./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_20-publish-regression_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/goblint-regression/13-privatized_20-publish-regression_true.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_20-publish-regression_true.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:05:25,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:05:25,727 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:05:25,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:05:25,733 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:05:25,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:05:25,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:05:25,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:05:25,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:05:25,765 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:05:25,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:05:25,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:05:25,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:05:25,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:05:25,768 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:05:25,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:05:25,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:05:25,768 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:05:25,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:05:25,769 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:05:25,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:05:25,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:05:25,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:05:25,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:05:25,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:05:25,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:05:25,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:05:25,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:05:25,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:05:25,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:05:25,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:05:25,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:05:25,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:05:25,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:05:25,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:05:25,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:05:25,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:05:25,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:05:25,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:05:25,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:05:25,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:05:25,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:05:25,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:05:25,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:05:25,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:05:26,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:05:26,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:05:26,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:05:26,016 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:05:26,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2024-06-28 01:05:27,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:05:27,206 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:05:27,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2024-06-28 01:05:27,220 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc8b0188/136c853d439649d28b6ea74258463b56/FLAGd76dd3ff5 [2024-06-28 01:05:27,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc8b0188/136c853d439649d28b6ea74258463b56 [2024-06-28 01:05:27,231 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:05:27,232 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:05:27,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_20-publish-regression_true.yml/witness.yml [2024-06-28 01:05:27,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:05:27,303 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:05:27,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:05:27,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:05:27,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:05:27,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:05:27" (1/2) ... [2024-06-28 01:05:27,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b22112b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:05:27, skipping insertion in model container [2024-06-28 01:05:27,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:05:27" (1/2) ... [2024-06-28 01:05:27,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@173fe3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:05:27, skipping insertion in model container [2024-06-28 01:05:27,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:27" (2/2) ... [2024-06-28 01:05:27,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b22112b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27, skipping insertion in model container [2024-06-28 01:05:27,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:27" (2/2) ... [2024-06-28 01:05:27,313 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:05:27,338 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:05:27,339 INFO L97 edCorrectnessWitness]: Location invariant before [L700-L700] ((! multithreaded || (glob1 == 0 || glob1 == 5)) && (! multithreaded || (mutex2_locked || (glob1 == 0 || glob1 == 5)))) && (! multithreaded || (mutex1_locked || glob1 == 0)) [2024-06-28 01:05:27,339 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-28 01:05:27,340 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:05:27,340 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-28 01:05:27,340 INFO L106 edCorrectnessWitness]: ghost_update [L699-L699] multithreaded = 1; [2024-06-28 01:05:27,340 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] mutex1_locked = 0; [2024-06-28 01:05:27,340 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex2_locked = 1; [2024-06-28 01:05:27,340 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] mutex1_locked = 1; [2024-06-28 01:05:27,341 INFO L106 edCorrectnessWitness]: ghost_update [L702-L702] mutex1_locked = 0; [2024-06-28 01:05:27,341 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] mutex2_locked = 1; [2024-06-28 01:05:27,341 INFO L106 edCorrectnessWitness]: ghost_update [L688-L688] mutex2_locked = 0; [2024-06-28 01:05:27,341 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex2_locked = 0; [2024-06-28 01:05:27,341 INFO L106 edCorrectnessWitness]: ghost_update [L685-L685] mutex1_locked = 1; [2024-06-28 01:05:27,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:05:27,511 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i[1095,1108] [2024-06-28 01:05:27,634 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:05:27,645 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:05:27,678 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i[1095,1108] 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 [2024-06-28 01:05:27,727 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:05:27,766 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:05:27,766 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27 WrapperNode [2024-06-28 01:05:27,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:05:27,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:05:27,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:05:27,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:05:27,774 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 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,796 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 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,819 INFO L138 Inliner]: procedures = 162, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 94 [2024-06-28 01:05:27,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:05:27,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:05:27,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:05:27,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:05:27,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,835 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,851 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-28 01:05:27,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,856 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,859 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:05:27,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:05:27,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:05:27,860 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:05:27,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (1/1) ... [2024-06-28 01:05:27,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:05:27,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:05:27,983 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) [2024-06-28 01:05:27,997 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 [2024-06-28 01:05:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:05:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:05:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-28 01:05:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-28 01:05:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:05:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:05:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 01:05:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:05:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:05:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:05:28,027 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:05:28,131 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:05:28,133 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:05:28,257 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:05:28,258 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:05:28,358 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:05:28,358 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:05:28,358 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:05:28 BoogieIcfgContainer [2024-06-28 01:05:28,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:05:28,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:05:28,360 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:05:28,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:05:28,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:05:27" (1/4) ... [2024-06-28 01:05:28,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8fac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:05:28, skipping insertion in model container [2024-06-28 01:05:28,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:27" (2/4) ... [2024-06-28 01:05:28,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8fac4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:05:28, skipping insertion in model container [2024-06-28 01:05:28,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:27" (3/4) ... [2024-06-28 01:05:28,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a8fac4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:05:28, skipping insertion in model container [2024-06-28 01:05:28,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:05:28" (4/4) ... [2024-06-28 01:05:28,365 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_20-publish-regression_true.i [2024-06-28 01:05:28,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:05:28,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:05:28,380 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:05:28,415 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-06-28 01:05:28,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 41 transitions, 89 flow [2024-06-28 01:05:28,511 INFO L124 PetriNetUnfolderBase]: 3/40 cut-off events. [2024-06-28 01:05:28,511 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 01:05:28,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 40 events. 3/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-06-28 01:05:28,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 41 transitions, 89 flow [2024-06-28 01:05:28,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2024-06-28 01:05:28,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:05:28,528 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;@328cd950, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:05:28,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 01:05:28,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:05:28,543 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-06-28 01:05:28,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:05:28,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:28,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-06-28 01:05:28,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:05:28,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:28,549 INFO L85 PathProgramCache]: Analyzing trace with hash 255819, now seen corresponding path program 1 times [2024-06-28 01:05:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680516595] [2024-06-28 01:05:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:28,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680516595] [2024-06-28 01:05:28,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680516595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:28,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:28,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:05:28,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624520540] [2024-06-28 01:05:28,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:28,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:05:28,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:05:28,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:05:28,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2024-06-28 01:05:28,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-06-28 01:05:28,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:28,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2024-06-28 01:05:28,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:28,937 INFO L124 PetriNetUnfolderBase]: 70/214 cut-off events. [2024-06-28 01:05:28,937 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-28 01:05:28,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 214 events. 70/214 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 859 event pairs, 60 based on Foata normal form. 19/211 useless extension candidates. Maximal degree in co-relation 366. Up to 139 conditions per place. [2024-06-28 01:05:28,941 INFO L140 encePairwiseOnDemand]: 34/41 looper letters, 23 selfloop transitions, 4 changer transitions 4/43 dead transitions. [2024-06-28 01:05:28,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 151 flow [2024-06-28 01:05:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:05:28,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:05:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 01:05:28,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6260162601626016 [2024-06-28 01:05:28,952 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 3 states and 77 transitions. [2024-06-28 01:05:28,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 151 flow [2024-06-28 01:05:28,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:05:28,957 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 76 flow [2024-06-28 01:05:28,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2024-06-28 01:05:28,961 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2024-06-28 01:05:28,961 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 76 flow [2024-06-28 01:05:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2024-06-28 01:05:28,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:28,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:05:28,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:05:28,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:28,964 INFO L85 PathProgramCache]: Analyzing trace with hash 97700875, now seen corresponding path program 1 times [2024-06-28 01:05:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:28,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924285589] [2024-06-28 01:05:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:28,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:29,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:29,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924285589] [2024-06-28 01:05:29,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924285589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:29,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:29,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:05:29,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57188807] [2024-06-28 01:05:29,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:29,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:05:29,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:29,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:05:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:05:29,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 41 [2024-06-28 01:05:29,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-06-28 01:05:29,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:29,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 41 [2024-06-28 01:05:29,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:29,108 INFO L124 PetriNetUnfolderBase]: 53/183 cut-off events. [2024-06-28 01:05:29,109 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-28 01:05:29,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 183 events. 53/183 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 736 event pairs, 33 based on Foata normal form. 7/181 useless extension candidates. Maximal degree in co-relation 318. Up to 78 conditions per place. [2024-06-28 01:05:29,110 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 21 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-06-28 01:05:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 38 transitions, 136 flow [2024-06-28 01:05:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:05:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:05:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:05:29,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178861788617886 [2024-06-28 01:05:29,112 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:05:29,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 38 transitions, 136 flow [2024-06-28 01:05:29,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 38 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:29,114 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 79 flow [2024-06-28 01:05:29,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-28 01:05:29,115 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-06-28 01:05:29,116 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 79 flow [2024-06-28 01:05:29,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-06-28 01:05:29,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:29,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:29,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:05:29,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:05:29,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 144766831, now seen corresponding path program 1 times [2024-06-28 01:05:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:29,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163528556] [2024-06-28 01:05:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:29,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:29,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:29,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163528556] [2024-06-28 01:05:29,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163528556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:29,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:29,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064647778] [2024-06-28 01:05:29,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:29,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:05:29,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:29,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:05:29,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:05:29,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2024-06-28 01:05:29,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-06-28 01:05:29,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:29,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2024-06-28 01:05:29,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:29,335 INFO L124 PetriNetUnfolderBase]: 91/274 cut-off events. [2024-06-28 01:05:29,335 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:05:29,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 274 events. 91/274 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1268 event pairs, 27 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 511. Up to 96 conditions per place. [2024-06-28 01:05:29,339 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 35 selfloop transitions, 11 changer transitions 12/69 dead transitions. [2024-06-28 01:05:29,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 282 flow [2024-06-28 01:05:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 01:05:29,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296167247386759 [2024-06-28 01:05:29,346 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 79 flow. Second operand 7 states and 152 transitions. [2024-06-28 01:05:29,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 282 flow [2024-06-28 01:05:29,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:29,348 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 134 flow [2024-06-28 01:05:29,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-06-28 01:05:29,349 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-06-28 01:05:29,349 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 134 flow [2024-06-28 01:05:29,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2024-06-28 01:05:29,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:29,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:29,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:05:29,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:05:29,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1175223610, now seen corresponding path program 1 times [2024-06-28 01:05:29,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:29,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093779199] [2024-06-28 01:05:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:29,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093779199] [2024-06-28 01:05:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093779199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:29,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:29,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:29,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161055545] [2024-06-28 01:05:29,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:29,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:05:29,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:29,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:05:29,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:05:29,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 01:05:29,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-06-28 01:05:29,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:29,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 01:05:29,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:29,490 INFO L124 PetriNetUnfolderBase]: 60/234 cut-off events. [2024-06-28 01:05:29,490 INFO L125 PetriNetUnfolderBase]: For 112/115 co-relation queries the response was YES. [2024-06-28 01:05:29,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 234 events. 60/234 cut-off events. For 112/115 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1146 event pairs, 17 based on Foata normal form. 4/228 useless extension candidates. Maximal degree in co-relation 504. Up to 61 conditions per place. [2024-06-28 01:05:29,491 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 24 selfloop transitions, 10 changer transitions 8/56 dead transitions. [2024-06-28 01:05:29,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 272 flow [2024-06-28 01:05:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:05:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:05:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:05:29,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528455284552846 [2024-06-28 01:05:29,493 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 134 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:05:29,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 272 flow [2024-06-28 01:05:29,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 263 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:29,499 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 168 flow [2024-06-28 01:05:29,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-28 01:05:29,500 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2024-06-28 01:05:29,500 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 168 flow [2024-06-28 01:05:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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) [2024-06-28 01:05:29,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:29,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:29,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:05:29,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:05:29,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:29,502 INFO L85 PathProgramCache]: Analyzing trace with hash 396211548, now seen corresponding path program 1 times [2024-06-28 01:05:29,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924147471] [2024-06-28 01:05:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:29,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924147471] [2024-06-28 01:05:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924147471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:29,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:05:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726884870] [2024-06-28 01:05:29,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:29,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:05:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:05:29,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:05:29,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2024-06-28 01:05:29,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 168 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:29,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:29,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2024-06-28 01:05:29,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:29,711 INFO L124 PetriNetUnfolderBase]: 6/53 cut-off events. [2024-06-28 01:05:29,711 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-06-28 01:05:29,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 53 events. 6/53 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 9/59 useless extension candidates. Maximal degree in co-relation 120. Up to 27 conditions per place. [2024-06-28 01:05:29,712 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 11 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2024-06-28 01:05:29,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 126 flow [2024-06-28 01:05:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:05:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:05:29,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-28 01:05:29,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426829268292683 [2024-06-28 01:05:29,713 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 168 flow. Second operand 4 states and 89 transitions. [2024-06-28 01:05:29,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 126 flow [2024-06-28 01:05:29,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 89 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:05:29,714 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 65 flow [2024-06-28 01:05:29,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2024-06-28 01:05:29,715 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2024-06-28 01:05:29,715 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 65 flow [2024-06-28 01:05:29,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:29,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:29,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:29,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:05:29,716 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-06-28 01:05:29,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash 814565310, now seen corresponding path program 1 times [2024-06-28 01:05:29,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:29,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286370779] [2024-06-28 01:05:29,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:29,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:29,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:29,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286370779] [2024-06-28 01:05:29,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286370779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:29,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:29,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:29,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589212835] [2024-06-28 01:05:29,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:29,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:05:29,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:29,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:05:29,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:05:29,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 41 [2024-06-28 01:05:29,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-06-28 01:05:29,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:29,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 41 [2024-06-28 01:05:29,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:29,827 INFO L124 PetriNetUnfolderBase]: 7/49 cut-off events. [2024-06-28 01:05:29,828 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-06-28 01:05:29,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 49 events. 7/49 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 2 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 98. Up to 17 conditions per place. [2024-06-28 01:05:29,828 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-28 01:05:29,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 25 transitions, 99 flow [2024-06-28 01:05:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:05:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:05:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2024-06-28 01:05:29,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:05:29,829 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 65 flow. Second operand 4 states and 82 transitions. [2024-06-28 01:05:29,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 25 transitions, 99 flow [2024-06-28 01:05:29,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 91 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:05:29,830 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-06-28 01:05:29,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2024-06-28 01:05:29,832 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2024-06-28 01:05:29,832 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-06-28 01:05:29,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-06-28 01:05:29,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-06-28 01:05:29,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 01:05:29,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-06-28 01:05:29,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 01:05:29,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-06-28 01:05:29,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-06-28 01:05:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:05:29,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-06-28 01:05:29,840 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:05:29,840 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:05:29,843 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-06-28 01:05:29,843 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-06-28 01:05:29,844 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:05:29 BasicIcfg [2024-06-28 01:05:29,844 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:05:29,845 INFO L158 Benchmark]: Toolchain (without parser) took 2542.07ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 116.6MB in the beginning and 179.6MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:05:29,848 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:05:29,848 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:05:29,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.10ms. Allocated memory is still 178.3MB. Free memory was 116.6MB in the beginning and 90.7MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-28 01:05:29,849 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.26ms. Allocated memory is still 178.3MB. Free memory was 90.7MB in the beginning and 88.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:05:29,849 INFO L158 Benchmark]: Boogie Preprocessor took 38.45ms. Allocated memory is still 178.3MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:05:29,849 INFO L158 Benchmark]: RCFGBuilder took 499.04ms. Allocated memory is still 178.3MB. Free memory was 86.5MB in the beginning and 59.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-28 01:05:29,849 INFO L158 Benchmark]: TraceAbstraction took 1484.64ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 59.3MB in the beginning and 179.6MB in the end (delta: -120.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:05:29,850 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 463.10ms. Allocated memory is still 178.3MB. Free memory was 116.6MB in the beginning and 90.7MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.26ms. Allocated memory is still 178.3MB. Free memory was 90.7MB in the beginning and 88.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.45ms. Allocated memory is still 178.3MB. Free memory was 88.6MB in the beginning and 86.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 499.04ms. Allocated memory is still 178.3MB. Free memory was 86.5MB in the beginning and 59.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1484.64ms. Allocated memory was 178.3MB in the beginning and 237.0MB in the end (delta: 58.7MB). Free memory was 59.3MB in the beginning and 179.6MB in the end (delta: -120.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 58 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 150 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 357 IncrementalHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 9 mSDtfsCounter, 357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:05:29,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE