./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/arithmetic_prog_ok.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/pthread-deagle/arithmetic_prog_ok.i ./goblint.2024-05-07_14-17-48.files/protection/arithmetic_prog_ok.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 12:56:19,432 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:56:19,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:56:19,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:56:19,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:56:19,553 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:56:19,554 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:56:19,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:56:19,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:56:19,559 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:56:19,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:56:19,560 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:56:19,561 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:56:19,562 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:56:19,562 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:56:19,562 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:56:19,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:56:19,563 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:56:19,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:56:19,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:56:19,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:56:19,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:56:19,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:56:19,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:56:19,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:56:19,565 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:56:19,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:56:19,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:56:19,567 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:56:19,567 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:56:19,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:56:19,568 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:56:19,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:19,569 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:56:19,569 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:56:19,569 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:56:19,569 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:56:19,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:56:19,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:56:19,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:56:19,570 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:56:19,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:56:19,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:56:19,571 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:56:19,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:56:19,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:56:19,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:56:19,913 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:56:19,914 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:56:19,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-05-12 12:56:21,105 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:56:21,419 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:56:21,422 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-05-12 12:56:21,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70573be6f/97af6ba381674d54bb01f90530b8b4c7/FLAG990b03001 [2024-05-12 12:56:21,466 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70573be6f/97af6ba381674d54bb01f90530b8b4c7 [2024-05-12 12:56:21,468 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:56:21,468 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:56:21,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/arithmetic_prog_ok.yml/witness.yml [2024-05-12 12:56:21,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:56:21,589 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:56:21,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:21,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:56:21,595 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:56:21,596 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:21" (1/2) ... [2024-05-12 12:56:21,597 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c34d650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:21, skipping insertion in model container [2024-05-12 12:56:21,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:21" (1/2) ... [2024-05-12 12:56:21,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1df5498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:21, skipping insertion in model container [2024-05-12 12:56:21,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:21" (2/2) ... [2024-05-12 12:56:21,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c34d650 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:21, skipping insertion in model container [2024-05-12 12:56:21,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:21" (2/2) ... [2024-05-12 12:56:21,603 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:56:21,648 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:56:21,649 INFO L97 edCorrectnessWitness]: Location invariant before [L915-L915] (! multithreaded || ((0 <= flag && flag <= 1) && (flag == 0 || flag == 1))) && (! multithreaded || (0 <= num && num <= 1)) [2024-05-12 12:56:21,650 INFO L97 edCorrectnessWitness]: Location invariant before [L914-L914] (! multithreaded || ((0 <= flag && flag <= 1) && (flag == 0 || flag == 1))) && (! multithreaded || (0 <= num && num <= 1)) [2024-05-12 12:56:21,650 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:56:21,650 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-05-12 12:56:21,650 INFO L106 edCorrectnessWitness]: ghost_update [L883-L883] m_locked = 0; [2024-05-12 12:56:21,651 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 0; [2024-05-12 12:56:21,651 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 1; [2024-05-12 12:56:21,652 INFO L106 edCorrectnessWitness]: ghost_update [L898-L898] m_locked = 0; [2024-05-12 12:56:21,652 INFO L106 edCorrectnessWitness]: ghost_update [L893-L893] m_locked = 1; [2024-05-12 12:56:21,652 INFO L106 edCorrectnessWitness]: ghost_update [L913-L913] multithreaded = 1; [2024-05-12 12:56:21,652 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 1; [2024-05-12 12:56:21,652 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 0; [2024-05-12 12:56:21,652 INFO L106 edCorrectnessWitness]: ghost_update [L879-L879] m_locked = 1; [2024-05-12 12:56:21,698 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:56:22,143 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-05-12 12:56:22,148 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:22,159 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:22,248 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-05-12 12:56:22,249 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:22,304 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:56:22,305 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22 WrapperNode [2024-05-12 12:56:22,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:22,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:22,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:56:22,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:56:22,313 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 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,343 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 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,374 INFO L138 Inliner]: procedures = 244, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 88 [2024-05-12 12:56:22,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:22,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:56:22,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:56:22,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:56:22,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,399 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,419 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 1, 8, 2, 2]. 53 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8, 0, 0]. The 2 writes are split as follows [0, 0, 0, 1, 1]. [2024-05-12 12:56:22,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,471 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:56:22,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:56:22,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:56:22,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:56:22,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (1/1) ... [2024-05-12 12:56:22,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:22,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:22,505 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 12:56:22,534 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 12:56:22,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:56:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:56:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-05-12 12:56:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-05-12 12:56:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-05-12 12:56:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-05-12 12:56:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-05-12 12:56:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:56:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:56:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:56:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:56:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:56:22,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 12:56:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 12:56:22,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 12:56:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 12:56:22,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 12:56:22,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:56:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:56:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:56:22,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:56:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 12:56:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:56:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:56:22,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:56:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:56:22,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:56:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:56:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 12:56:22,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:56:22,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:56:22,563 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 12:56:22,704 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:56:22,706 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:56:22,999 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:56:23,001 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:56:23,203 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:56:23,203 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-05-12 12:56:23,203 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:23 BoogieIcfgContainer [2024-05-12 12:56:23,203 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:56:23,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:56:23,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:56:23,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:56:23,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:56:21" (1/4) ... [2024-05-12 12:56:23,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4254562b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:56:23, skipping insertion in model container [2024-05-12 12:56:23,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:21" (2/4) ... [2024-05-12 12:56:23,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4254562b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:23, skipping insertion in model container [2024-05-12 12:56:23,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:22" (3/4) ... [2024-05-12 12:56:23,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4254562b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:23, skipping insertion in model container [2024-05-12 12:56:23,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:23" (4/4) ... [2024-05-12 12:56:23,211 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-05-12 12:56:23,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:56:23,228 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 12:56:23,228 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:56:23,276 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 12:56:23,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 46 transitions, 106 flow [2024-05-12 12:56:23,352 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-05-12 12:56:23,352 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 12:56:23,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 6/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 31. Up to 3 conditions per place. [2024-05-12 12:56:23,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 46 transitions, 106 flow [2024-05-12 12:56:23,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 92 flow [2024-05-12 12:56:23,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:56:23,387 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;@534bdee1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:56:23,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 12:56:23,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:56:23,395 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-05-12 12:56:23,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:56:23,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:23,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:56:23,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:23,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1334846596, now seen corresponding path program 1 times [2024-05-12 12:56:23,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:23,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870227886] [2024-05-12 12:56:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:23,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:23,835 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 12:56:23,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870227886] [2024-05-12 12:56:23,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870227886] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:23,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:23,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:56:23,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755247946] [2024-05-12 12:56:23,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:23,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:23,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:23,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-05-12 12:56:23,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 12:56:23,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:23,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-05-12 12:56:23,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:24,212 INFO L124 PetriNetUnfolderBase]: 707/1168 cut-off events. [2024-05-12 12:56:24,213 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-05-12 12:56:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 1168 events. 707/1168 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5132 event pairs, 216 based on Foata normal form. 16/1050 useless extension candidates. Maximal degree in co-relation 2134. Up to 910 conditions per place. [2024-05-12 12:56:24,226 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 45 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-05-12 12:56:24,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 226 flow [2024-05-12 12:56:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-05-12 12:56:24,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-05-12 12:56:24,242 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 92 flow. Second operand 3 states and 88 transitions. [2024-05-12 12:56:24,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 226 flow [2024-05-12 12:56:24,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 56 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-05-12 12:56:24,253 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 109 flow [2024-05-12 12:56:24,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-05-12 12:56:24,259 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2024-05-12 12:56:24,259 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 109 flow [2024-05-12 12:56:24,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 12:56:24,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:24,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:24,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:56:24,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:24,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:24,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1119963223, now seen corresponding path program 1 times [2024-05-12 12:56:24,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:24,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917462093] [2024-05-12 12:56:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:24,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:24,447 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 12:56:24,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:24,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917462093] [2024-05-12 12:56:24,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917462093] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:24,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:24,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:56:24,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027826240] [2024-05-12 12:56:24,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:24,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:56:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:56:24,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:56:24,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-05-12 12:56:24,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 12:56:24,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:24,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-05-12 12:56:24,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:24,732 INFO L124 PetriNetUnfolderBase]: 801/1415 cut-off events. [2024-05-12 12:56:24,732 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-05-12 12:56:24,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 1415 events. 801/1415 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6532 event pairs, 260 based on Foata normal form. 189/1586 useless extension candidates. Maximal degree in co-relation 865. Up to 622 conditions per place. [2024-05-12 12:56:24,741 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 60 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-05-12 12:56:24,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 314 flow [2024-05-12 12:56:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:56:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:56:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-05-12 12:56:24,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-05-12 12:56:24,745 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 109 flow. Second operand 4 states and 116 transitions. [2024-05-12 12:56:24,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 314 flow [2024-05-12 12:56:24,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:24,749 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 146 flow [2024-05-12 12:56:24,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-05-12 12:56:24,750 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-05-12 12:56:24,751 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 146 flow [2024-05-12 12:56:24,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 12:56:24,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:24,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:24,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:56:24,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:24,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:24,753 INFO L85 PathProgramCache]: Analyzing trace with hash -578682844, now seen corresponding path program 1 times [2024-05-12 12:56:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:24,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988180909] [2024-05-12 12:56:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:24,834 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 12:56:24,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:24,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988180909] [2024-05-12 12:56:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988180909] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:24,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:56:24,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:56:24,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472989527] [2024-05-12 12:56:24,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:24,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:24,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:24,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:24,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:56:24,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-05-12 12:56:24,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 12:56:24,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:24,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-05-12 12:56:24,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:25,123 INFO L124 PetriNetUnfolderBase]: 973/1837 cut-off events. [2024-05-12 12:56:25,123 INFO L125 PetriNetUnfolderBase]: For 944/962 co-relation queries the response was YES. [2024-05-12 12:56:25,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4139 conditions, 1837 events. 973/1837 cut-off events. For 944/962 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9301 event pairs, 463 based on Foata normal form. 46/1857 useless extension candidates. Maximal degree in co-relation 841. Up to 987 conditions per place. [2024-05-12 12:56:25,134 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 48 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-05-12 12:56:25,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 296 flow [2024-05-12 12:56:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-05-12 12:56:25,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-05-12 12:56:25,136 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 146 flow. Second operand 3 states and 95 transitions. [2024-05-12 12:56:25,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 296 flow [2024-05-12 12:56:25,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:25,139 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 148 flow [2024-05-12 12:56:25,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2024-05-12 12:56:25,140 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-05-12 12:56:25,140 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 148 flow [2024-05-12 12:56:25,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 12:56:25,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:25,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:25,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:56:25,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:25,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash 148777803, now seen corresponding path program 1 times [2024-05-12 12:56:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:25,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491437343] [2024-05-12 12:56:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:25,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:25,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:25,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:25,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491437343] [2024-05-12 12:56:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491437343] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:56:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427451462] [2024-05-12 12:56:25,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:25,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:25,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:25,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:56:25,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 12:56:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:25,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 12:56:25,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:25,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-05-12 12:56:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:25,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 12:56:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427451462] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:56:25,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 12:56:25,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-05-12 12:56:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953577185] [2024-05-12 12:56:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:56:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:56:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:56:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:56:25,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-05-12 12:56:25,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 12:56:25,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:25,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-05-12 12:56:25,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:25,627 INFO L124 PetriNetUnfolderBase]: 544/1155 cut-off events. [2024-05-12 12:56:25,627 INFO L125 PetriNetUnfolderBase]: For 608/614 co-relation queries the response was YES. [2024-05-12 12:56:25,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 1155 events. 544/1155 cut-off events. For 608/614 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5367 event pairs, 219 based on Foata normal form. 69/1217 useless extension candidates. Maximal degree in co-relation 475. Up to 489 conditions per place. [2024-05-12 12:56:25,634 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 39 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-05-12 12:56:25,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 292 flow [2024-05-12 12:56:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:56:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:56:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-05-12 12:56:25,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-05-12 12:56:25,637 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 148 flow. Second operand 3 states and 93 transitions. [2024-05-12 12:56:25,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 292 flow [2024-05-12 12:56:25,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 58 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:25,643 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 162 flow [2024-05-12 12:56:25,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-05-12 12:56:25,644 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-05-12 12:56:25,644 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 162 flow [2024-05-12 12:56:25,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 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 12:56:25,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:25,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:25,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:25,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:25,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:25,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:25,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1542486534, now seen corresponding path program 1 times [2024-05-12 12:56:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:25,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328068368] [2024-05-12 12:56:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:25,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:25,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328068368] [2024-05-12 12:56:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328068368] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:56:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801355516] [2024-05-12 12:56:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:25,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:25,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:25,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:56:25,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 12:56:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:26,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 12:56:26,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:26,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:56:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:26,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801355516] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:56:26,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:56:26,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-05-12 12:56:26,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624869158] [2024-05-12 12:56:26,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:56:26,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:56:26,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:56:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:56:26,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-05-12 12:56:26,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 12:56:26,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:26,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-05-12 12:56:26,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:26,565 INFO L124 PetriNetUnfolderBase]: 1305/2553 cut-off events. [2024-05-12 12:56:26,565 INFO L125 PetriNetUnfolderBase]: For 1779/1812 co-relation queries the response was YES. [2024-05-12 12:56:26,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6385 conditions, 2553 events. 1305/2553 cut-off events. For 1779/1812 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 11882 event pairs, 115 based on Foata normal form. 162/2711 useless extension candidates. Maximal degree in co-relation 1381. Up to 519 conditions per place. [2024-05-12 12:56:26,579 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 88 selfloop transitions, 6 changer transitions 6/110 dead transitions. [2024-05-12 12:56:26,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 110 transitions, 608 flow [2024-05-12 12:56:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:56:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:56:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-05-12 12:56:26,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-05-12 12:56:26,581 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 162 flow. Second operand 6 states and 189 transitions. [2024-05-12 12:56:26,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 110 transitions, 608 flow [2024-05-12 12:56:26,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 110 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:26,585 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 200 flow [2024-05-12 12:56:26,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-05-12 12:56:26,586 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-05-12 12:56:26,586 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 200 flow [2024-05-12 12:56:26,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 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 12:56:26,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:26,586 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:26,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:26,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:26,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678402, now seen corresponding path program 1 times [2024-05-12 12:56:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610390976] [2024-05-12 12:56:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-05-12 12:56:27,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610390976] [2024-05-12 12:56:27,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610390976] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:56:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43300043] [2024-05-12 12:56:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:27,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:27,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:27,202 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:56:27,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 12:56:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:27,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 21 conjunts are in the unsatisfiable core [2024-05-12 12:56:27,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-05-12 12:56:27,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:56:27,677 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-05-12 12:56:27,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43300043] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:56:27,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:56:27,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 12 [2024-05-12 12:56:27,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930331973] [2024-05-12 12:56:27,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:56:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-05-12 12:56:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-05-12 12:56:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-05-12 12:56:27,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-05-12 12:56:27,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 200 flow. Second operand has 13 states, 13 states have (on average 16.76923076923077) internal successors, (218), 13 states have internal predecessors, (218), 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 12:56:27,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:27,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-05-12 12:56:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:28,071 INFO L124 PetriNetUnfolderBase]: 1135/2292 cut-off events. [2024-05-12 12:56:28,071 INFO L125 PetriNetUnfolderBase]: For 2603/2603 co-relation queries the response was YES. [2024-05-12 12:56:28,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5941 conditions, 2292 events. 1135/2292 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10654 event pairs, 433 based on Foata normal form. 26/2310 useless extension candidates. Maximal degree in co-relation 3787. Up to 984 conditions per place. [2024-05-12 12:56:28,083 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 56 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-05-12 12:56:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 410 flow [2024-05-12 12:56:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:56:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:56:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2024-05-12 12:56:28,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-05-12 12:56:28,085 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 200 flow. Second operand 6 states and 126 transitions. [2024-05-12 12:56:28,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 410 flow [2024-05-12 12:56:28,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 12:56:28,089 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 202 flow [2024-05-12 12:56:28,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2024-05-12 12:56:28,090 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2024-05-12 12:56:28,090 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 202 flow [2024-05-12 12:56:28,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.76923076923077) internal successors, (218), 13 states have internal predecessors, (218), 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 12:56:28,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:28,091 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:28,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:28,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:28,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:28,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2007952244, now seen corresponding path program 1 times [2024-05-12 12:56:28,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:28,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351041313] [2024-05-12 12:56:28,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:28,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:28,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:56:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351041313] [2024-05-12 12:56:28,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351041313] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 12:56:28,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820133707] [2024-05-12 12:56:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:28,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:28,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:28,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 12:56:28,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 12:56:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:56:29,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 23 conjunts are in the unsatisfiable core [2024-05-12 12:56:29,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 12:56:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:29,289 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 12:56:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:56:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820133707] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 12:56:29,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 12:56:29,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-05-12 12:56:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364661750] [2024-05-12 12:56:29,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 12:56:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-05-12 12:56:29,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:56:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-05-12 12:56:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-05-12 12:56:30,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-05-12 12:56:30,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 202 flow. Second operand has 31 states, 31 states have (on average 17.483870967741936) internal successors, (542), 31 states have internal predecessors, (542), 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 12:56:30,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:56:30,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-05-12 12:56:30,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:56:31,503 INFO L124 PetriNetUnfolderBase]: 1284/2541 cut-off events. [2024-05-12 12:56:31,504 INFO L125 PetriNetUnfolderBase]: For 2972/2999 co-relation queries the response was YES. [2024-05-12 12:56:31,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6683 conditions, 2541 events. 1284/2541 cut-off events. For 2972/2999 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 11927 event pairs, 72 based on Foata normal form. 72/2611 useless extension candidates. Maximal degree in co-relation 4703. Up to 437 conditions per place. [2024-05-12 12:56:31,515 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2024-05-12 12:56:31,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 159 transitions, 881 flow [2024-05-12 12:56:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 12:56:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 12:56:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-05-12 12:56:31,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-05-12 12:56:31,520 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 202 flow. Second operand 12 states and 308 transitions. [2024-05-12 12:56:31,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 159 transitions, 881 flow [2024-05-12 12:56:31,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 159 transitions, 839 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 12:56:31,527 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-05-12 12:56:31,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-05-12 12:56:31,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-05-12 12:56:31,528 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-05-12 12:56:31,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 17.483870967741936) internal successors, (542), 31 states have internal predecessors, (542), 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 12:56:31,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 12:56:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 12:56:31,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 12:56:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 12:56:31,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 12:56:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 12:56:31,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 12:56:31,748 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:31,751 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:56:31,751 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:56:31,755 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 12:56:31,755 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 12:56:31,756 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:56:31 BasicIcfg [2024-05-12 12:56:31,756 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:56:31,757 INFO L158 Benchmark]: Toolchain (without parser) took 10167.35ms. Allocated memory was 151.0MB in the beginning and 260.0MB in the end (delta: 109.1MB). Free memory was 70.7MB in the beginning and 76.1MB in the end (delta: -5.4MB). Peak memory consumption was 111.4MB. Max. memory is 16.1GB. [2024-05-12 12:56:31,757 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:31,757 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:31,757 INFO L158 Benchmark]: CACSL2BoogieTranslator took 714.58ms. Allocated memory is still 151.0MB. Free memory was 70.2MB in the beginning and 100.5MB in the end (delta: -30.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-05-12 12:56:31,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.99ms. Allocated memory is still 151.0MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:31,758 INFO L158 Benchmark]: Boogie Preprocessor took 96.51ms. Allocated memory is still 151.0MB. Free memory was 98.4MB in the beginning and 95.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:31,758 INFO L158 Benchmark]: RCFGBuilder took 728.19ms. Allocated memory is still 151.0MB. Free memory was 95.0MB in the beginning and 114.3MB in the end (delta: -19.3MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:31,758 INFO L158 Benchmark]: TraceAbstraction took 8551.23ms. Allocated memory was 151.0MB in the beginning and 260.0MB in the end (delta: 109.1MB). Free memory was 114.3MB in the beginning and 76.1MB in the end (delta: 38.2MB). Peak memory consumption was 153.5MB. Max. memory is 16.1GB. [2024-05-12 12:56:31,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 714.58ms. Allocated memory is still 151.0MB. Free memory was 70.2MB in the beginning and 100.5MB in the end (delta: -30.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.99ms. Allocated memory is still 151.0MB. Free memory was 100.5MB in the beginning and 98.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.51ms. Allocated memory is still 151.0MB. Free memory was 98.4MB in the beginning and 95.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 728.19ms. Allocated memory is still 151.0MB. Free memory was 95.0MB in the beginning and 114.3MB in the end (delta: -19.3MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8551.23ms. Allocated memory was 151.0MB in the beginning and 260.0MB in the end (delta: 109.1MB). Free memory was 114.3MB in the beginning and 76.1MB in the end (delta: 38.2MB). Peak memory consumption was 153.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 914]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 915]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 919]: 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 5 procedures, 63 locations, 5 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: 8.4s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 553 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 535 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3339 IncrementalHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 9 mSDtfsCounter, 3339 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=6, InterpolantAutomatonStates: 37, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 3019 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1326 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 204/464 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:56:31,786 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