./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc.i --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/01b_inc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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/pthread-ext/01b_inc.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc.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-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:01:07,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:01:07,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:01:07,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:01:07,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:01:07,915 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:01:07,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:01:07,916 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:01:07,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:01:07,920 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:01:07,920 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:01:07,920 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:01:07,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:01:07,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:01:07,922 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:01:07,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:01:07,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:01:07,923 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:01:07,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:01:07,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:01:07,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:01:07,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:01:07,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:01:07,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:01:07,925 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:01:07,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:01:07,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:01:07,926 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:01:07,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:01:07,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:01:07,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:01:07,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:01:07,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:07,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:01:07,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:01:07,928 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:01:07,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:01:07,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:01:07,929 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:01:07,929 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:01:07,929 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:01:07,929 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:01:07,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:01:07,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:01:08,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:01:08,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:01:08,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:01:08,172 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:01:08,173 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:01:08,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc.i [2024-01-31 16:01:09,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:01:09,679 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:01:09,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i [2024-01-31 16:01:09,690 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6507fb3dc/edf1eba9d5164d5f85aea46e55d3799e/FLAGa5f6e87e2 [2024-01-31 16:01:09,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6507fb3dc/edf1eba9d5164d5f85aea46e55d3799e [2024-01-31 16:01:09,702 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:01:09,703 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:01:09,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/01b_inc.yml/witness.yml [2024-01-31 16:01:09,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:01:09,814 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:01:09,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:09,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:01:09,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:01:09,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:09" (1/2) ... [2024-01-31 16:01:09,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f9534b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:01:09" (1/2) ... [2024-01-31 16:01:09,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32429699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:09" (2/2) ... [2024-01-31 16:01:09,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f9534b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:09, skipping insertion in model container [2024-01-31 16:01:09,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:09" (2/2) ... [2024-01-31 16:01:09,822 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:01:09,871 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:01:09,872 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,872 INFO L98 nessWitnessExtractor]: Location invariant after [L726-L726] (unsigned long )arg == 0UL [2024-01-31 16:01:09,873 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,873 INFO L98 nessWitnessExtractor]: Location invariant after [L723-L723] (unsigned long )arg == 0UL [2024-01-31 16:01:09,873 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-31 16:01:09,873 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (((1U <= (unsigned int )value) && (v <= 4294967294U)) && ((unsigned long )arg == 0UL)) && ((unsigned int )value != 0U) [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant after [L716-L716] (unsigned long )arg == 0UL [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,874 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] ((0U == v) && (v == 0U)) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,875 INFO L98 nessWitnessExtractor]: Location invariant after [L723-L723] (unsigned long )arg == 0UL [2024-01-31 16:01:09,875 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-31 16:01:09,875 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (v <= 4294967294U) && ((unsigned long )arg == 0UL) [2024-01-31 16:01:09,875 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-01-31 16:01:09,875 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-31 16:01:09,875 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-31 16:01:09,919 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:01:10,219 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[31005,31018] [2024-01-31 16:01:10,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:10,255 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:01:10,326 WARN L424 MainDispatcher]: Unable to annotate unsigned with a witness entry [2024-01-31 16:01:10,326 WARN L424 MainDispatcher]: Unable to annotate v = 0 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 [2024-01-31 16:01:10,357 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc.i[31005,31018] Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:01:10,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:01:10,384 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:01:10,384 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10 WrapperNode [2024-01-31 16:01:10,384 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:01:10,385 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:10,385 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:01:10,385 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:01:10,391 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 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,408 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 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,431 INFO L138 Inliner]: procedures = 172, calls = 19, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 75 [2024-01-31 16:01:10,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:01:10,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:01:10,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:01:10,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:01:10,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,457 