./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-symm.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/chl-simpl-str-symm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-symm.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-a340643-m [2024-01-27 14:50:51,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:50:51,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:50:51,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:50:51,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:50:51,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:50:51,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:50:51,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:50:51,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:50:51,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:50:51,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:50:51,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:50:51,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:50:51,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:50:51,836 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:50:51,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:50:51,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:50:51,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:50:51,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:50:51,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:50:51,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:50:51,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:50:51,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:50:51,841 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:50:51,841 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:50:51,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:50:51,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:50:51,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:50:51,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:50:51,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:50:51,843 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:50:51,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:50:51,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:50:51,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:50:51,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:50:51,844 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:50:51,844 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:50:51,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:50:51,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:50:51,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:50:51,845 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:50:51,845 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:50:51,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:50:51,845 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:50:52,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:50:52,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:50:52,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:50:52,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:50:52,111 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:50:52,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2024-01-27 14:50:53,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:50:53,259 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:50:53,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2024-01-27 14:50:53,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665079b63/426600540d7d4c90999b7cffa900bd7e/FLAG394879270 [2024-01-27 14:50:53,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665079b63/426600540d7d4c90999b7cffa900bd7e [2024-01-27 14:50:53,277 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:50:53,277 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:50:53,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-symm.wvr.yml/witness.yml [2024-01-27 14:50:53,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:50:53,360 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:50:53,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:50:53,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:50:53,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:50:53,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:50:53" (1/2) ... [2024-01-27 14:50:53,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7715158b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:50:53, skipping insertion in model container [2024-01-27 14:50:53,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:50:53" (1/2) ... [2024-01-27 14:50:53,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2915a347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:50:53, skipping insertion in model container [2024-01-27 14:50:53,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:53" (2/2) ... [2024-01-27 14:50:53,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7715158b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53, skipping insertion in model container [2024-01-27 14:50:53,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:53" (2/2) ... [2024-01-27 14:50:53,371 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:50:53,389 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:50:53,391 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] result_5 == 0 [2024-01-27 14:50:53,391 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] length_0 == 0 [2024-01-27 14:50:53,391 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] to_int_3 == 0 [2024-01-27 14:50:53,391 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] to_int_1 == 0 [2024-01-27 14:50:53,391 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] result_4 == 0 [2024-01-27 14:50:53,392 INFO L98 nessWitnessExtractor]: Location invariant before [L58-L58] length_2 == 0 [2024-01-27 14:50:53,392 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] result_5 == 0 [2024-01-27 14:50:53,392 INFO L98 nessWitnessExtractor]: Location invariant before [L64-L64] result_4 == 0 [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] result_5 == 0 [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] to_int_3 == 0 [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L61-L61] result_4 == 0 [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] result_4 == 0 [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] to_int_3 == 0 [2024-01-27 14:50:53,393 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] result_5 == 0 [2024-01-27 14:50:53,394 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] to_int_1 == 0 [2024-01-27 14:50:53,394 INFO L98 nessWitnessExtractor]: Location invariant before [L59-L59] length_2 == 0 [2024-01-27 14:50:53,394 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] b != 0 [2024-01-27 14:50:53,394 INFO L98 nessWitnessExtractor]: Location invariant before [L78-L78] 1 <= b [2024-01-27 14:50:53,394 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] result_5 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] to_int_3 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] length_2 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L60-L60] result_4 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] result_4 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] to_int_3 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L22-L25] result_5 == 0 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] b <= -1 [2024-01-27 14:50:53,395 INFO L98 nessWitnessExtractor]: Location invariant before [L79-L79] b != 0 [2024-01-27 14:50:53,413 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:50:53,606 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/chl-simpl-str-symm.wvr.c[2329,2342] [2024-01-27 14:50:53,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:50:53,625 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 14:50:53,636 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:50:53,687 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/chl-simpl-str-symm.wvr.c[2329,2342] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:50:53,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:50:53,700 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:50:53,701 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53 WrapperNode [2024-01-27 14:50:53,701 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:50:53,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:50:53,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:50:53,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:50:53,708 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 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,720 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 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,744 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 157 [2024-01-27 14:50:53,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:50:53,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:50:53,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:50:53,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:50:53,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,772 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-27 14:50:53,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,783 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:50:53,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:50:53,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:50:53,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:50:53,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (1/1) ... [2024-01-27 14:50:53,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:50:53,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:50:53,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 14:50:53,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 14:50:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:50:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 14:50:53,872 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 14:50:53,872 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 14:50:53,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 14:50:53,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 14:50:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:50:53,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:50:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 14:50:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 14:50:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 14:50:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:50:53,877 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:50:53,955 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:50:53,956 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:50:54,164 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:50:54,164 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:50:54,283 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:50:54,289 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 14:50:54,290 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:50:54 BoogieIcfgContainer [2024-01-27 14:50:54,291 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:50:54,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:50:54,293 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:50:54,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:50:54,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:50:53" (1/4) ... [2024-01-27 14:50:54,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74142b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:50:54, skipping insertion in model container [2024-01-27 14:50:54,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:50:53" (2/4) ... [2024-01-27 14:50:54,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74142b6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:50:54, skipping insertion in model container [2024-01-27 14:50:54,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:50:53" (3/4) ... [2024-01-27 14:50:54,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74142b6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:50:54, skipping insertion in model container [2024-01-27 14:50:54,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:50:54" (4/4) ... [2024-01-27 14:50:54,298 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2024-01-27 14:50:54,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:50:54,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-27 14:50:54,311 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:50:54,375 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 14:50:54,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 188 flow [2024-01-27 14:50:54,451 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2024-01-27 14:50:54,452 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:50:54,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 4/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2024-01-27 14:50:54,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 87 transitions, 188 flow [2024-01-27 14:50:54,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 84 transitions, 180 flow [2024-01-27 14:50:54,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:50:54,487 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;@7e0d0a1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:50:54,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-01-27 14:50:54,490 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:50:54,490 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-27 14:50:54,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:50:54,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:54,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-27 14:50:54,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:54,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 15551, now seen corresponding path program 1 times [2024-01-27 14:50:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414957529] [2024-01-27 14:50:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:54,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414957529] [2024-01-27 14:50:54,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414957529] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:54,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:54,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:54,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068160821] [2024-01-27 14:50:54,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:54,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:54,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 87 [2024-01-27 14:50:54,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:54,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:54,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 87 [2024-01-27 14:50:54,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:55,000 INFO L124 PetriNetUnfolderBase]: 303/736 cut-off events. [2024-01-27 14:50:55,000 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-01-27 14:50:55,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 736 events. 