./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/mutex-meet/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/mutex-meet/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 11:05:38,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:05:38,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 11:05:38,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:05:38,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:05:38,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:05:38,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:05:38,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:05:38,152 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:05:38,156 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:05:38,156 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:05:38,156 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:05:38,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:05:38,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:05:38,158 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:05:38,158 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:05:38,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:05:38,159 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:05:38,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 11:05:38,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:05:38,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:05:38,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:05:38,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:05:38,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:05:38,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:05:38,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:05:38,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:05:38,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:05:38,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:05:38,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:05:38,163 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:05:38,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:05:38,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:05:38,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:05:38,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:05:38,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:05:38,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 11:05:38,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 11:05:38,164 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:05:38,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:05:38,165 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:05:38,165 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:05:38,165 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:05:38,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:05:38,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:05:38,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:05:38,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:05:38,414 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:05:38,414 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:05:38,415 INFO L431 ainManager$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 11:05:39,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:05:39,746 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:05:39,746 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_ok.i [2024-05-12 11:05:39,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65772149/327d0b01af7946b3954ed68d9b47e4f3/FLAGd04a495ca [2024-05-12 11:05:39,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f65772149/327d0b01af7946b3954ed68d9b47e4f3 [2024-05-12 11:05:39,769 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:05:39,770 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:05:39,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/arithmetic_prog_ok.yml/witness.yml [2024-05-12 11:05:39,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:05:39,876 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:05:39,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:05:39,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:05:39,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:05:39,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:05:39" (1/2) ... [2024-05-12 11:05:39,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5296e31f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:05:39, skipping insertion in model container [2024-05-12 11:05:39,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:05:39" (1/2) ... [2024-05-12 11:05:39,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@626edd41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:05:39, skipping insertion in model container [2024-05-12 11:05:39,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:05:39" (2/2) ... [2024-05-12 11:05:39,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5296e31f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:05:39, skipping insertion in model container [2024-05-12 11:05:39,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:05:39" (2/2) ... [2024-05-12 11:05:39,886 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:05:39,920 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:05:39,921 INFO L97 edCorrectnessWitness]: Location invariant before [L914-L914] ((! multithreaded || ((0 <= num && num <= 1) && (num == 0 || num == 1))) && (! multithreaded || (m_locked || ((0 <= num && num <= 1) && (num == 0 || num == 1))))) && (! multithreaded || ((0 <= flag && flag <= 1) && (flag == 0 || flag == 1))) [2024-05-12 11:05:39,921 INFO L97 edCorrectnessWitness]: Location invariant before [L915-L915] ((! multithreaded || ((0 <= num && num <= 1) && (num == 0 || num == 1))) && (! multithreaded || (m_locked || ((0 <= num && num <= 1) && (num == 0 || num == 1))))) && (! multithreaded || ((0 <= flag && flag <= 1) && (flag == 0 || flag == 1))) [2024-05-12 11:05:39,921 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-05-12 11:05:39,922 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:05:39,922 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 1; [2024-05-12 11:05:39,922 INFO L106 edCorrectnessWitness]: ghost_update [L895-L895] m_locked = 0; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L879-L879] m_locked = 1; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L898-L898] m_locked = 0; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L883-L883] m_locked = 0; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 0; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L881-L881] m_locked = 1; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L913-L913] multithreaded = 1; [2024-05-12 11:05:39,923 INFO L106 edCorrectnessWitness]: ghost_update [L893-L893] m_locked = 1; [2024-05-12 11:05:39,960 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:05:40,299 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 11:05:40,302 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:05:40,311 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 11:05:40,398 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 11:05:40,398 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:05:40,442 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:05:40,442 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:05:40 WrapperNode [2024-05-12 11:05:40,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:05:40,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:05:40,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:05:40,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:05:40,448 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,460 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,476 INFO L138 Inliner]: procedures = 244, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 88 [2024-05-12 11:05:40,476 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:05:40,477 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:05:40,477 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:05:40,477 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:05:40,485 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,485 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,488 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,504 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 11:05:40,505 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,505 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,512 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,520 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,522 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,523 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:05:40,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:05:40,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:05:40,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:05:40,538 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 11:05:40" (1/1) ... [2024-05-12 11:05:40,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:05:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:05:40,568 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 11:05:40,571 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 11:05:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 11:05:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 11:05:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 11:05:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 11:05:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 11:05:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-05-12 11:05:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 11:05:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 11:05:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 11:05:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 11:05:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 11:05:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 11:05:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 11:05:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 11:05:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-05-12 11:05:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-05-12 11:05:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:05:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:05:40,603 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 11:05:40,751 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:05:40,753 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:05:40,949 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:05:40,949 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:05:41,150 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:05:41,152 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-05-12 11:05:41,153 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:05:41 BoogieIcfgContainer [2024-05-12 11:05:41,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:05:41,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:05:41,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:05:41,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:05:41,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:05:39" (1/4) ... [2024-05-12 11:05:41,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43321536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:05:41, skipping insertion in model container [2024-05-12 11:05:41,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:05:39" (2/4) ... [2024-05-12 11:05:41,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43321536 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:05:41, skipping insertion in model container [2024-05-12 11:05:41,161 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 11:05:40" (3/4) ... [2024-05-12 11:05:41,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43321536 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:05:41, skipping insertion in model container [2024-05-12 11:05:41,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:05:41" (4/4) ... [2024-05-12 11:05:41,163 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-05-12 11:05:41,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:05:41,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 11:05:41,179 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:05:41,223 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 11:05:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 46 transitions, 106 flow [2024-05-12 11:05:41,288 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-05-12 11:05:41,288 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 11:05:41,291 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 11:05:41,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 46 transitions, 106 flow [2024-05-12 11:05:41,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 92 flow [2024-05-12 11:05:41,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:05:41,313 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;@7ec5430a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:05:41,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 11:05:41,322 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:05:41,322 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-05-12 11:05:41,322 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:05:41,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:41,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 11:05:41,324 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 11:05:41,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1334846596, now seen corresponding path program 1 times [2024-05-12 11:05:41,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:41,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230585054] [2024-05-12 11:05:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:41,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:05:41,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:41,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230585054] [2024-05-12 11:05:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230585054] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:05:41,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:05:41,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 11:05:41,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5899964] [2024-05-12 11:05:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:05:41,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:05:41,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:05:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:05:41,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-05-12 11:05:41,814 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 11:05:41,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:41,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-05-12 11:05:41,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:42,004 INFO L124 PetriNetUnfolderBase]: 707/1168 cut-off events. [2024-05-12 11:05:42,005 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-05-12 11:05:42,009 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 11:05:42,016 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 45 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-05-12 11:05:42,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 226 flow [2024-05-12 11:05:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:05:42,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:05:42,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-05-12 11:05:42,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6376811594202898 [2024-05-12 11:05:42,027 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 92 flow. Second operand 3 states and 88 transitions. [2024-05-12 11:05:42,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 226 flow [2024-05-12 11:05:42,031 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 11:05:42,035 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 109 flow [2024-05-12 11:05:42,037 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 11:05:42,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -1 predicate places. [2024-05-12 11:05:42,041 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 109 flow [2024-05-12 11:05:42,041 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 11:05:42,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:42,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:05:42,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 11:05:42,042 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 11:05:42,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:42,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1119963223, now seen corresponding path program 1 times [2024-05-12 11:05:42,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:42,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528667113] [2024-05-12 11:05:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:42,288 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 11:05:42,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:42,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528667113] [2024-05-12 11:05:42,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528667113] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:05:42,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:05:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:05:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991126446] [2024-05-12 11:05:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:05:42,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:05:42,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:42,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:05:42,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:05:42,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-05-12 11:05:42,296 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 11:05:42,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:42,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-05-12 11:05:42,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:42,481 INFO L124 PetriNetUnfolderBase]: 801/1415 cut-off events. [2024-05-12 11:05:42,482 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-05-12 11:05:42,483 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 11:05:42,487 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 60 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-05-12 11:05:42,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 74 transitions, 314 flow [2024-05-12 11:05:42,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:05:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:05:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-05-12 11:05:42,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-05-12 11:05:42,490 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 109 flow. Second operand 4 states and 116 transitions. [2024-05-12 11:05:42,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 74 transitions, 314 flow [2024-05-12 11:05:42,492 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 11:05:42,493 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 146 flow [2024-05-12 11:05:42,493 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 11:05:42,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-05-12 11:05:42,494 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 146 flow [2024-05-12 11:05:42,494 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 11:05:42,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:42,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:05:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 11:05:42,495 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 11:05:42,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash -578682844, now seen corresponding path program 1 times [2024-05-12 11:05:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:42,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156990126] [2024-05-12 11:05:42,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:42,560 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 11:05:42,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:42,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156990126] [2024-05-12 11:05:42,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156990126] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:05:42,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:05:42,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:05:42,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776835489] [2024-05-12 11:05:42,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:05:42,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:05:42,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:42,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:05:42,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:05:42,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-05-12 11:05:42,565 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 11:05:42,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:42,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-05-12 11:05:42,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:42,756 INFO L124 PetriNetUnfolderBase]: 973/1837 cut-off events. [2024-05-12 11:05:42,756 INFO L125 PetriNetUnfolderBase]: For 944/962 co-relation queries the response was YES. [2024-05-12 11:05:42,759 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 11:05:42,765 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 48 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-05-12 11:05:42,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 61 transitions, 296 flow [2024-05-12 11:05:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:05:42,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:05:42,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-05-12 11:05:42,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-05-12 11:05:42,767 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 146 flow. Second operand 3 states and 95 transitions. [2024-05-12 11:05:42,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 61 transitions, 296 flow [2024-05-12 11:05:42,768 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 11:05:42,769 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 148 flow [2024-05-12 11:05:42,769 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 11:05:42,770 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-05-12 11:05:42,770 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 148 flow [2024-05-12 11:05:42,770 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 11:05:42,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:42,771 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 11:05:42,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 11:05:42,771 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 11:05:42,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:42,772 INFO L85 PathProgramCache]: Analyzing trace with hash 148777803, now seen corresponding path program 1 times [2024-05-12 11:05:42,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:42,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930866608] [2024-05-12 11:05:42,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:42,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:42,825 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 11:05:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930866608] [2024-05-12 11:05:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930866608] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:05:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431686060] [2024-05-12 11:05:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:42,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:05:42,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:05:42,854 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 11:05:42,855 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 11:05:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:42,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 11:05:42,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:05:43,014 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 11:05:43,033 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 11:05:43,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 11:05:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431686060] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:05:43,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 11:05:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-05-12 11:05:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144349890] [2024-05-12 11:05:43,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:05:43,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:05:43,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:43,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:05:43,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:05:43,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-05-12 11:05:43,036 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 11:05:43,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:43,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-05-12 11:05:43,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:43,176 INFO L124 PetriNetUnfolderBase]: 544/1155 cut-off events. [2024-05-12 11:05:43,176 INFO L125 PetriNetUnfolderBase]: For 608/614 co-relation queries the response was YES. [2024-05-12 11:05:43,178 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 11:05:43,182 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 39 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-05-12 11:05:43,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 292 flow [2024-05-12 11:05:43,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:05:43,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:05:43,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-05-12 11:05:43,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-05-12 11:05:43,183 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 148 flow. Second operand 3 states and 93 transitions. [2024-05-12 11:05:43,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 292 flow [2024-05-12 11:05:43,185 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 11:05:43,186 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 162 flow [2024-05-12 11:05:43,186 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 11:05:43,187 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-05-12 11:05:43,187 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 162 flow [2024-05-12 11:05:43,187 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 11:05:43,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:43,188 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 11:05:43,217 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 11:05:43,400 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 11:05:43,401 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 11:05:43,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1542486534, now seen corresponding path program 1 times [2024-05-12 11:05:43,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520028542] [2024-05-12 11:05:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:43,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:43,452 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 11:05:43,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:43,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520028542] [2024-05-12 11:05:43,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520028542] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:05:43,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782781316] [2024-05-12 11:05:43,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:43,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:05:43,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:05:43,469 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 11:05:43,473 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 11:05:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:43,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 11:05:43,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:05:43,611 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 11:05:43,611 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:05:43,637 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 11:05:43,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782781316] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:05:43,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:05:43,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-05-12 11:05:43,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243749165] [2024-05-12 11:05:43,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:05:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 11:05:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 11:05:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 11:05:43,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-05-12 11:05:43,641 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 11:05:43,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:43,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-05-12 11:05:43,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:43,933 INFO L124 PetriNetUnfolderBase]: 1305/2553 cut-off events. [2024-05-12 11:05:43,933 INFO L125 PetriNetUnfolderBase]: For 1779/1812 co-relation queries the response was YES. [2024-05-12 11:05:43,937 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 11:05:43,943 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 88 selfloop transitions, 6 changer transitions 6/110 dead transitions. [2024-05-12 11:05:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 110 transitions, 608 flow [2024-05-12 11:05:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:05:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:05:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-05-12 11:05:43,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-05-12 11:05:43,946 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 162 flow. Second operand 6 states and 189 transitions. [2024-05-12 11:05:43,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 110 transitions, 608 flow [2024-05-12 11:05:43,949 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 11:05:43,951 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 200 flow [2024-05-12 11:05:43,951 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 11:05:43,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-05-12 11:05:43,953 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 200 flow [2024-05-12 11:05:43,953 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 11:05:43,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:43,953 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 11:05:43,984 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 11:05:44,164 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 11:05:44,164 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 11:05:44,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678402, now seen corresponding path program 1 times [2024-05-12 11:05:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:44,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661503863] [2024-05-12 11:05:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:44,451 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-05-12 11:05:44,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661503863] [2024-05-12 11:05:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661503863] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:05:44,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92174647] [2024-05-12 11:05:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:44,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:05:44,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:05:44,453 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 11:05:44,495 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 11:05:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:44,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 21 conjunts are in the unsatisfiable core [2024-05-12 11:05:44,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:05:44,655 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 11:05:44,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:05:44,857 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 11:05:44,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92174647] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:05:44,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:05:44,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2024-05-12 11:05:44,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79400819] [2024-05-12 11:05:44,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:05:44,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:05:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:05:44,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:05:44,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-05-12 11:05:44,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 200 flow. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:05:44,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:44,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-05-12 11:05:44,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:45,122 INFO L124 PetriNetUnfolderBase]: 1135/2292 cut-off events. [2024-05-12 11:05:45,123 INFO L125 PetriNetUnfolderBase]: For 2603/2603 co-relation queries the response was YES. [2024-05-12 11:05:45,126 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 11:05:45,131 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 57 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-05-12 11:05:45,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 410 flow [2024-05-12 11:05:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:05:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:05:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-05-12 11:05:45,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:05:45,133 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 200 flow. Second operand 5 states and 115 transitions. [2024-05-12 11:05:45,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 410 flow [2024-05-12 11:05:45,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 11:05:45,136 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 200 flow [2024-05-12 11:05:45,137 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-05-12 11:05:45,137 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-05-12 11:05:45,137 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 200 flow [2024-05-12 11:05:45,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:05:45,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:05:45,138 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 11:05:45,162 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 11:05:45,349 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 11:05:45,350 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 11:05:45,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:05:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2007952244, now seen corresponding path program 1 times [2024-05-12 11:05:45,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:05:45,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568097115] [2024-05-12 11:05:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:45,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:05:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:45,720 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 11:05:45,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:05:45,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568097115] [2024-05-12 11:05:45,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568097115] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 11:05:45,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866262918] [2024-05-12 11:05:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:05:45,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 11:05:45,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:05:45,722 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 11:05:45,751 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 11:05:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:05:45,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 23 conjunts are in the unsatisfiable core [2024-05-12 11:05:45,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 11:05:46,103 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 11:05:46,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 11:05:46,405 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 11:05:46,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866262918] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 11:05:46,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 11:05:46,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-05-12 11:05:46,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852716859] [2024-05-12 11:05:46,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 11:05:46,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-05-12 11:05:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:05:46,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-05-12 11:05:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-05-12 11:05:46,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-05-12 11:05:46,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 200 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 11:05:46,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:05:46,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-05-12 11:05:46,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:05:47,762 INFO L124 PetriNetUnfolderBase]: 1284/2541 cut-off events. [2024-05-12 11:05:47,762 INFO L125 PetriNetUnfolderBase]: For 2933/2960 co-relation queries the response was YES. [2024-05-12 11:05:47,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 2541 events. 1284/2541 cut-off events. For 2933/2960 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 11940 event pairs, 69 based on Foata normal form. 72/2611 useless extension candidates. Maximal degree in co-relation 4702. Up to 437 conditions per place. [2024-05-12 11:05:47,767 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 0 selfloop transitions, 0 changer transitions 159/159 dead transitions. [2024-05-12 11:05:47,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 159 transitions, 879 flow [2024-05-12 11:05:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:05:47,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:05:47,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 308 transitions. [2024-05-12 11:05:47,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-05-12 11:05:47,769 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 200 flow. Second operand 12 states and 308 transitions. [2024-05-12 11:05:47,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 159 transitions, 879 flow [2024-05-12 11:05:47,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 159 transitions, 839 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 11:05:47,775 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-05-12 11:05:47,775 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 11:05:47,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-05-12 11:05:47,776 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-05-12 11:05:47,777 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 11:05:47,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 11:05:47,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 11:05:47,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 11:05:47,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 11:05:47,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 11:05:47,798 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 11:05:47,995 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 11:05:47,996 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:05:47,999 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 11:05:47,999 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 11:05:48,002 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 11:05:48,003 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 11:05:48,003 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 11:05:48 BasicIcfg [2024-05-12 11:05:48,003 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 11:05:48,005 INFO L158 Benchmark]: Toolchain (without parser) took 8128.38ms. Allocated memory was 211.8MB in the beginning and 339.7MB in the end (delta: 127.9MB). Free memory was 133.4MB in the beginning and 218.3MB in the end (delta: -84.9MB). Peak memory consumption was 167.8MB. Max. memory is 16.1GB. [2024-05-12 11:05:48,006 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 144.7MB. Free memory is still 108.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:05:48,006 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 211.8MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:05:48,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.80ms. Allocated memory is still 211.8MB. Free memory was 132.8MB in the beginning and 97.7MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-05-12 11:05:48,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.38ms. Allocated memory is still 211.8MB. Free memory was 97.7MB in the beginning and 95.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 11:05:48,007 INFO L158 Benchmark]: Boogie Preprocessor took 59.52ms. Allocated memory is still 211.8MB. Free memory was 95.0MB in the beginning and 92.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 11:05:48,007 INFO L158 Benchmark]: RCFGBuilder took 616.44ms. Allocated memory is still 211.8MB. Free memory was 92.3MB in the beginning and 155.4MB in the end (delta: -63.1MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2024-05-12 11:05:48,007 INFO L158 Benchmark]: TraceAbstraction took 6848.38ms. Allocated memory was 211.8MB in the beginning and 339.7MB in the end (delta: 127.9MB). Free memory was 154.4MB in the beginning and 218.3MB in the end (delta: -63.9MB). Peak memory consumption was 188.1MB. Max. memory is 16.1GB. [2024-05-12 11:05:48,008 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 144.7MB. Free memory is still 108.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 211.8MB. Free memory is still 137.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.80ms. Allocated memory is still 211.8MB. Free memory was 132.8MB in the beginning and 97.7MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.38ms. Allocated memory is still 211.8MB. Free memory was 97.7MB in the beginning and 95.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.52ms. Allocated memory is still 211.8MB. Free memory was 95.0MB in the beginning and 92.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 616.44ms. Allocated memory is still 211.8MB. Free memory was 92.3MB in the beginning and 155.4MB in the end (delta: -63.1MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6848.38ms. Allocated memory was 211.8MB in the beginning and 339.7MB in the end (delta: 127.9MB). Free memory was 154.4MB in the beginning and 218.3MB in the end (delta: -63.9MB). Peak memory consumption was 188.1MB. 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: 6.7s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 498 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 479 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3396 IncrementalHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 9 mSDtfsCounter, 3396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 353 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=5, InterpolantAutomatonStates: 36, 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, 2.0s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 2799 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1331 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 191/464 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 11:05:48,040 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