./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/stack-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/stack-1.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/stack-1.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:50:56,134 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:50:56,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:50:56,202 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:50:56,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:50:56,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:50:56,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:50:56,230 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:50:56,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:50:56,235 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:50:56,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:50:56,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:50:56,237 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:50:56,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:50:56,238 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:50:56,238 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:50:56,238 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:50:56,239 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:50:56,239 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:50:56,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:50:56,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:50:56,240 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:50:56,240 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:50:56,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:50:56,240 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:50:56,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:50:56,241 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:50:56,241 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:50:56,241 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:50:56,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:50:56,242 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:50:56,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:50:56,242 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:50:56,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:50:56,243 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:50:56,243 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:50:56,243 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:50:56,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:50:56,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:50:56,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:50:56,244 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:50:56,244 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:50:56,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:50:56,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:50:56,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:50:56,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:50:56,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:50:56,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:50:56,513 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:50:56,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2024-06-14 13:50:57,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:50:58,017 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:50:58,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2024-06-14 13:50:58,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0e9db72/883fab538ddb41b780a99bed5903cbae/FLAG2c5e96677 [2024-06-14 13:50:58,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0e9db72/883fab538ddb41b780a99bed5903cbae [2024-06-14 13:50:58,071 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:50:58,071 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:50:58,072 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/stack-1.yml/witness.yml [2024-06-14 13:50:58,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:50:58,191 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:50:58,193 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:50:58,193 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:50:58,197 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:50:58,198 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:50:58" (1/2) ... [2024-06-14 13:50:58,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b21b7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:50:58, skipping insertion in model container [2024-06-14 13:50:58,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:50:58" (1/2) ... [2024-06-14 13:50:58,201 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@367f011b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:50:58, skipping insertion in model container [2024-06-14 13:50:58,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:50:58" (2/2) ... [2024-06-14 13:50:58,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b21b7cd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58, skipping insertion in model container [2024-06-14 13:50:58,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:50:58" (2/2) ... [2024-06-14 13:50:58,204 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:50:58,252 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:50:58,254 INFO L97 edCorrectnessWitness]: Location invariant before [L1023-L1023] ((! multithreaded || (m_locked || flag == (_Bool)0)) && (! multithreaded || (m_locked || ((0LL - (long long )flag) + (long long )top >= 0LL && (long long )flag + (long long )top >= 0LL)))) && (! multithreaded || flag == (_Bool)0) [2024-06-14 13:50:58,254 INFO L97 edCorrectnessWitness]: Location invariant before [L1024-L1024] ((! multithreaded || (m_locked || flag == (_Bool)0)) && (! multithreaded || (m_locked || ((0LL - (long long )flag) + (long long )top >= 0LL && (long long )flag + (long long )top >= 0LL)))) && (! multithreaded || flag == (_Bool)0) [2024-06-14 13:50:58,254 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-14 13:50:58,254 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:50:58,255 INFO L106 edCorrectnessWitness]: ghost_update [L994-L994] m_locked = 1; [2024-06-14 13:50:58,255 INFO L106 edCorrectnessWitness]: ghost_update [L1014-L1014] m_locked = 0; [2024-06-14 13:50:58,256 INFO L106 edCorrectnessWitness]: ghost_update [L999-L999] m_locked = 0; [2024-06-14 13:50:58,256 INFO L106 edCorrectnessWitness]: ghost_update [L1022-L1022] multithreaded = 1; [2024-06-14 13:50:58,256 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-14 13:50:58,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:50:58,800 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:50:58,812 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 [2024-06-14 13:50:58,910 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:50:58,969 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:50:58,970 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58 WrapperNode [2024-06-14 13:50:58,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:50:58,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:50:58,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:50:58,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:50:58,977 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 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:58,996 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 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,017 INFO L138 Inliner]: procedures = 277, calls = 36, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 164 [2024-06-14 13:50:59,018 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:50:59,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:50:59,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:50:59,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:50:59,027 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,030 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,054 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 5, 7]. 50 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 1 writes are split as follows [0, 0, 1]. [2024-06-14 13:50:59,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:50:59,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:50:59,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:50:59,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:50:59,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (1/1) ... [2024-06-14 13:50:59,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:50:59,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:50:59,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 13:50:59,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 13:50:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-14 13:50:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-14 13:50:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-14 13:50:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-14 13:50:59,160 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-14 13:50:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:50:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:50:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 13:50:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-14 13:50:59,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:50:59,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:50:59,162 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:50:59,302 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:50:59,303 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:50:59,514 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:50:59,514 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:50:59,726 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:50:59,727 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-14 13:50:59,728 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:50:59 BoogieIcfgContainer [2024-06-14 13:50:59,728 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:50:59,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:50:59,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:50:59,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:50:59,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:50:58" (1/4) ... [2024-06-14 13:50:59,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33adea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:50:59, skipping insertion in model container [2024-06-14 13:50:59,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:50:58" (2/4) ... [2024-06-14 13:50:59,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33adea72 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:50:59, skipping insertion in