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,480 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-01-31 16:01:10,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,505 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:01:10,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:01:10,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:01:10,535 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:01:10,536 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (1/1) ... [2024-01-31 16:01:10,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:01:10,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:01:10,626 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) [2024-01-31 16:01:10,666 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 [2024-01-31 16:01:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:01:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:01:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:01:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:01:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:01:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:01:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:01:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:01:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:01:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:01:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:01:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:01:10,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:01:10,701 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:01:10,801 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:01:10,803 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:01:10,958 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:01:10,958 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:01:11,055 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:01:11,055 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-31 16:01:11,056 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:11 BoogieIcfgContainer [2024-01-31 16:01:11,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:01:11,057 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:01:11,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:01:11,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:01:11,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:01:09" (1/4) ... [2024-01-31 16:01:11,061 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea9f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:01:11, skipping insertion in model container [2024-01-31 16:01:11,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:01:09" (2/4) ... [2024-01-31 16:01:11,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea9f94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:11, skipping insertion in model container [2024-01-31 16:01:11,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:01:10" (3/4) ... [2024-01-31 16:01:11,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dea9f94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:01:11, skipping insertion in model container [2024-01-31 16:01:11,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:01:11" (4/4) ... [2024-01-31 16:01:11,063 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-01-31 16:01:11,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:01:11,080 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2024-01-31 16:01:11,080 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:01:11,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:11,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 39 transitions, 82 flow [2024-01-31 16:01:11,197 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-01-31 16:01:11,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:11,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-31 16:01:11,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 39 transitions, 82 flow [2024-01-31 16:01:11,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 39 transitions, 82 flow [2024-01-31 16:01:11,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:11,215 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;@e2bf223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:11,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-01-31 16:01:11,218 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:11,218 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:01:11,218 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:11,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:11,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:11,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-01-31 16:01:11,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash 258683094, now seen corresponding path program 1 times [2024-01-31 16:01:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898284511] [2024-01-31 16:01:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:11,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898284511] [2024-01-31 16:01:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898284511] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:11,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:11,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963023456] [2024-01-31 16:01:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:11,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:11,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:11,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-01-31 16:01:11,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 39 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-01-31 16:01:11,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:11,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-01-31 16:01:11,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:11,792 INFO L124 PetriNetUnfolderBase]: 32/117 cut-off events. [2024-01-31 16:01:11,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:01:11,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 117 events. 32/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 426 event pairs, 24 based on Foata normal form. 9/108 useless extension candidates. Maximal degree in co-relation 188. Up to 63 conditions per place. [2024-01-31 16:01:11,796 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 20 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2024-01-31 16:01:11,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 33 transitions, 116 flow [2024-01-31 16:01:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:11,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-01-31 16:01:11,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-01-31 16:01:11,808 INFO L175 Difference]: Start difference. First operand has 41 places, 39 transitions, 82 flow. Second operand 4 states and 74 transitions. [2024-01-31 16:01:11,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 33 transitions, 116 flow [2024-01-31 16:01:11,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:11,812 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 70 flow [2024-01-31 16:01:11,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-01-31 16:01:11,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2024-01-31 16:01:11,818 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 70 flow [2024-01-31 16:01:11,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-01-31 16:01:11,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:11,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:01:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:01:11,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-01-31 16:01:11,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:11,822 INFO L85 PathProgramCache]: Analyzing trace with hash -570789276, now seen corresponding path program 1 times [2024-01-31 16:01:11,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:11,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505795848] [2024-01-31 16:01:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:11,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:11,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:11,888 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:11,889 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-01-31 16:01:11,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 31 remaining) [2024-01-31 16:01:11,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 31 remaining) [2024-01-31 16:01:11,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 31 remaining) [2024-01-31 16:01:11,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 31 remaining) [2024-01-31 16:01:11,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 31 remaining) [2024-01-31 16:01:11,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 31 remaining) [2024-01-31 16:01:11,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 31 remaining) [2024-01-31 16:01:11,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 31 remaining) [2024-01-31 16:01:11,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 31 remaining) [2024-01-31 16:01:11,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 31 remaining) [2024-01-31 16:01:11,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 31 remaining) [2024-01-31 16:01:11,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 31 remaining) [2024-01-31 16:01:11,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 31 remaining) [2024-01-31 16:01:11,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 31 remaining) [2024-01-31 16:01:11,898 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 31 remaining) [2024-01-31 16:01:11,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 31 remaining) [2024-01-31 16:01:11,899 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 31 remaining) [2024-01-31 16:01:11,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 31 remaining) [2024-01-31 16:01:11,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 31 remaining) [2024-01-31 16:01:11,900 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 31 remaining) [2024-01-31 16:01:11,901 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 31 remaining) [2024-01-31 16:01:11,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 31 remaining) [2024-01-31 16:01:11,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 31 remaining) [2024-01-31 16:01:11,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 31 remaining) [2024-01-31 16:01:11,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 31 remaining) [2024-01-31 16:01:11,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 31 remaining) [2024-01-31 16:01:11,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 31 remaining) [2024-01-31 16:01:11,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 31 remaining) [2024-01-31 16:01:11,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 31 remaining) [2024-01-31 16:01:11,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 31 remaining) [2024-01-31 16:01:11,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:01:11,905 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-01-31 16:01:11,908 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:11,908 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:01:11,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:11,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 73 transitions, 156 flow [2024-01-31 16:01:11,963 INFO L124 PetriNetUnfolderBase]: 2/78 cut-off events. [2024-01-31 16:01:11,965 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:01:11,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 78 events. 2/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 235 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 69. Up to 3 conditions per place. [2024-01-31 16:01:11,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 73 transitions, 156 flow [2024-01-31 16:01:11,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 73 transitions, 156 flow [2024-01-31 16:01:11,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:11,973 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;@e2bf223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:11,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-01-31 16:01:11,977 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:11,977 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:01:11,977 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:01:11,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:11,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:11,978 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-31 16:01:11,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:11,978 INFO L85 PathProgramCache]: Analyzing trace with hash 328380128, now seen corresponding path program 1 times [2024-01-31 16:01:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40031959] [2024-01-31 16:01:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:11,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:12,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:12,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40031959] [2024-01-31 16:01:12,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40031959] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:12,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:12,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823850946] [2024-01-31 16:01:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:12,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-01-31 16:01:12,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 73 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-31 16:01:12,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:12,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-01-31 16:01:12,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:12,462 INFO L124 PetriNetUnfolderBase]: 1033/2303 cut-off events. [2024-01-31 16:01:12,462 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-01-31 16:01:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 2303 events. 1033/2303 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16707 event pairs, 769 based on Foata normal form. 117/1892 useless extension candidates. Maximal degree in co-relation 3342. Up to 1288 conditions per place. [2024-01-31 16:01:12,480 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 46 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-01-31 16:01:12,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 267 flow [2024-01-31 16:01:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-01-31 16:01:12,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2024-01-31 16:01:12,485 INFO L175 Difference]: Start difference. First operand has 76 places, 73 transitions, 156 flow. Second operand 4 states and 178 transitions. [2024-01-31 16:01:12,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 267 flow [2024-01-31 16:01:12,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 267 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:12,488 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 138 flow [2024-01-31 16:01:12,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-01-31 16:01:12,489 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2024-01-31 16:01:12,489 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 138 flow [2024-01-31 16:01:12,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-31 16:01:12,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:12,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:12,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:01:12,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-31 16:01:12,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1223857049, now seen corresponding path program 1 times [2024-01-31 16:01:12,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206322337] [2024-01-31 16:01:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:12,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:01:12,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:12,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206322337] [2024-01-31 16:01:12,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206322337] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:12,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:12,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903946884] [2024-01-31 16:01:12,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:12,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:12,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2024-01-31 16:01:12,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-01-31 16:01:12,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:12,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2024-01-31 16:01:12,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:12,914 INFO L124 PetriNetUnfolderBase]: 1052/2214 cut-off events. [2024-01-31 16:01:12,915 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-01-31 16:01:12,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4125 conditions, 2214 events. 1052/2214 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 16012 event pairs, 336 based on Foata normal form. 117/1919 useless extension candidates. Maximal degree in co-relation 2344. Up to 1287 conditions per place. [2024-01-31 16:01:12,927 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 58 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-01-31 16:01:12,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 314 flow [2024-01-31 16:01:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:12,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-01-31 16:01:12,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2024-01-31 16:01:12,931 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 138 flow. Second operand 4 states and 178 transitions. [2024-01-31 16:01:12,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 314 flow [2024-01-31 16:01:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 300 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:12,934 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 128 flow [2024-01-31 16:01:12,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-01-31 16:01:12,937 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2024-01-31 16:01:12,937 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 128 flow [2024-01-31 16:01:12,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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) [2024-01-31 16:01:12,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:12,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:01:12,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:01:12,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 43 more)] === [2024-01-31 16:01:12,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash 715106653, now seen corresponding path program 1 times [2024-01-31 16:01:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442339761] [2024-01-31 16:01:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:12,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:12,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:12,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:12,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:12,978 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2024-01-31 16:01:12,978 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 46 remaining) [2024-01-31 16:01:12,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 46 remaining) [2024-01-31 16:01:12,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 46 remaining) [2024-01-31 16:01:12,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 46 remaining) [2024-01-31 16:01:12,980 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 46 remaining) [2024-01-31 16:01:12,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 46 remaining) [2024-01-31 16:01:12,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (32 of 46 remaining) [2024-01-31 16:01:12,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 46 remaining) [2024-01-31 16:01:12,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 46 remaining) [2024-01-31 16:01:12,981 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 46 remaining) [2024-01-31 16:01:12,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 46 remaining) [2024-01-31 16:01:12,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 46 remaining) [2024-01-31 16:01:12,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 46 remaining) [2024-01-31 16:01:12,982 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 46 remaining) [2024-01-31 16:01:12,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 46 remaining) [2024-01-31 16:01:12,984 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 46 remaining) [2024-01-31 16:01:12,985 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 46 remaining) [2024-01-31 16:01:12,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 46 remaining) [2024-01-31 16:01:12,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 46 remaining) [2024-01-31 16:01:12,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 46 remaining) [2024-01-31 16:01:12,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:01:12,986 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-01-31 16:01:12,987 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:12,987 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:01:13,031 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:13,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 107 transitions, 232 flow [2024-01-31 16:01:13,047 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-01-31 16:01:13,048 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:01:13,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 115 events. 3/115 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 461 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2024-01-31 16:01:13,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 107 transitions, 232 flow [2024-01-31 16:01:13,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 107 transitions, 232 flow [2024-01-31 16:01:13,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:13,054 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;@e2bf223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:13,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-01-31 16:01:13,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:13,056 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:01:13,056 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:01:13,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:13,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:13,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:13,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:13,057 INFO L85 PathProgramCache]: Analyzing trace with hash 430522476, now seen corresponding path program 1 times [2024-01-31 16:01:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:13,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308787862] [2024-01-31 16:01:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:13,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308787862] [2024-01-31 16:01:13,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308787862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:13,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:13,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:13,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220014991] [2024-01-31 16:01:13,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:13,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:13,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:13,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:13,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-01-31 16:01:13,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-01-31 16:01:13,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:13,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-01-31 16:01:13,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:16,075 INFO L124 PetriNetUnfolderBase]: 20389/38071 cut-off events. [2024-01-31 16:01:16,076 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2024-01-31 16:01:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67343 conditions, 38071 events. 20389/38071 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 376680 event pairs, 14506 based on Foata normal form. 1413/30030 useless extension candidates. Maximal degree in co-relation 4166. Up to 21604 conditions per place. [2024-01-31 16:01:16,338 INFO L140 encePairwiseOnDemand]: 89/107 looper letters, 72 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-01-31 16:01:16,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 121 transitions, 422 flow [2024-01-31 16:01:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:16,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:16,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-01-31 16:01:16,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6588785046728972 [2024-01-31 16:01:16,341 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 232 flow. Second operand 4 states and 282 transitions. [2024-01-31 16:01:16,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 121 transitions, 422 flow [2024-01-31 16:01:16,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 418 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:01:16,344 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 206 flow [2024-01-31 16:01:16,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2024-01-31 16:01:16,345 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -12 predicate places. [2024-01-31 16:01:16,345 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 206 flow [2024-01-31 16:01:16,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-01-31 16:01:16,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:16,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:16,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:01:16,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:16,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:16,347 INFO L85 PathProgramCache]: Analyzing trace with hash 862126727, now seen corresponding path program 1 times [2024-01-31 16:01:16,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:16,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003227024] [2024-01-31 16:01:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:16,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:01:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003227024] [2024-01-31 16:01:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003227024] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:16,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310143877] [2024-01-31 16:01:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:16,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-01-31 16:01:16,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-01-31 16:01:16,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:16,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-01-31 16:01:16,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:19,069 INFO L124 PetriNetUnfolderBase]: 21409/38998 cut-off events. [2024-01-31 16:01:19,069 INFO L125 PetriNetUnfolderBase]: For 2100/2100 co-relation queries the response was YES. [2024-01-31 16:01:19,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71110 conditions, 38998 events. 21409/38998 cut-off events. For 2100/2100 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 377486 event pairs, 10682 based on Foata normal form. 1521/31411 useless extension candidates. Maximal degree in co-relation 42734. Up to 22828 conditions per place. [2024-01-31 16:01:19,302 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 84 selfloop transitions, 3 changer transitions 0/128 dead transitions. [2024-01-31 16:01:19,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 128 transitions, 465 flow [2024-01-31 16:01:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-01-31 16:01:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6448598130841121 [2024-01-31 16:01:19,303 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 206 flow. Second operand 4 states and 276 transitions. [2024-01-31 16:01:19,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 128 transitions, 465 flow [2024-01-31 16:01:19,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 451 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:19,308 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 196 flow [2024-01-31 16:01:19,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-01-31 16:01:19,308 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -17 predicate places. [2024-01-31 16:01:19,309 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 196 flow [2024-01-31 16:01:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 4 states have internal predecessors, (191), 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) [2024-01-31 16:01:19,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:19,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:19,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:01:19,309 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:19,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1839672572, now seen corresponding path program 1 times [2024-01-31 16:01:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284305458] [2024-01-31 16:01:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:19,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284305458] [2024-01-31 16:01:19,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284305458] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:19,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:01:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565095010] [2024-01-31 16:01:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:01:19,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:01:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:01:19,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-01-31 16:01:19,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-01-31 16:01:19,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:19,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-01-31 16:01:19,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:21,466 INFO L124 PetriNetUnfolderBase]: 20641/32281 cut-off events. [2024-01-31 16:01:21,466 INFO L125 PetriNetUnfolderBase]: For 2022/2022 co-relation queries the response was YES. [2024-01-31 16:01:21,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63028 conditions, 32281 events. 20641/32281 cut-off events. For 2022/2022 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 256277 event pairs, 1993 based on Foata normal form. 0/26830 useless extension candidates. Maximal degree in co-relation 58311. Up to 25710 conditions per place. [2024-01-31 16:01:21,695 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 73 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2024-01-31 16:01:21,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 406 flow [2024-01-31 16:01:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:01:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:01:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2024-01-31 16:01:21,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.67601246105919 [2024-01-31 16:01:21,697 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 196 flow. Second operand 3 states and 217 transitions. [2024-01-31 16:01:21,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 406 flow [2024-01-31 16:01:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 110 transitions, 394 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:01:21,702 INFO L231 Difference]: Finished difference. Result has 88 places, 82 transitions, 182 flow [2024-01-31 16:01:21,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=88, PETRI_TRANSITIONS=82} [2024-01-31 16:01:21,704 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -23 predicate places. [2024-01-31 16:01:21,704 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 82 transitions, 182 flow [2024-01-31 16:01:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2024-01-31 16:01:21,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:21,705 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-31 16:01:21,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:01:21,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:21,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash -379176403, now seen corresponding path program 1 times [2024-01-31 16:01:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:21,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392447090] [2024-01-31 16:01:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-31 16:01:21,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:21,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392447090] [2024-01-31 16:01:21,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392447090] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:21,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:21,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347374615] [2024-01-31 16:01:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:21,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:21,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:21,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 107 [2024-01-31 16:01:21,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-01-31 16:01:21,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:21,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 107 [2024-01-31 16:01:21,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:01:23,514 INFO L124 PetriNetUnfolderBase]: 16711/27462 cut-off events. [2024-01-31 16:01:23,514 INFO L125 PetriNetUnfolderBase]: For 3234/3234 co-relation queries the response was YES. [2024-01-31 16:01:23,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51084 conditions, 27462 events. 