./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.2024-05-07_14-17-48.files/mutex-meet/13-privatized_20-publish-regression_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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.2024-05-07_14-17-48.files/mutex-meet/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-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:49:02,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:49:02,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:49:02,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:49:02,131 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:49:02,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:49:02,154 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:49:02,154 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:49:02,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:49:02,157 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:49:02,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:49:02,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:49:02,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:49:02,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:49:02,160 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:49:02,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:49:02,161 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:49:02,161 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:49:02,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:49:02,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:49:02,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:49:02,162 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:49:02,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:49:02,162 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:49:02,162 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:49:02,163 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:49:02,163 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:49:02,163 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:49:02,164 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:49:02,164 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:49:02,165 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:49:02,165 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:49:02,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:49:02,165 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:49:02,165 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:49:02,166 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:49:02,166 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:49:02,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:49:02,166 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:49:02,166 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:49:02,166 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:49:02,167 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:49:02,167 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:49:02,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:49:02,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:49:02,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:49:02,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:49:02,448 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:49:02,448 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:49:02,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/13-privatized_20-publish-regression_true.yml/witness.yml [2024-05-12 10:49:02,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:49:02,544 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:49:02,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2024-05-12 10:49:03,677 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:49:03,945 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:49:03,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_20-publish-regression_true.i [2024-05-12 10:49:03,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c93f1d1/a0170ee8010549ac95dbab38eb463653/FLAGf1d9335b2 [2024-05-12 10:49:03,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93c93f1d1/a0170ee8010549ac95dbab38eb463653 [2024-05-12 10:49:03,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:49:03,982 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:49:03,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:49:03,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:49:03,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:49:03,990 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:02" (1/2) ... [2024-05-12 10:49:03,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4211cf82 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:03, skipping insertion in model container [2024-05-12 10:49:03,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:02" (1/2) ... [2024-05-12 10:49:03,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29ef34e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:49:03, skipping insertion in model container [2024-05-12 10:49:03,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:49:03" (2/2) ... [2024-05-12 10:49:03,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4211cf82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:03, skipping insertion in model container [2024-05-12 10:49:03,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:49:03" (2/2) ... [2024-05-12 10:49:03,995 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:49:04,025 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:49:04,026 INFO L97 edCorrectnessWitness]: Location invariant before [L700-L700] ((! multithreaded || ((((0 <= glob1 && glob1 <= 5) && glob1 <= 127) && glob1 % 5 == 0) && (glob1 == 0 || glob1 == 5))) && (! multithreaded || (mutex2_locked || ((((0 <= glob1 && glob1 <= 5) && glob1 <= 127) && glob1 % 5 == 0) && (glob1 == 0 || glob1 == 5))))) && (! multithreaded || (mutex1_locked || glob1 == 0)) [2024-05-12 10:49:04,026 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:49:04,026 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-05-12 10:49:04,027 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-05-12 10:49:04,027 INFO L106 edCorrectnessWitness]: ghost_update [L688-L688] mutex2_locked = 0; [2024-05-12 10:49:04,028 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] mutex1_locked = 1; [2024-05-12 10:49:04,028 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] mutex1_locked = 0; [2024-05-12 10:49:04,028 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] mutex2_locked = 1; [2024-05-12 10:49:04,028 INFO L106 edCorrectnessWitness]: ghost_update [L702-L702] mutex1_locked = 0; [2024-05-12 10:49:04,028 INFO L106 edCorrectnessWitness]: ghost_update [L699-L699] multithreaded = 1; [2024-05-12 10:49:04,028 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex2_locked = 0; [2024-05-12 10:49:04,029 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex2_locked = 1; [2024-05-12 10:49:04,029 INFO L106 edCorrectnessWitness]: ghost_update [L685-L685] mutex1_locked = 1; [2024-05-12 10:49:04,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:49:04,199 WARN L246 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] [2024-05-12 10:49:04,302 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:49:04,314 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:49:04,348 WARN L246 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 [2024-05-12 10:49:04,412 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:49:04,454 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:49:04,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04 WrapperNode [2024-05-12 10:49:04,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:49:04,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:49:04,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:49:04,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:49:04,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,517 INFO L138 Inliner]: procedures = 163, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2024-05-12 10:49:04,518 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:49:04,518 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:49:04,519 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:49:04,519 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:49:04,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,563 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,622 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-05-12 10:49:04,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,639 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:49:04,644 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:49:04,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:49:04,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:49:04,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (1/1) ... [2024-05-12 10:49:04,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:49:04,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:04,691 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) [2024-05-12 10:49:04,697 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 [2024-05-12 10:49:04,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:49:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:49:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:49:04,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 10:49:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:49:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:49:04,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:49:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 10:49:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 10:49:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:49:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:49:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 10:49:04,730 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 10:49:04,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:49:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:49:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:49:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:49:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 10:49:04,731 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 10:49:04,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:49:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:49:04,736 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:49:04,831 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:49:04,832 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:49:05,025 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:49:05,026 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:49:05,097 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:49:05,098 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 10:49:05,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:49:05 BoogieIcfgContainer [2024-05-12 10:49:05,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:49:05,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:49:05,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:49:05,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:49:05,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:49:02" (1/4) ... [2024-05-12 10:49:05,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38ee08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:49:05, skipping insertion in model container [2024-05-12 10:49:05,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:49:03" (2/4) ... [2024-05-12 10:49:05,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:49:05, skipping insertion in model container [2024-05-12 10:49:05,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:49:04" (3/4) ... [2024-05-12 10:49:05,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d38ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:49:05, skipping insertion in model container [2024-05-12 10:49:05,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:49:05" (4/4) ... [2024-05-12 10:49:05,104 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_20-publish-regression_true.i [2024-05-12 10:49:05,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:49:05,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 10:49:05,117 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:49:05,148 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-12 10:49:05,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 91 flow [2024-05-12 10:49:05,206 INFO L124 PetriNetUnfolderBase]: 3/41 cut-off events. [2024-05-12 10:49:05,207 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-05-12 10:49:05,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 3/41 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. 0/34 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-05-12 10:49:05,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 91 flow [2024-05-12 10:49:05,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 39 transitions, 81 flow [2024-05-12 10:49:05,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:49:05,230 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;@22ab3fce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:49:05,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-05-12 10:49:05,234 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:49:05,234 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-05-12 10:49:05,235 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:49:05,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:05,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-05-12 10:49:05,236 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)] === [2024-05-12 10:49:05,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 263731, now seen corresponding path program 1 times [2024-05-12 10:49:05,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:05,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954718773] [2024-05-12 10:49:05,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:05,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:05,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:05,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954718773] [2024-05-12 10:49:05,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954718773] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:05,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:05,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 10:49:05,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239765934] [2024-05-12 10:49:05,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:05,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:49:05,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:49:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:49:05,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 42 [2024-05-12 10:49:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-05-12 10:49:05,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:05,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 42 [2024-05-12 10:49:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:05,671 INFO L124 PetriNetUnfolderBase]: 80/233 cut-off events. [2024-05-12 10:49:05,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:49:05,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 233 events. 80/233 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 937 event pairs, 70 based on Foata normal form. 20/228 useless extension candidates. Maximal degree in co-relation 405. Up to 162 conditions per place. [2024-05-12 10:49:05,675 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 26 selfloop transitions, 4 changer transitions 4/44 dead transitions. [2024-05-12 10:49:05,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 159 flow [2024-05-12 10:49:05,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:49:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:49:05,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-05-12 10:49:05,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-05-12 10:49:05,686 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 81 flow. Second operand 3 states and 74 transitions. [2024-05-12 10:49:05,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 159 flow [2024-05-12 10:49:05,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:05,691 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 78 flow [2024-05-12 10:49:05,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-05-12 10:49:05,697 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-05-12 10:49:05,697 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 78 flow [2024-05-12 10:49:05,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-05-12 10:49:05,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:05,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:05,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:49:05,698 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)] === [2024-05-12 10:49:05,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1933076071, now seen corresponding path program 1 times [2024-05-12 10:49:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596547602] [2024-05-12 10:49:05,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:05,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:05,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:05,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:05,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596547602] [2024-05-12 10:49:05,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596547602] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:05,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:05,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:49:05,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507207396] [2024-05-12 10:49:05,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:05,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:49:05,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:05,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:49:05,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:49:05,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-05-12 10:49:05,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-05-12 10:49:05,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:05,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-05-12 10:49:05,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:05,945 INFO L124 PetriNetUnfolderBase]: 63/206 cut-off events. [2024-05-12 10:49:05,947 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-05-12 10:49:05,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 206 events. 63/206 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 837 event pairs, 39 based on Foata normal form. 7/202 useless extension candidates. Maximal degree in co-relation 361. Up to 93 conditions per place. [2024-05-12 10:49:05,949 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 25 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-05-12 10:49:05,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 148 flow [2024-05-12 10:49:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:49:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:49:05,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-05-12 10:49:05,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-05-12 10:49:05,954 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 78 flow. Second operand 3 states and 74 transitions. [2024-05-12 10:49:05,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 148 flow [2024-05-12 10:49:05,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:05,956 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 81 flow [2024-05-12 10:49:05,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-05-12 10:49:05,959 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2024-05-12 10:49:05,960 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 81 flow [2024-05-12 10:49:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-05-12 10:49:05,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:05,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:05,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:49:05,960 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)] === [2024-05-12 10:49:05,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:05,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1161969174, now seen corresponding path program 1 times [2024-05-12 10:49:05,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:05,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076943299] [2024-05-12 10:49:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:06,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:06,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076943299] [2024-05-12 10:49:06,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076943299] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:06,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:06,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:06,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131786698] [2024-05-12 10:49:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:06,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:06,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:06,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:06,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:06,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-05-12 10:49:06,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-05-12 10:49:06,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:06,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-05-12 10:49:06,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:06,222 INFO L124 PetriNetUnfolderBase]: 105/301 cut-off events. [2024-05-12 10:49:06,222 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-05-12 10:49:06,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 301 events. 105/301 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1411 event pairs, 33 based on Foata normal form. 0/281 useless extension candidates. Maximal degree in co-relation 570. Up to 119 conditions per place. [2024-05-12 10:49:06,224 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 39 selfloop transitions, 11 changer transitions 12/71 dead transitions. [2024-05-12 10:49:06,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 294 flow [2024-05-12 10:49:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 10:49:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 10:49:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-05-12 10:49:06,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-05-12 10:49:06,226 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 81 flow. Second operand 7 states and 142 transitions. [2024-05-12 10:49:06,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 294 flow [2024-05-12 10:49:06,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:06,228 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 136 flow [2024-05-12 10:49:06,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-05-12 10:49:06,229 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-05-12 10:49:06,229 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 136 flow [2024-05-12 10:49:06,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2024-05-12 10:49:06,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:06,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:06,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:49:06,230 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)] === [2024-05-12 10:49:06,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:06,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1294293136, now seen corresponding path program 1 times [2024-05-12 10:49:06,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:06,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334494095] [2024-05-12 10:49:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:06,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:06,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334494095] [2024-05-12 10:49:06,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334494095] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:06,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:06,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957836118] [2024-05-12 10:49:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:06,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:06,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:06,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-05-12 10:49:06,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-05-12 10:49:06,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:06,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-05-12 10:49:06,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:06,467 INFO L124 PetriNetUnfolderBase]: 82/286 cut-off events. [2024-05-12 10:49:06,468 INFO L125 PetriNetUnfolderBase]: For 127/131 co-relation queries the response was YES. [2024-05-12 10:49:06,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 286 events. 82/286 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1459 event pairs, 15 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 617. Up to 96 conditions per place. [2024-05-12 10:49:06,470 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 40 selfloop transitions, 11 changer transitions 7/71 dead transitions. [2024-05-12 10:49:06,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 358 flow [2024-05-12 10:49:06,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 10:49:06,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 10:49:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-05-12 10:49:06,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6047619047619047 [2024-05-12 10:49:06,475 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 136 flow. Second operand 5 states and 127 transitions. [2024-05-12 10:49:06,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 358 flow [2024-05-12 10:49:06,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 356 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:06,481 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 212 flow [2024-05-12 10:49:06,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-05-12 10:49:06,482 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-05-12 10:49:06,483 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 212 flow [2024-05-12 10:49:06,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2024-05-12 10:49:06,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:06,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:06,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 10:49:06,483 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 10:49:06,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -381959068, now seen corresponding path program 1 times [2024-05-12 10:49:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:06,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593373872] [2024-05-12 10:49:06,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:06,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:06,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593373872] [2024-05-12 10:49:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593373872] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:06,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:06,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:06,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242153650] [2024-05-12 10:49:06,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:06,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 42 [2024-05-12 10:49:06,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-05-12 10:49:06,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:06,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 42 [2024-05-12 10:49:06,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:06,785 INFO L124 PetriNetUnfolderBase]: 75/263 cut-off events. [2024-05-12 10:49:06,785 INFO L125 PetriNetUnfolderBase]: For 258/261 co-relation queries the response was YES. [2024-05-12 10:49:06,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 263 events. 75/263 cut-off events. For 258/261 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1308 event pairs, 20 based on Foata normal form. 3/254 useless extension candidates. Maximal degree in co-relation 722. Up to 85 conditions per place. [2024-05-12 10:49:06,787 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 28 selfloop transitions, 13 changer transitions 6/60 dead transitions. [2024-05-12 10:49:06,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 354 flow [2024-05-12 10:49:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:49:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:49:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-05-12 10:49:06,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-05-12 10:49:06,789 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 212 flow. Second operand 6 states and 132 transitions. [2024-05-12 10:49:06,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 354 flow [2024-05-12 10:49:06,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:49:06,793 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 233 flow [2024-05-12 10:49:06,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-05-12 10:49:06,794 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-05-12 10:49:06,794 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 233 flow [2024-05-12 10:49:06,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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) [2024-05-12 10:49:06,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:06,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:06,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:49:06,795 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 10:49:06,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1954099647, now seen corresponding path program 1 times [2024-05-12 10:49:06,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:06,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178913631] [2024-05-12 10:49:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:06,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:06,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178913631] [2024-05-12 10:49:06,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178913631] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:06,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:06,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101656016] [2024-05-12 10:49:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:06,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 10:49:06,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 10:49:06,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 10:49:06,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 42 [2024-05-12 10:49:06,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-05-12 10:49:06,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:06,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 42 [2024-05-12 10:49:06,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:06,936 INFO L124 PetriNetUnfolderBase]: 12/71 cut-off events. [2024-05-12 10:49:06,937 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-05-12 10:49:06,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 71 events. 12/71 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 0 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 193. Up to 39 conditions per place. [2024-05-12 10:49:06,938 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 15 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2024-05-12 10:49:06,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 28 transitions, 158 flow [2024-05-12 10:49:06,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:49:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:49:06,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-05-12 10:49:06,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-05-12 10:49:06,939 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 233 flow. Second operand 4 states and 85 transitions. [2024-05-12 10:49:06,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 28 transitions, 158 flow [2024-05-12 10:49:06,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 101 flow, removed 2 selfloop flow, removed 17 redundant places. [2024-05-12 10:49:06,941 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 67 flow [2024-05-12 10:49:06,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=67, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-05-12 10:49:06,942 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-05-12 10:49:06,942 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 67 flow [2024-05-12 10:49:06,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2024-05-12 10:49:06,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:06,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:06,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 10:49:06,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-05-12 10:49:06,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2013462007, now seen corresponding path program 1 times [2024-05-12 10:49:06,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:06,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056412105] [2024-05-12 10:49:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:06,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:06,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:06,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056412105] [2024-05-12 10:49:06,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056412105] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:06,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:49:06,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 10:49:06,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804299445] [2024-05-12 10:49:06,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:06,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 10:49:06,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:06,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 10:49:06,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 10:49:06,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-05-12 10:49:06,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-05-12 10:49:06,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:06,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-05-12 10:49:06,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:07,042 INFO L124 PetriNetUnfolderBase]: 14/65 cut-off events. [2024-05-12 10:49:07,043 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-05-12 10:49:07,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 65 events. 14/65 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 4 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 133. Up to 24 conditions per place. [2024-05-12 10:49:07,043 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-05-12 10:49:07,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 115 flow [2024-05-12 10:49:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 10:49:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 10:49:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-05-12 10:49:07,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-05-12 10:49:07,045 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 67 flow. Second operand 4 states and 79 transitions. [2024-05-12 10:49:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 115 flow [2024-05-12 10:49:07,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 107 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 10:49:07,046 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2024-05-12 10:49:07,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2024-05-12 10:49:07,046 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-05-12 10:49:07,046 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2024-05-12 10:49:07,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2024-05-12 10:49:07,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2024-05-12 10:49:07,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-05-12 10:49:07,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-05-12 10:49:07,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-05-12 10:49:07,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-05-12 10:49:07,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-05-12 10:49:07,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 10:49:07,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:07,056 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:49:07,056 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:49:07,059 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 10:49:07,060 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 10:49:07,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:49:07 BasicIcfg [2024-05-12 10:49:07,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:49:07,061 INFO L158 Benchmark]: Toolchain (without parser) took 3079.04ms. Allocated memory was 182.5MB in the beginning and 260.0MB in the end (delta: 77.6MB). Free memory was 141.2MB in the beginning and 116.7MB in the end (delta: 24.6MB). Peak memory consumption was 101.7MB. Max. memory is 16.1GB. [2024-05-12 10:49:07,061 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:49:07,062 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 109.1MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:49:07,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.02ms. Allocated memory is still 182.5MB. Free memory was 141.2MB in the beginning and 114.9MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-05-12 10:49:07,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.16ms. Allocated memory is still 182.5MB. Free memory was 114.9MB in the beginning and 112.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:49:07,063 INFO L158 Benchmark]: Boogie Preprocessor took 125.02ms. Allocated memory is still 182.5MB. Free memory was 112.7MB in the beginning and 151.1MB in the end (delta: -38.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-05-12 10:49:07,063 INFO L158 Benchmark]: RCFGBuilder took 454.19ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 122.3MB in the end (delta: 28.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-05-12 10:49:07,063 INFO L158 Benchmark]: TraceAbstraction took 1961.10ms. Allocated memory was 182.5MB in the beginning and 260.0MB in the end (delta: 77.6MB). Free memory was 121.2MB in the beginning and 116.7MB in the end (delta: 4.5MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2024-05-12 10:49:07,065 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 109.1MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.02ms. Allocated memory is still 182.5MB. Free memory was 141.2MB in the beginning and 114.9MB in the end (delta: 26.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.16ms. Allocated memory is still 182.5MB. Free memory was 114.9MB in the beginning and 112.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.02ms. Allocated memory is still 182.5MB. Free memory was 112.7MB in the beginning and 151.1MB in the end (delta: -38.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 454.19ms. Allocated memory is still 182.5MB. Free memory was 151.1MB in the beginning and 122.3MB in the end (delta: 28.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1961.10ms. Allocated memory was 182.5MB in the beginning and 260.0MB in the end (delta: 77.6MB). Free memory was 121.2MB in the beginning and 116.7MB in the end (delta: 4.5MB). Peak memory consumption was 84.2MB. 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, 59 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: 1.9s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 484 IncrementalHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 12 mSDtfsCounter, 484 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=5, InterpolantAutomatonStates: 32, 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, 0.8s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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! [2024-05-12 10:49:07,089 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