303/736 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4385 event pairs, 144 based on Foata normal form. 0/633 useless extension candidates. Maximal degree in co-relation 1106. Up to 292 conditions per place. [2024-01-27 14:50:55,010 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 48 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2024-01-27 14:50:55,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 327 flow [2024-01-27 14:50:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:55,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-01-27 14:50:55,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8045977011494253 [2024-01-27 14:50:55,024 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 180 flow. Second operand 3 states and 210 transitions. [2024-01-27 14:50:55,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 327 flow [2024-01-27 14:50:55,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 101 transitions, 313 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 14:50:55,034 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 194 flow [2024-01-27 14:50:55,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-01-27 14:50:55,039 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -3 predicate places. [2024-01-27 14:50:55,039 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 194 flow [2024-01-27 14:50:55,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:55,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-01-27 14:50:55,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 14:50:55,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:55,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash 482576, now seen corresponding path program 1 times [2024-01-27 14:50:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:55,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273925359] [2024-01-27 14:50:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:55,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:55,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:55,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273925359] [2024-01-27 14:50:55,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273925359] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:55,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:55,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:55,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149586681] [2024-01-27 14:50:55,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:55,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:55,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:55,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:55,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:55,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 87 [2024-01-27 14:50:55,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:55,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 87 [2024-01-27 14:50:55,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:55,182 INFO L124 PetriNetUnfolderBase]: 291/664 cut-off events. [2024-01-27 14:50:55,182 INFO L125 PetriNetUnfolderBase]: For 131/134 co-relation queries the response was YES. [2024-01-27 14:50:55,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1295 conditions, 664 events. 291/664 cut-off events. For 131/134 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3932 event pairs, 124 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 669. Up to 279 conditions per place. [2024-01-27 14:50:55,186 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 43 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-27 14:50:55,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 89 transitions, 303 flow [2024-01-27 14:50:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-01-27 14:50:55,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7432950191570882 [2024-01-27 14:50:55,192 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 194 flow. Second operand 3 states and 194 transitions. [2024-01-27 14:50:55,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 89 transitions, 303 flow [2024-01-27 14:50:55,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:55,196 INFO L231 Difference]: Finished difference. Result has 79 places, 78 transitions, 180 flow [2024-01-27 14:50:55,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=79, PETRI_TRANSITIONS=78} [2024-01-27 14:50:55,197 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -8 predicate places. [2024-01-27 14:50:55,197 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 78 transitions, 180 flow [2024-01-27 14:50:55,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:55,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:50:55,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 14:50:55,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:55,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 14960313, now seen corresponding path program 1 times [2024-01-27 14:50:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087353378] [2024-01-27 14:50:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:55,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087353378] [2024-01-27 14:50:55,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087353378] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:55,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:55,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987390688] [2024-01-27 14:50:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:55,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:55,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:55,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 87 [2024-01-27 14:50:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:55,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 87 [2024-01-27 14:50:55,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:55,313 INFO L124 PetriNetUnfolderBase]: 295/673 cut-off events. [2024-01-27 14:50:55,314 INFO L125 PetriNetUnfolderBase]: For 90/93 co-relation queries the response was YES. [2024-01-27 14:50:55,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 673 events. 295/673 cut-off events. For 90/93 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3960 event pairs, 226 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 731. Up to 508 conditions per place. [2024-01-27 14:50:55,317 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 30 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-01-27 14:50:55,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 240 flow [2024-01-27 14:50:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-01-27 14:50:55,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7432950191570882 [2024-01-27 14:50:55,321 INFO L175 Difference]: Start difference. First operand has 79 places, 78 transitions, 180 flow. Second operand 3 states and 194 transitions. [2024-01-27 14:50:55,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 240 flow [2024-01-27 14:50:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 76 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:55,325 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 176 flow [2024-01-27 14:50:55,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-01-27 14:50:55,326 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -10 predicate places. [2024-01-27 14:50:55,327 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 176 flow [2024-01-27 14:50:55,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:55,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 14:50:55,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 14:50:55,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:55,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:55,328 INFO L85 PathProgramCache]: Analyzing trace with hash 463770167, now seen corresponding path program 1 times [2024-01-27 14:50:55,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:55,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424901611] [2024-01-27 14:50:55,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:55,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:55,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:55,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424901611] [2024-01-27 14:50:55,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424901611] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:55,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:55,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827941506] [2024-01-27 14:50:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:55,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 87 [2024-01-27 14:50:55,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:55,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 87 [2024-01-27 14:50:55,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:55,492 INFO L124 PetriNetUnfolderBase]: 295/669 cut-off events. [2024-01-27 14:50:55,493 INFO L125 PetriNetUnfolderBase]: For 51/54 co-relation queries the response was YES. [2024-01-27 14:50:55,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 669 events. 295/669 cut-off events. For 51/54 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3979 event pairs, 226 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 1241. Up to 506 conditions per place. [2024-01-27 14:50:55,496 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 32 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-01-27 14:50:55,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 236 flow [2024-01-27 14:50:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-01-27 14:50:55,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2024-01-27 14:50:55,498 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 176 flow. Second operand 3 states and 186 transitions. [2024-01-27 14:50:55,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 236 flow [2024-01-27 14:50:55,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:55,500 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 168 flow [2024-01-27 14:50:55,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-01-27 14:50:55,500 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -14 predicate places. [2024-01-27 14:50:55,501 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 168 flow [2024-01-27 14:50:55,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:55,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 14:50:55,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 14:50:55,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:55,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1491973789, now seen corresponding path program 1 times [2024-01-27 14:50:55,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:55,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166393262] [2024-01-27 14:50:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:55,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:55,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:55,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166393262] [2024-01-27 14:50:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166393262] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:55,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362100832] [2024-01-27 14:50:55,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:55,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 87 [2024-01-27 14:50:55,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:55,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 87 [2024-01-27 14:50:55,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:55,638 INFO L124 PetriNetUnfolderBase]: 428/1013 cut-off events. [2024-01-27 14:50:55,638 INFO L125 PetriNetUnfolderBase]: For 65/78 co-relation queries the response was YES. [2024-01-27 14:50:55,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 1013 events. 428/1013 cut-off events. For 65/78 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6380 event pairs, 243 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 1857. Up to 474 conditions per place. [2024-01-27 14:50:55,643 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 48 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2024-01-27 14:50:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 91 transitions, 319 flow [2024-01-27 14:50:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2024-01-27 14:50:55,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8352490421455939 [2024-01-27 14:50:55,645 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 168 flow. Second operand 3 states and 218 transitions. [2024-01-27 14:50:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 91 transitions, 319 flow [2024-01-27 14:50:55,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 91 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:55,647 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 190 flow [2024-01-27 14:50:55,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-01-27 14:50:55,647 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -13 predicate places. [2024-01-27 14:50:55,648 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 190 flow [2024-01-27 14:50:55,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:55,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:50:55,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 14:50:55,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:55,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash -993452307, now seen corresponding path program 1 times [2024-01-27 14:50:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864540759] [2024-01-27 14:50:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:50:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:50:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 14:50:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864540759] [2024-01-27 14:50:55,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864540759] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:50:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:50:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:50:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655251640] [2024-01-27 14:50:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:50:55,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:50:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 14:50:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:50:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:50:55,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 87 [2024-01-27 14:50:55,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:50:55,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 87 [2024-01-27 14:50:55,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:50:55,786 INFO L124 PetriNetUnfolderBase]: 421/941 cut-off events. [2024-01-27 14:50:55,786 INFO L125 PetriNetUnfolderBase]: For 288/310 co-relation queries the response was YES. [2024-01-27 14:50:55,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 941 events. 421/941 cut-off events. For 288/310 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5795 event pairs, 211 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 1142. Up to 456 conditions per place. [2024-01-27 14:50:55,790 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 43 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2024-01-27 14:50:55,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 307 flow [2024-01-27 14:50:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:50:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:50:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2024-01-27 14:50:55,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2024-01-27 14:50:55,792 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 190 flow. Second operand 3 states and 200 transitions. [2024-01-27 14:50:55,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 307 flow [2024-01-27 14:50:55,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:50:55,793 INFO L231 Difference]: Finished difference. Result has 69 places, 68 transitions, 176 flow [2024-01-27 14:50:55,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=69, PETRI_TRANSITIONS=68} [2024-01-27 14:50:55,794 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -18 predicate places. [2024-01-27 14:50:55,794 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 68 transitions, 176 flow [2024-01-27 14:50:55,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 14:50:55,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:50:55,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:50:55,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 14:50:55,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 40 more)] === [2024-01-27 