model container [2024-06-14 13:50:59,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:50:58" (3/4) ... [2024-06-14 13:50:59,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33adea72 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:50:59, skipping insertion in model container [2024-06-14 13:50:59,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:50:59" (4/4) ... [2024-06-14 13:50:59,738 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2024-06-14 13:50:59,756 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:50:59,756 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:50:59,756 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:50:59,807 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-14 13:50:59,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 74 flow [2024-06-14 13:50:59,862 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-06-14 13:50:59,863 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-14 13:50:59,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 2/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-14 13:50:59,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 74 flow [2024-06-14 13:50:59,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 61 flow [2024-06-14 13:50:59,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:50:59,891 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;@15f4672c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:50:59,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:50:59,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:50:59,899 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:50:59,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:50:59,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:50:59,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:50:59,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:50:59,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:50:59,905 INFO L85 PathProgramCache]: Analyzing trace with hash 217308725, now seen corresponding path program 1 times [2024-06-14 13:50:59,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:50:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841979751] [2024-06-14 13:50:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:50:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:00,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841979751] [2024-06-14 13:51:00,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841979751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:51:00,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085013763] [2024-06-14 13:51:00,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:00,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:51:00,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:00,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:51:00,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:51:00,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:51:00,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:00,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:00,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:51:00,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:00,479 INFO L124 PetriNetUnfolderBase]: 267/483 cut-off events. [2024-06-14 13:51:00,479 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-06-14 13:51:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 971 conditions, 483 events. 267/483 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1954 event pairs, 95 based on Foata normal form. 24/500 useless extension candidates. Maximal degree in co-relation 896. Up to 308 conditions per place. [2024-06-14 13:51:00,484 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 32 selfloop transitions, 2 changer transitions 3/40 dead transitions. [2024-06-14 13:51:00,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 169 flow [2024-06-14 13:51:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:51:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:51:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-14 13:51:00,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-14 13:51:00,496 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 61 flow. Second operand 3 states and 54 transitions. [2024-06-14 13:51:00,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 169 flow [2024-06-14 13:51:00,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 13:51:00,502 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 67 flow [2024-06-14 13:51:00,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-06-14 13:51:00,507 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-06-14 13:51:00,507 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 67 flow [2024-06-14 13:51:00,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:00,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:00,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:00,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:51:00,508 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:00,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:00,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1748362925, now seen corresponding path program 1 times [2024-06-14 13:51:00,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:00,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248229252] [2024-06-14 13:51:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:00,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:00,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:00,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248229252] [2024-06-14 13:51:00,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248229252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:00,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:00,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:51:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643086305] [2024-06-14 13:51:00,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:00,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:51:00,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:00,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:51:00,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:51:00,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:51:00,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:00,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:00,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:51:00,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:00,784 INFO L124 PetriNetUnfolderBase]: 315/572 cut-off events. [2024-06-14 13:51:00,784 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-06-14 13:51:00,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 572 events. 315/572 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2229 event pairs, 82 based on Foata normal form. 35/606 useless extension candidates. Maximal degree in co-relation 866. Up to 211 conditions per place. [2024-06-14 13:51:00,788 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 39 selfloop transitions, 3 changer transitions 3/48 dead transitions. [2024-06-14 13:51:00,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 48 transitions, 203 flow [2024-06-14 13:51:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:51:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:51:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 13:51:00,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-14 13:51:00,789 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 67 flow. Second operand 4 states and 67 transitions. [2024-06-14 13:51:00,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 48 transitions, 203 flow [2024-06-14 13:51:00,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 48 transitions, 201 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:51:00,791 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 75 flow [2024-06-14 13:51:00,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 13:51:00,792 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 13:51:00,792 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 75 flow [2024-06-14 13:51:00,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:00,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:00,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:00,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:51:00,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:00,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash 861446289, now seen corresponding path program 1 times [2024-06-14 13:51:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:00,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23912467] [2024-06-14 13:51:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:00,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:00,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23912467] [2024-06-14 13:51:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23912467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:00,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:00,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:51:00,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665817274] [2024-06-14 13:51:00,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:00,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:51:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:00,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:51:00,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:51:00,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 13:51:00,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:00,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:00,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 13:51:00,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:00,945 INFO L124 PetriNetUnfolderBase]: 212/413 cut-off events. [2024-06-14 13:51:00,945 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-14 13:51:00,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 413 events. 212/413 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1526 event pairs, 86 based on Foata normal form. 20/426 useless extension candidates. Maximal degree in co-relation 419. Up to 189 conditions per place. [2024-06-14 13:51:00,947 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 28 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-06-14 13:51:00,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 161 flow [2024-06-14 13:51:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:51:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:51:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-14 13:51:00,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-14 13:51:00,949 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 75 flow. Second operand 3 states and 53 transitions. [2024-06-14 13:51:00,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 161 flow [2024-06-14 13:51:00,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 157 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:51:00,950 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 79 flow [2024-06-14 13:51:00,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-14 13:51:00,951 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 13:51:00,951 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 79 flow [2024-06-14 13:51:00,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:00,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:00,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:00,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:51:00,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:00,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 287903160, now seen corresponding path program 1 times [2024-06-14 13:51:00,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:00,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423737633] [2024-06-14 13:51:00,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:00,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:01,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:01,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423737633] [2024-06-14 13:51:01,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423737633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:01,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:51:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378985116] [2024-06-14 13:51:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:51:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:51:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:51:01,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-14 13:51:01,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:01,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:01,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-14 13:51:01,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:01,152 INFO L124 PetriNetUnfolderBase]: 354/640 cut-off events. [2024-06-14 13:51:01,152 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-14 13:51:01,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 640 events. 354/640 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2541 event pairs, 145 based on Foata normal form. 12/647 useless extension candidates. Maximal degree in co-relation 783. Up to 306 conditions per place. [2024-06-14 13:51:01,154 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 27 selfloop transitions, 6 changer transitions 2/37 dead transitions. [2024-06-14 13:51:01,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 173 flow [2024-06-14 13:51:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:51:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:51:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-06-14 13:51:01,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-14 13:51:01,156 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 79 flow. Second operand 5 states and 54 transitions. [2024-06-14 13:51:01,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 173 flow [2024-06-14 13:51:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:51:01,157 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 91 flow [2024-06-14 13:51:01,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-06-14 13:51:01,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-14 13:51:01,158 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 91 flow [2024-06-14 13:51:01,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:01,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:51:01,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:51:01,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:51:01,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:51:01,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:51:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash 335064726, now seen corresponding path program 1 times [2024-06-14 13:51:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:51:01,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647903360] [2024-06-14 13:51:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:51:01,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:51:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:51:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:51:01,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:51:01,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647903360] [2024-06-14 13:51:01,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647903360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:51:01,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:51:01,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:51:01,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157825287] [2024-06-14 13:51:01,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:51:01,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:51:01,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:51:01,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:51:01,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:51:01,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-14 13:51:01,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 91 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:01,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:51:01,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-14 13:51:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:51:01,454 INFO L124 PetriNetUnfolderBase]: 247/472 cut-off events. [2024-06-14 13:51:01,454 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-14 13:51:01,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 472 events. 247/472 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1638 event pairs, 66 based on Foata normal form. 18/489 useless extension candidates. Maximal degree in co-relation 688. Up to 144 conditions per place. [2024-06-14 13:51:01,456 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2024-06-14 13:51:01,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 289 flow [2024-06-14 13:51:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:51:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:51:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-14 13:51:01,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-14 13:51:01,457 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 91 flow. Second operand 7 states and 82 transitions. [2024-06-14 13:51:01,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 289 flow [2024-06-14 13:51:01,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 13:51:01,459 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-14 13:51:01,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-14 13:51:01,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 13:51:01,460 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-14 13:51:01,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:51:01,462 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 13:51:01,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 13:51:01,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 13:51:01,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 13:51:01,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:51:01,463 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-14 13:51:01,465 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 13:51:01,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 13:51:01,469 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 13:51:01,469 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 13:51:01,469 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 01:51:01 BasicIcfg [2024-06-14 13:51:01,469 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 13:51:01,470 INFO L158 Benchmark]: Toolchain (without parser) took 3278.60ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 98.5MB in the beginning and 113.2MB in the end (delta: -14.7MB). Peak memory consumption was 82.1MB. Max. memory is 16.1GB. [2024-06-14 13:51:01,470 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 89.8MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:51:01,470 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:51:01,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 777.51ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 61.3MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-14 13:51:01,471 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.61ms. Allocated memory is still 142.6MB. Free memory was 61.3MB in the beginning and 58.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:51:01,471 INFO L158 Benchmark]: Boogie Preprocessor took 47.89ms. Allocated memory is still 142.6MB. Free memory was 58.1MB in the beginning and 55.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 13:51:01,472 INFO L158 Benchmark]: RCFGBuilder took 661.37ms. Allocated memory is still 142.6MB. Free memory was 55.5MB in the beginning and 66.0MB in the end (delta: -10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-06-14 13:51:01,472 INFO L158 Benchmark]: TraceAbstraction took 1739.78ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 65.3MB in the beginning and 113.2MB in the end (delta: -47.9MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2024-06-14 13:51:01,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 89.8MB in the end (delta: 142.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 777.51ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 61.3MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.61ms. Allocated memory is still 142.6MB. Free memory was 61.3MB in the beginning and 58.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.89ms. Allocated memory is still 142.6MB. Free memory was 58.1MB in the beginning and 55.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 661.37ms. Allocated memory is still 142.6MB. Free memory was 55.5MB in the beginning and 66.0MB in the end (delta: -10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1739.78ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 65.3MB in the beginning and 113.2MB in the end (delta: -47.9MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1023]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1024]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 371 IncrementalHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 3 mSDtfsCounter, 371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 13:51:01,492 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE