./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.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-series2.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-series2.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-more-buffer-series2.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 14:39:21,529 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:39:21,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:39:21,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:39:21,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:39:21,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:39:21,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:39:21,586 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:39:21,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:39:21,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:39:21,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:39:21,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:39:21,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:39:21,588 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:39:21,589 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:39:21,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:39:21,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:39:21,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:39:21,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:39:21,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:39:21,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:39:21,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:39:21,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:39:21,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:39:21,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:39:21,592 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:39:21,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:39:21,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:39:21,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:39:21,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:39:21,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:39:21,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:39:21,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:39:21,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:39:21,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:39:21,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:39:21,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:39:21,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:39:21,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:39:21,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:39:21,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:39:21,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:39:21,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:39:21,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:39:21,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:39:21,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:39:21,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:39:21,775 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:39:21,775 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:39:21,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2024-02-07 14:39:22,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:39:23,044 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:39:23,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2024-02-07 14:39:23,058 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261a44cdf/b9fc8a3dd4724105806ccb05aa412c3c/FLAGa66fb373f [2024-02-07 14:39:23,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261a44cdf/b9fc8a3dd4724105806ccb05aa412c3c [2024-02-07 14:39:23,077 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:39:23,078 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:39:23,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/popl20-more-buffer-series2.wvr.yml/witness.yml [2024-02-07 14:39:23,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:39:23,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:39:23,171 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:39:23,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:39:23,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:39:23,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:39:23" (1/2) ... [2024-02-07 14:39:23,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f84b545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:39:23, skipping insertion in model container [2024-02-07 14:39:23,177 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:39:23" (1/2) ... [2024-02-07 14:39:23,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@104b7d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:39:23, skipping insertion in model container [2024-02-07 14:39:23,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:39:23" (2/2) ... [2024-02-07 14:39:23,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f84b545 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:39:23, skipping insertion in model container [2024-02-07 14:39:23,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:39:23" (2/2) ... [2024-02-07 14:39:23,180 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:39:23,227 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:39:23,228 INFO L76 edCorrectnessWitness]: Location invariant before [L54-L54] 0 <= i [2024-02-07 14:39:23,228 INFO L76 edCorrectnessWitness]: Location invariant before [L79-L79] 1 <= j [2024-02-07 14:39:23,228 INFO L76 edCorrectnessWitness]: Location invariant before [L58-L58] 1 <= i [2024-02-07 14:39:23,228 INFO L76 edCorrectnessWitness]: Location invariant before [L94-L94] (-2147483647 <= q1_back) && (q1_front <= 2147483646) [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L168-L168] (b <= -1) && (b != 0) [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L117-L117] 0 <= j [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L78-L78] (-2147483647 <= q2_back) && (0 <= j) [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] 0 <= j [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L74-L74] 0 <= j [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L60-L60] 0 <= i [2024-02-07 14:39:23,229 INFO L76 edCorrectnessWitness]: Location invariant before [L97-L97] -2147483647 <= q1_front [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant after [L108-L108] 0 <= j [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant before [L162-L162] ((((((((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 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant after [L49-L49] 0 <= i [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant before [L99-L99] 0 <= i [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant before [L49-L49] 0 <= i [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant before [L169-L169] (1 <= b) && (b != 0) [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant after [L90-L90] 0 <= i [2024-02-07 14:39:23,230 INFO L76 edCorrectnessWitness]: Location invariant before [L115-L115] -2147483647 <= q2_front [2024-02-07 14:39:23,231 INFO L76 edCorrectnessWitness]: Location invariant after [L69-L69] 0 <= j [2024-02-07 14:39:23,231 INFO L76 edCorrectnessWitness]: Location invariant before [L53-L53] 0 <= q1_back [2024-02-07 14:39:23,231 INFO L76 edCorrectnessWitness]: Location invariant before [L112-L112] (-2147483647 <= q2_back) && (q2_front <= 2147483646) [2024-02-07 14:39:23,231 INFO L76 edCorrectnessWitness]: Location invariant before [L73-L73] 0 <= q2_back [2024-02-07 14:39:23,231 INFO L76 edCorrectnessWitness]: Location invariant before [L75-L75] 0 <= j [2024-02-07 14:39:23,232 INFO L76 edCorrectnessWitness]: Location invariant before [L108-L108] 0 <= j [2024-02-07 14:39:23,232 INFO L76 edCorrectnessWitness]: Location invariant before [L81-L81] 0 <= j [2024-02-07 14:39:23,232 INFO L76 edCorrectnessWitness]: Location invariant before [L57-L57] (-2147483647 <= q1_back) && (0 <= i) [2024-02-07 14:39:23,232 INFO L76 edCorrectnessWitness]: Location invariant before [L90-L90] 0 <= i [2024-02-07 14:39:23,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:39:23,417 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-series2.wvr.c[4284,4297] [2024-02-07 14:39:23,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:39:23,433 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:39:23,445 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:39:23,446 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 [2024-02-07 14:39:23,498 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:39:23,498 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 [2024-02-07 14:39:23,502 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:39:23,502 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 14:39:23,505 WARN L423 MainDispatcher]: Unable to annotate _Bool with a witness entry [2024-02-07 14:39:23,505 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 14:39:23,512 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-series2.wvr.c[4284,4297] Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:39:23,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:39:23,538 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:39:23,546 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:39:23 WrapperNode [2024-02-07 14:39:23,547 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:39:23,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:39:23,548 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:39:23,548 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:39:23,553 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,573 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,610 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 384 [2024-02-07 14:39:23,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:39:23,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:39:23,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:39:23,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:39:23,627 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,628 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,642 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,665 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 14:39:23,671 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,672 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,684 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,693 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,710 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,711 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:39:23,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:39:23,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:39:23,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:39:23,716 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 02:39:23" (1/1) ... [2024-02-07 14:39:23,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:39:23,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:39:23,746 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 14:39:23,773 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 14:39:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:39:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:39:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:39:23,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:39:23,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:39:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:39:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-07 14:39:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:39:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:39:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:39:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:39:23,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-07 14:39:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-07 14:39:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:39:23,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-07 14:39:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:39:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:39:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-07 14:39:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:39:23,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:39:23,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:39:23,805 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 14:39:23,966 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:39:23,968 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:39:24,435 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:39:24,436 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:39:24,761 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:39:24,761 INFO L320 CfgBuilder]: Removed 7 assume(true) statements. [2024-02-07 14:39:24,762 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:39:24 BoogieIcfgContainer [2024-02-07 14:39:24,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:39:24,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:39:24,763 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:39:24,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:39:24,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:39:23" (1/4) ... [2024-02-07 14:39:24,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a492afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:39:24, skipping insertion in model container [2024-02-07 14:39:24,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:39:23" (2/4) ... [2024-02-07 14:39:24,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a492afb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:39:24, skipping insertion in model container [2024-02-07 14:39:24,767 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 02:39:23" (3/4) ... [2024-02-07 14:39:24,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a492afb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:39:24, skipping insertion in model container [2024-02-07 14:39:24,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:39:24" (4/4) ... [2024-02-07 14:39:24,768 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2024-02-07 14:39:24,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:39:24,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-02-07 14:39:24,783 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:39:24,877 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-07 14:39:24,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 80 transitions, 188 flow [2024-02-07 14:39:24,939 INFO L124 PetriNetUnfolderBase]: 7/76 cut-off events. [2024-02-07 14:39:24,939 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:39:24,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 76 events. 7/76 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 200 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-02-07 14:39:24,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 80 transitions, 188 flow [2024-02-07 14:39:24,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 75 transitions, 174 flow [2024-02-07 14:39:24,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:39:24,967 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;@18285161, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:39:24,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-02-07 14:39:24,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:39:24,971 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-02-07 14:39:24,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:39:24,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:39:24,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:39:24,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-07 14:39:24,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:39:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1132768, now seen corresponding path program 1 times [2024-02-07 14:39:24,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:39:24,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288889876] [2024-02-07 14:39:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:24,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:39:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:39:25,272 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 14:39:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:39:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288889876] [2024-02-07 14:39:25,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288889876] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:39:25,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:39:25,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:39:25,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150985158] [2024-02-07 14:39:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:39:25,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:39:25,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:39:25,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:39:25,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:39:25,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 80 [2024-02-07 14:39:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 174 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 14:39:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:39:25,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 80 [2024-02-07 14:39:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:39:27,017 INFO L124 PetriNetUnfolderBase]: 12912/17470 cut-off events. [2024-02-07 14:39:27,017 INFO L125 PetriNetUnfolderBase]: For 402/402 co-relation queries the response was YES. [2024-02-07 14:39:27,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34666 conditions, 17470 events. 12912/17470 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 114498 event pairs, 9244 based on Foata normal form. 0/9542 useless extension candidates. Maximal degree in co-relation 31291. Up to 16376 conditions per place. [2024-02-07 14:39:27,130 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 45 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-02-07 14:39:27,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 264 flow [2024-02-07 14:39:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:39:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:39:27,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-02-07 14:39:27,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-02-07 14:39:27,140 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 174 flow. Second operand 3 states and 124 transitions. [2024-02-07 14:39:27,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 264 flow [2024-02-07 14:39:27,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 248 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-07 14:39:27,190 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 190 flow [2024-02-07 14:39:27,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-02-07 14:39:27,194 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -15 predicate places. [2024-02-07 14:39:27,194 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 190 flow [2024-02-07 14:39:27,194 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 14:39:27,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:39:27,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-02-07 14:39:27,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:39:27,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-07 14:39:27,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:39:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1088627276, now seen corresponding path program 1 times [2024-02-07 14:39:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:39:27,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813275471] [2024-02-07 14:39:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:39:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:39:27,275 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 14:39:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:39:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813275471] [2024-02-07 14:39:27,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813275471] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:39:27,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37384594] [2024-02-07 14:39:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:39:27,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:39:27,278 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 14:39:27,293 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 14:39:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:39:27,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-07 14:39:27,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:39:27,382 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 14:39:27,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:39:27,391 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 14:39:27,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37384594] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:39:27,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:39:27,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-02-07 14:39:27,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668427435] [2024-02-07 14:39:27,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:39:27,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:39:27,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:39:27,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:39:27,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:39:27,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 80 [2024-02-07 14:39:27,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 190 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 14:39:27,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:39:27,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 80 [2024-02-07 14:39:27,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:39:28,748 INFO L124 PetriNetUnfolderBase]: 12915/17479 cut-off events. [2024-02-07 14:39:28,749 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-02-07 14:39:28,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34202 conditions, 17479 events. 12915/17479 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 114422 event pairs, 9244 based on Foata normal form. 0/9551 useless extension candidates. Maximal degree in co-relation 34114. Up to 16377 conditions per place. [2024-02-07 14:39:28,827 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 45 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-02-07 14:39:28,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 334 flow [2024-02-07 14:39:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:39:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:39:28,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-02-07 14:39:28,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-02-07 14:39:28,829 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 190 flow. Second operand 4 states and 141 transitions. [2024-02-07 14:39:28,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 334 flow [2024-02-07 14:39:28,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:39:28,831 INFO L231 Difference]: Finished difference. Result has 68 places, 74 transitions, 249 flow [2024-02-07 14:39:28,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=68, PETRI_TRANSITIONS=74} [2024-02-07 14:39:28,832 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -13 predicate places. [2024-02-07 14:39:28,832 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 74 transitions, 249 flow [2024-02-07 14:39:28,833 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 14:39:28,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:39:28,833 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1] [2024-02-07 14:39:28,850 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 14:39:29,048 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 14:39:29,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-07 14:39:29,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:39:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1801170760, now seen corresponding path program 2 times [2024-02-07 14:39:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:39:29,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248399145] [2024-02-07 14:39:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:29,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:39:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:39:29,131 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 14:39:29,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:39:29,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248399145] [2024-02-07 14:39:29,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248399145] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:39:29,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517797265] [2024-02-07 14:39:29,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-07 14:39:29,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:39:29,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:39:29,149 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 14:39:29,179 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 14:39:29,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-07 14:39:29,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:39:29,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-07 14:39:29,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:39:29,240 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 14:39:29,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:39:29,247 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 14:39:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517797265] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:39:29,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:39:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 14:39:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862494786] [2024-02-07 14:39:29,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:39:29,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:39:29,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:39:29,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:39:29,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:39:29,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 80 [2024-02-07 14:39:29,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 74 transitions, 249 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 14:39:29,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:39:29,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 80 [2024-02-07 14:39:29,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:39:30,405 INFO L124 PetriNetUnfolderBase]: 12918/17488 cut-off events. [2024-02-07 14:39:30,406 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-02-07 14:39:30,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34247 conditions, 17488 events. 12918/17488 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 114434 event pairs, 9244 based on Foata normal form. 0/9560 useless extension candidates. Maximal degree in co-relation 34131. Up to 16378 conditions per place. [2024-02-07 14:39:30,500 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 45 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-02-07 14:39:30,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 413 flow [2024-02-07 14:39:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:39:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:39:30,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-02-07 14:39:30,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175 [2024-02-07 14:39:30,502 INFO L175 Difference]: Start difference. First operand has 68 places, 74 transitions, 249 flow. Second operand 5 states and 167 transitions. [2024-02-07 14:39:30,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 413 flow [2024-02-07 14:39:30,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 394 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-07 14:39:30,514 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 327 flow [2024-02-07 14:39:30,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2024-02-07 14:39:30,516 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-02-07 14:39:30,516 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 327 flow [2024-02-07 14:39:30,516 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 14:39:30,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:39:30,516 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1] [2024-02-07 14:39:30,530 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 14:39:30,728 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 14:39:30,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-07 14:39:30,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:39:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash -53242844, now seen corresponding path program 3 times [2024-02-07 14:39:30,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:39:30,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208256569] [2024-02-07 14:39:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:39:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:39:30,834 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 14:39:30,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:39:30,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208256569] [2024-02-07 14:39:30,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208256569] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 14:39:30,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992981206] [2024-02-07 14:39:30,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-07 14:39:30,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 14:39:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:39:30,853 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 14:39:30,881 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 14:39:30,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-07 14:39:30,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-07 14:39:30,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-07 14:39:30,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 14:39:31,219 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 14:39:31,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 14:39:31,326 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 14:39:31,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992981206] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 14:39:31,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 14:39:31,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-02-07 14:39:31,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641409991] [2024-02-07 14:39:31,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 14:39:31,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-07 14:39:31,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:39:31,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-07 14:39:31,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-07 14:39:31,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 80 [2024-02-07 14:39:31,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 327 flow. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 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 14:39:31,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:39:31,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 80 [2024-02-07 14:39:31,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:39:32,654 INFO L124 PetriNetUnfolderBase]: 12924/17504 cut-off events. [2024-02-07 14:39:32,654 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-02-07 14:39:32,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34340 conditions, 17504 events. 12924/17504 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 1466. Compared 114363 event pairs, 9244 based on Foata normal form. 0/9577 useless extension candidates. Maximal degree in co-relation 34171. Up to 16379 conditions per place. [2024-02-07 14:39:32,723 INFO L140 encePairwiseOnDemand]: 69/80 looper letters, 59 selfloop transitions, 33 changer transitions 0/105 dead transitions. [2024-02-07 14:39:32,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 617 flow [2024-02-07 14:39:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-07 14:39:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-07 14:39:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 319 transitions. [2024-02-07 14:39:32,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30673076923076925 [2024-02-07 14:39:32,736 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 327 flow. Second operand 13 states and 319 transitions. [2024-02-07 14:39:32,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 617 flow [2024-02-07 14:39:32,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 563 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-07 14:39:32,740 INFO L231 Difference]: Finished difference. Result has 83 places, 91 transitions, 448 flow [2024-02-07 14:39:32,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=448, PETRI_PLACES=83, PETRI_TRANSITIONS=91} [2024-02-07 14:39:32,741 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 2 predicate places. [2024-02-07 14:39:32,741 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 91 transitions, 448 flow [2024-02-07 14:39:32,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 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 14:39:32,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:39:32,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:39:32,757 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 14:39:32,953 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 14:39:32,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-07 14:39:32,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:39:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1834673551, now seen corresponding path program 1 times [2024-02-07 14:39:32,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:39:32,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109619111] [2024-02-07 14:39:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:32,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:39:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:39:33,136 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 14:39:33,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:39:33,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109619111] [2024-02-07 14:39:33,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109619111] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:39:33,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:39:33,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 14:39:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782244446] [2024-02-07 14:39:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:39:33,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:39:33,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:39:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:39:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:39:33,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 80 [2024-02-07 14:39:33,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 91 transitions, 448 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 14:39:33,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:39:33,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 80 [2024-02-07 14:39:33,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:39:35,613 INFO L124 PetriNetUnfolderBase]: 25466/34078 cut-off events. [2024-02-07 14:39:35,613 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-02-07 14:39:35,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68130 conditions, 34078 events. 25466/34078 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 2840. Compared 237906 event pairs, 7567 based on Foata normal form. 0/19423 useless extension candidates. Maximal degree in co-relation 68057. Up to 15528 conditions per place. [2024-02-07 14:39:35,786 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 151 selfloop transitions, 11 changer transitions 0/177 dead transitions. [2024-02-07 14:39:35,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 177 transitions, 962 flow [2024-02-07 14:39:35,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:39:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:39:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2024-02-07 14:39:35,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-02-07 14:39:35,788 INFO L175 Difference]: Start difference. First operand has 83 places, 91 transitions, 448 flow. Second operand 6 states and 245 transitions. [2024-02-07 14:39:35,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 177 transitions, 962 flow [2024-02-07 14:39:35,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 177 transitions, 881 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-02-07 14:39:35,791 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 413 flow [2024-02-07 14:39:35,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=413, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2024-02-07 14:39:35,792 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-02-07 14:39:35,793 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 413 flow [2024-02-07 14:39:35,793 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 14:39:35,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:39:35,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:39:35,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:39:35,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 47 more)] === [2024-02-07 14:39:35,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:39:35,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1928482616, now seen corresponding path program 1 times [2024-02-07 14:39:35,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:39:35,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658934100] [2024-02-07 14:39:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:39:35,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:39:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:39:35,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:39:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:39:35,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:39:35,865 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:39:35,865 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 50 remaining) [2024-02-07 14:39:35,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 50 remaining) [2024-02-07 14:39:35,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 50 remaining) [2024-02-07 14:39:35,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 50 remaining) [2024-02-07 14:39:35,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 50 remaining) [2024-02-07 14:39:35,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 50 remaining) [2024-02-07 14:39:35,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 50 remaining) [2024-02-07 14:39:35,870 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 50 remaining) [2024-02-07 14:39:35,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 50 remaining) [2024-02-07 14:39:35,871 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (29 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 50 remaining) [2024-02-07 14:39:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 50 remaining) [2024-02-07 14:39:35,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 50 remaining) [2024-02-07 14:39:35,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 50 remaining) [2024-02-07 14:39:35,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 50 remaining) [2024-02-07 14:39:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 50 remaining) [2024-02-07 14:39:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 50 remaining) [2024-02-07 14:39:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 50 remaining) [2024-02-07 14:39:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 50 remaining) [2024-02-07 14:39:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 50 remaining) [2024-02-07 14:39:35,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 50 remaining) [2024-02-07 14:39:35,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 50 remaining) [2024-02-07 14:39:35,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 50 remaining) [2024-02-07 14:39:35,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 50 remaining) [2024-02-07 14:39:35,878 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread4Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 50 remaining) [2024-02-07 14:39:35,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:39:35,878 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2024-02-07 14:39:35,891 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:39:35,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:39:35,918 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:39:35,919 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:39:35,921 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-02-07 14:39:35,929 INFO L503 ceAbstractionStarter]: Automizer considered 24 witness invariants [2024-02-07 14:39:35,932 INFO L504 ceAbstractionStarter]: WitnessConsidered=24 [2024-02-07 14:39:35,933 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:39:35 BasicIcfg [2024-02-07 14:39:35,933 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:39:35,933 INFO L158 Benchmark]: Toolchain (without parser) took 12764.51ms. Allocated memory was 180.4MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 105.6MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 557.5MB. Max. memory is 16.1GB. [2024-02-07 14:39:35,933 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:39:35,934 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:39:35,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.12ms. Allocated memory is still 180.4MB. Free memory was 105.3MB in the beginning and 134.9MB in the end (delta: -29.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2024-02-07 14:39:35,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.02ms. Allocated memory is still 180.4MB. Free memory was 134.9MB in the beginning and 131.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:39:35,935 INFO L158 Benchmark]: Boogie Preprocessor took 96.02ms. Allocated memory is still 180.4MB. Free memory was 131.5MB in the beginning and 127.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:39:35,936 INFO L158 Benchmark]: RCFGBuilder took 1047.39ms. Allocated memory is still 180.4MB. Free memory was 127.4MB in the beginning and 79.2MB in the end (delta: 48.2MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. [2024-02-07 14:39:35,936 INFO L158 Benchmark]: TraceAbstraction took 11169.54ms. Allocated memory was 180.4MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 78.1MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 528.0MB. Max. memory is 16.1GB. [2024-02-07 14:39:35,939 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 140.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 180.4MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.12ms. Allocated memory is still 180.4MB. Free memory was 105.3MB in the beginning and 134.9MB in the end (delta: -29.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.02ms. Allocated memory is still 180.4MB. Free memory was 134.9MB in the beginning and 131.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.02ms. Allocated memory is still 180.4MB. Free memory was 131.5MB in the beginning and 127.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1047.39ms. Allocated memory is still 180.4MB. Free memory was 127.4MB in the beginning and 79.2MB in the end (delta: 48.2MB). Peak memory consumption was 82.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11169.54ms. Allocated memory was 180.4MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 78.1MB in the beginning and 4.9GB in the end (delta: -4.8GB). Peak memory consumption was 528.0MB. 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; [L125] 0 pthread_t t1, t2, t3, t4; [L127] 0 N = __VERIFIER_nondet_int() [L128] 0 n1 = __VERIFIER_nondet_int() [L129] 0 n2 = __VERIFIER_nondet_int() [L130] 0 q1_front = __VERIFIER_nondet_int() [L131] 0 q1_back = q1_front [L132] 0 q2_front = __VERIFIER_nondet_int() [L133] 0 q2_back = q2_front [L134] CALL, EXPR 0 create_fresh_int_array(n1) [L157] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L157] RET 0 assume_abort_if_not(size >= 0) [L158] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L158] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L160] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L161] 0 int i = 0; VAL [N=1, \old(size)=0, arr={-2:0}, 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=0, q2_front=0, size=0, total=0] [L161] COND FALSE 0 !(i < size) [L164] 0 return arr; [L134] RET, EXPR 0 create_fresh_int_array(n1) [L134] 0 q1 = create_fresh_int_array(n1) [L135] CALL, EXPR 0 create_fresh_int_array(n2) [L157] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L157] RET 0 assume_abort_if_not(size >= 0) [L158] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L158] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L160] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L161] 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={-2:0}, q1_back=-1, q1_front=-1, q2={0:0}, q2_back=0, q2_front=0, size=0, total=0] [L161] COND FALSE 0 !(i < size) [L164] 0 return arr; [L135] RET, EXPR 0 create_fresh_int_array(n2) [L135] 0 q2 = create_fresh_int_array(n2) [L136] CALL, EXPR 0 create_fresh_int_array(N) [L157] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L157] RET 0 assume_abort_if_not(size >= 0) [L158] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L158] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L160] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L161] 0 int i = 0; VAL [N=1, \old(size)=1, arr={-4:0}, f={0:0}, i=0, i=0, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, size=1, total=0] [L161] COND TRUE 0 i < size VAL [N=1, \old(size)=1, arr={-4:0}, f={0:0}, i=0, i=0, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, size=1, total=0] [L162] 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]]]]]] [L162] 0 arr[i] = __VERIFIER_nondet_int() [L161] 0 i++ VAL [N=1, \old(size)=1, arr={-4:0}, f={0:0}, i=0, i=1, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, size=1, total=0] [L161] COND FALSE 0 !(i < size) [L164] 0 return arr; [L136] RET, EXPR 0 create_fresh_int_array(N) [L136] 0 f = create_fresh_int_array(N) [L138] CALL 0 assume_abort_if_not(N >= 0) [L38] COND FALSE 0 !(!cond) [L138] RET 0 assume_abort_if_not(N >= 0) [L141] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [N=1, f={-4:0}, i=0, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, 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={-4:0}, i=0, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, total=0] [L51] COND TRUE 1 \read(cond) VAL [N=1, _argptr={0:0}, _argptr={0:0}, cond=1, f={-4:0}, i=0, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, 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={-4:0}, i=0, j=0, n1=0, n2=0, q1={-2:0}, q1_back=-1, q1_front=-1, q2={-3:0}, q2_back=0, q2_front=0, 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: 58]: 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: 73]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 74]: 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: 78]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 81]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 94]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 168]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 99]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 162]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 162]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 162]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 151]: 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: 143]: 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: 142]: 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: 144]: 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: 141]: 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: 112]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 168]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 169]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 117]: 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, 123 locations, 50 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: 11.0s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 212 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1382 IncrementalHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 14 mSDtfsCounter, 1382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=448occurred in iteration=4, InterpolantAutomatonStates: 31, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 65 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 255 SizeOfPredicates, 4 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 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 14:39:35,963 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