14:50:55,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:50:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash -503135134, now seen corresponding path program 1 times [2024-01-27 14:50:55,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 14:50:55,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299270025] [2024-01-27 14:50:55,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:50:55,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 14:50:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:50:55,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 14:50:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:50:55,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 14:50:55,830 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 14:50:55,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 43 remaining) [2024-01-27 14:50:55,832 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 43 remaining) [2024-01-27 14:50:55,833 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 43 remaining) [2024-01-27 14:50:55,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION (11 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 43 remaining) [2024-01-27 14:50:55,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 43 remaining) [2024-01-27 14:50:55,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 43 remaining) [2024-01-27 14:50:55,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 43 remaining) [2024-01-27 14:50:55,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 43 remaining) [2024-01-27 14:50:55,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 43 remaining) [2024-01-27 14:50:55,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 14:50:55,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:50:55,841 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 14:50:55,841 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:50:55,863 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-01-27 14:50:55,863 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-01-27 14:50:55,863 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:50:55 BasicIcfg [2024-01-27 14:50:55,864 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:50:55,864 INFO L158 Benchmark]: Toolchain (without parser) took 2503.58ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 73.4MB in the beginning and 129.3MB in the end (delta: -55.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:50:55,864 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:50:55,864 INFO L158 Benchmark]: Witness Parser took 1.95ms. Allocated memory is still 151.0MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:50:55,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.11ms. Allocated memory is still 151.0MB. Free memory was 73.1MB in the beginning and 115.8MB in the end (delta: -42.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-01-27 14:50:55,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.25ms. Allocated memory is still 151.0MB. Free memory was 115.8MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:50:55,865 INFO L158 Benchmark]: Boogie Preprocessor took 37.44ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 111.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:50:55,865 INFO L158 Benchmark]: RCFGBuilder took 507.45ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 84.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-27 14:50:55,866 INFO L158 Benchmark]: TraceAbstraction took 1570.93ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 84.4MB in the beginning and 129.3MB in the end (delta: -44.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2024-01-27 14:50:55,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 1.95ms. Allocated memory is still 151.0MB. Free memory is still 76.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.11ms. Allocated memory is still 151.0MB. Free memory was 73.1MB in the beginning and 115.8MB in the end (delta: -42.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.25ms. Allocated memory is still 151.0MB. Free memory was 115.8MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.44ms. Allocated memory is still 151.0MB. Free memory was 113.7MB in the beginning and 111.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.45ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 84.9MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1570.93ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 84.4MB in the beginning and 129.3MB in the end (delta: -44.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 78]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 int length_0, to_int_1, length_2, to_int_3, result_4, result_5; [L55] 0 pthread_t t1, t2; VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]]] VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]]] VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]]]] VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]]] VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[length_0],IntegerLiteral[0]]]] VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]] [L58] 0 length_0 = __VERIFIER_nondet_int() [L59] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L59] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L59] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L59] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L59] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]]] [L59] 0 to_int_1 = __VERIFIER_nondet_int() [L60] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L60] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L60] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]]] VAL [length_0=1, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L60] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]] [L60] 0 length_2 = __VERIFIER_nondet_int() [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]]] VAL [length_0=1, length_2=1, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]]] VAL [length_0=1, length_2=1, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]] [L61] 0 to_int_3 = __VERIFIER_nondet_int() [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]]] VAL [length_0=1, length_2=1, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]] [L64] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [length_0=1, length_2=1, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L43] 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : minus(to_int_1, to_int_3)) VAL [_argptr={0:0}, _argptr={0:0}, length_0=1, length_2=1, result_4=0, result_5=0, to_int_1=0, to_int_3=0] [L43] 1 length_2 == 0 ? -1 : minus(to_int_1, to_int_3) [L43] CALL 1 minus(to_int_1, to_int_3) [L78] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[b]]]] VAL [\old(a)=0, \old(b)=0, a=0, b=0, length_0=1, length_2=1, result_4=0, result_5=0, to_int_1=0, to_int_3=0] - UnprovableResult [Line: 45]: 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: 79]: 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: 51]: 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: 79]: 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: 58]: 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: 58]: 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: 58]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: 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: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 72]: 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: 65]: 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: 64]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 43 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: 1.4s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 359 IncrementalHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 19 mSDtfsCounter, 359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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! [2024-01-27 14:50:55,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, 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