16711/27462 cut-off events. For 3234/3234 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 229728 event pairs, 3442 based on Foata normal form. 1080/23938 useless extension candidates. Maximal degree in co-relation 45962. Up to 16920 conditions per place. [2024-01-31 16:01:23,666 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 89 selfloop transitions, 3 changer transitions 0/125 dead transitions. [2024-01-31 16:01:23,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 452 flow [2024-01-31 16:01:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:01:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:01:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2024-01-31 16:01:23,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565420560747663 [2024-01-31 16:01:23,668 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 182 flow. Second operand 4 states and 281 transitions. [2024-01-31 16:01:23,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 452 flow [2024-01-31 16:01:23,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 125 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:01:23,681 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 177 flow [2024-01-31 16:01:23,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-01-31 16:01:23,683 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -26 predicate places. [2024-01-31 16:01:23,683 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 177 flow [2024-01-31 16:01:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-01-31 16:01:23,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:23,683 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-31 16:01:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:01:23,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 58 more)] === [2024-01-31 16:01:23,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1130403043, now seen corresponding path program 1 times [2024-01-31 16:01:23,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076329422] [2024-01-31 16:01:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:23,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:01:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:01:23,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:01:23,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:01:23,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2024-01-31 16:01:23,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 61 remaining) [2024-01-31 16:01:23,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 61 remaining) [2024-01-31 16:01:23,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 61 remaining) [2024-01-31 16:01:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 61 remaining) [2024-01-31 16:01:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 61 remaining) [2024-01-31 16:01:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 61 remaining) [2024-01-31 16:01:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 61 remaining) [2024-01-31 16:01:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 61 remaining) [2024-01-31 16:01:23,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (47 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 61 remaining) [2024-01-31 16:01:23,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 61 remaining) [2024-01-31 16:01:23,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (32 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 61 remaining) [2024-01-31 16:01:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 61 remaining) [2024-01-31 16:01:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (17 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 61 remaining) [2024-01-31 16:01:23,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 61 remaining) [2024-01-31 16:01:23,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 61 remaining) [2024-01-31 16:01:23,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 61 remaining) [2024-01-31 16:01:23,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 61 remaining) [2024-01-31 16:01:23,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 61 remaining) [2024-01-31 16:01:23,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONERROR_FUNCTION (2 of 61 remaining) [2024-01-31 16:01:23,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 61 remaining) [2024-01-31 16:01:23,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 61 remaining) [2024-01-31 16:01:23,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:01:23,716 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-01-31 16:01:23,716 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:01:23,717 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-31 16:01:23,759 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:01:23,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 141 transitions, 310 flow [2024-01-31 16:01:23,774 INFO L124 PetriNetUnfolderBase]: 4/152 cut-off events. [2024-01-31 16:01:23,774 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:01:23,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 152 events. 4/152 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 681 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 135. Up to 5 conditions per place. [2024-01-31 16:01:23,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 141 transitions, 310 flow [2024-01-31 16:01:23,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 141 transitions, 310 flow [2024-01-31 16:01:23,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:01:23,780 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;@e2bf223, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:01:23,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2024-01-31 16:01:23,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:01:23,961 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-01-31 16:01:23,961 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:01:23,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:01:23,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:01:23,962 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 73 more)] === [2024-01-31 16:01:23,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:01:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash 565112250, now seen corresponding path program 1 times [2024-01-31 16:01:23,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:01:23,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195628359] [2024-01-31 16:01:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:01:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:01:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:01:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:01:24,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:01:24,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195628359] [2024-01-31 16:01:24,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195628359] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:01:24,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:01:24,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:01:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034539826] [2024-01-31 16:01:24,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:01:24,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:01:24,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:01:24,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:01:24,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:01:24,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 141 [2024-01-31 16:01:24,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 141 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 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) [2024-01-31 16:01:24,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:01:24,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 141 [2024-01-31 16:01:24,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand