./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack_longer-2.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_longer-2.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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_longer-2.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/stack_longer-2.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-76401ed-m [2024-06-20 17:44:44,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 17:44:44,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 17:44:44,556 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 17:44:44,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 17:44:44,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 17:44:44,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 17:44:44,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 17:44:44,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 17:44:44,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 17:44:44,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 17:44:44,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 17:44:44,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 17:44:44,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 17:44:44,589 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 17:44:44,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 17:44:44,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 17:44:44,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 17:44:44,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 17:44:44,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 17:44:44,591 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 17:44:44,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 17:44:44,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 17:44:44,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 17:44:44,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 17:44:44,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 17:44:44,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 17:44:44,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 17:44:44,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 17:44:44,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 17:44:44,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 17:44:44,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 17:44:44,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:44:44,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 17:44:44,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 17:44:44,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 17:44:44,602 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 17:44:44,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 17:44:44,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 17:44:44,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 17:44:44,603 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 17:44:44,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 17:44:44,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 17:44:44,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 17:44:44,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 17:44:44,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 17:44:44,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 17:44:44,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 17:44:44,852 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 17:44:44,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2024-06-20 17:44:45,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 17:44:46,071 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 17:44:46,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2024-06-20 17:44:46,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7e8e02f/a7c883424eff49f6964734e28847996f/FLAG35f58334d [2024-06-20 17:44:46,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7e8e02f/a7c883424eff49f6964734e28847996f [2024-06-20 17:44:46,108 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 17:44:46,112 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 17:44:46,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/stack_longer-2.yml/witness.yml [2024-06-20 17:44:46,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 17:44:46,207 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 17:44:46,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 17:44:46,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 17:44:46,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 17:44:46,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:44:46" (1/2) ... [2024-06-20 17:44:46,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2818dfee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:44:46, skipping insertion in model container [2024-06-20 17:44:46,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 05:44:46" (1/2) ... [2024-06-20 17:44:46,215 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73dc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 05:44:46, skipping insertion in model container [2024-06-20 17:44:46,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:46" (2/2) ... [2024-06-20 17:44:46,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2818dfee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46, skipping insertion in model container [2024-06-20 17:44:46,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:46" (2/2) ... [2024-06-20 17:44:46,217 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 17:44:46,249 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 17:44:46,251 INFO L97 edCorrectnessWitness]: Location invariant before [L1022-L1022] ((! 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) [2024-06-20 17:44:46,251 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) [2024-06-20 17:44:46,251 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-20 17:44:46,251 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 17:44:46,252 INFO L106 edCorrectnessWitness]: ghost_update [L993-L993] m_locked = 1; [2024-06-20 17:44:46,252 INFO L106 edCorrectnessWitness]: ghost_update [L1013-L1013] m_locked = 0; [2024-06-20 17:44:46,252 INFO L106 edCorrectnessWitness]: ghost_update [L1007-L1007] m_locked = 1; [2024-06-20 17:44:46,253 INFO L106 edCorrectnessWitness]: ghost_update [L998-L998] m_locked = 0; [2024-06-20 17:44:46,253 INFO L106 edCorrectnessWitness]: ghost_update [L1021-L1021] multithreaded = 1; [2024-06-20 17:44:46,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 17:44:46,691 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:44:46,702 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 [2024-06-20 17:44:46,803 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 17:44:46,852 INFO L206 MainTranslator]: Completed translation [2024-06-20 17:44:46,853 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46 WrapperNode [2024-06-20 17:44:46,853 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 17:44:46,854 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 17:44:46,854 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 17:44:46,854 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 17:44:46,859 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 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,885 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 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,915 INFO L138 Inliner]: procedures = 277, calls = 31, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 160 [2024-06-20 17:44:46,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 17:44:46,916 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 17:44:46,916 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 17:44:46,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 17:44:46,930 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,938 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,953 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-06-20 17:44:46,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,973 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,974 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 17:44:46,977 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 17:44:46,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 17:44:46,979 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 17:44:46,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (1/1) ... [2024-06-20 17:44:46,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 17:44:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 17:44:47,004 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) [2024-06-20 17:44:47,009 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 [2024-06-20 17:44:47,033 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-20 17:44:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-20 17:44:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-20 17:44:47,034 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-20 17:44:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-20 17:44:47,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-20 17:44:47,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 17:44:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 17:44:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-20 17:44:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-20 17:44:47,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 17:44:47,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 17:44:47,037 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 17:44:47,169 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 17:44:47,171 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 17:44:47,389 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 17:44:47,389 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 17:44:47,555 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 17:44:47,555 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-20 17:44:47,556 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:44:47 BoogieIcfgContainer [2024-06-20 17:44:47,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 17:44:47,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 17:44:47,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 17:44:47,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 17:44:47,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 05:44:46" (1/4) ... [2024-06-20 17:44:47,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6ccb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 05:44:47, skipping insertion in model container [2024-06-20 17:44:47,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 05:44:46" (2/4) ... [2024-06-20 17:44:47,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6ccb98 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:44:47, skipping insertion in model container [2024-06-20 17:44:47,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 05:44:46" (3/4) ... [2024-06-20 17:44:47,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6ccb98 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 05:44:47, skipping insertion in model container [2024-06-20 17:44:47,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 05:44:47" (4/4) ... [2024-06-20 17:44:47,564 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-06-20 17:44:47,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 17:44:47,578 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 17:44:47,578 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 17:44:47,626 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-20 17:44:47,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2024-06-20 17:44:47,675 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-06-20 17:44:47,676 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-20 17:44:47,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 2/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-20 17:44:47,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2024-06-20 17:44:47,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 59 flow [2024-06-20 17:44:47,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 17:44:47,695 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;@2fe3d92d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 17:44:47,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 17:44:47,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 17:44:47,700 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-20 17:44:47,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 17:44:47,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:47,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 17:44:47,702 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)] === [2024-06-20 17:44:47,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 414754669, now seen corresponding path program 1 times [2024-06-20 17:44:47,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:47,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213237998] [2024-06-20 17:44:47,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:48,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:48,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213237998] [2024-06-20 17:44:48,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213237998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 17:44:48,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139119405] [2024-06-20 17:44:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:48,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 17:44:48,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 17:44:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 17:44:48,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 17:44:48,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-06-20 17:44:48,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:48,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 17:44:48,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:48,217 INFO L124 PetriNetUnfolderBase]: 267/484 cut-off events. [2024-06-20 17:44:48,217 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-06-20 17:44:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 484 events. 267/484 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2043 event pairs, 95 based on Foata normal form. 24/497 useless extension candidates. Maximal degree in co-relation 899. Up to 308 conditions per place. [2024-06-20 17:44:48,221 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 2 changer transitions 3/39 dead transitions. [2024-06-20 17:44:48,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 163 flow [2024-06-20 17:44:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 17:44:48,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 17:44:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-20 17:44:48,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-06-20 17:44:48,233 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 55 transitions. [2024-06-20 17:44:48,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 163 flow [2024-06-20 17:44:48,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 17:44:48,238 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 65 flow [2024-06-20 17:44:48,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2024-06-20 17:44:48,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2024-06-20 17:44:48,242 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 65 flow [2024-06-20 17:44:48,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2024-06-20 17:44:48,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:48,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:48,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 17:44:48,243 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)] === [2024-06-20 17:44:48,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 923790437, now seen corresponding path program 1 times [2024-06-20 17:44:48,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:48,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593724116] [2024-06-20 17:44:48,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593724116] [2024-06-20 17:44:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593724116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:48,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 17:44:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88500025] [2024-06-20 17:44:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:48,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 17:44:48,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 17:44:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 17:44:48,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 17:44:48,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-06-20 17:44:48,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:48,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 17:44:48,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:48,553 INFO L124 PetriNetUnfolderBase]: 304/560 cut-off events. [2024-06-20 17:44:48,553 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-20 17:44:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 560 events. 304/560 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2347 event pairs, 123 based on Foata normal form. 20/575 useless extension candidates. Maximal degree in co-relation 574. Up to 300 conditions per place. [2024-06-20 17:44:48,557 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2024-06-20 17:44:48,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 182 flow [2024-06-20 17:44:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 17:44:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 17:44:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 62 transitions. [2024-06-20 17:44:48,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-06-20 17:44:48,559 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 65 flow. Second operand 4 states and 62 transitions. [2024-06-20 17:44:48,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 182 flow [2024-06-20 17:44:48,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 17:44:48,560 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 102 flow [2024-06-20 17:44:48,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-06-20 17:44:48,561 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-06-20 17:44:48,561 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 102 flow [2024-06-20 17:44:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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) [2024-06-20 17:44:48,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:48,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 17:44:48,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 17:44:48,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1427116962, now seen corresponding path program 1 times [2024-06-20 17:44:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:48,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149184280] [2024-06-20 17:44:48,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:48,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:48,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:48,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149184280] [2024-06-20 17:44:48,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149184280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:48,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:48,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 17:44:48,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096910270] [2024-06-20 17:44:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 17:44:48,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:48,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 17:44:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-20 17:44:48,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-20 17:44:48,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-06-20 17:44:48,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:48,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-20 17:44:48,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:48,797 INFO L124 PetriNetUnfolderBase]: 395/715 cut-off events. [2024-06-20 17:44:48,798 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2024-06-20 17:44:48,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 715 events. 395/715 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2997 event pairs, 91 based on Foata normal form. 27/737 useless extension candidates. Maximal degree in co-relation 1354. Up to 297 conditions per place. [2024-06-20 17:44:48,803 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 47 selfloop transitions, 3 changer transitions 3/57 dead transitions. [2024-06-20 17:44:48,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 57 transitions, 304 flow [2024-06-20 17:44:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 17:44:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 17:44:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-20 17:44:48,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948275862068966 [2024-06-20 17:44:48,806 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 102 flow. Second operand 4 states and 69 transitions. [2024-06-20 17:44:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 57 transitions, 304 flow [2024-06-20 17:44:48,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 57 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 17:44:48,811 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 109 flow [2024-06-20 17:44:48,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2024-06-20 17:44:48,812 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-06-20 17:44:48,812 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 109 flow [2024-06-20 17:44:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2024-06-20 17:44:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:48,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:48,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 17:44:48,814 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)] === [2024-06-20 17:44:48,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash -70285093, now seen corresponding path program 1 times [2024-06-20 17:44:48,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:48,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019892712] [2024-06-20 17:44:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:48,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019892712] [2024-06-20 17:44:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019892712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:48,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:48,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 17:44:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179270159] [2024-06-20 17:44:48,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:48,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 17:44:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 17:44:48,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 17:44:48,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-20 17:44:48,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-06-20 17:44:48,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:48,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-20 17:44:48,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:48,973 INFO L124 PetriNetUnfolderBase]: 228/449 cut-off events. [2024-06-20 17:44:48,974 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-06-20 17:44:48,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 449 events. 228/449 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1696 event pairs, 87 based on Foata normal form. 24/462 useless extension candidates. Maximal degree in co-relation 588. Up to 206 conditions per place. [2024-06-20 17:44:48,976 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 26 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2024-06-20 17:44:48,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 175 flow [2024-06-20 17:44:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 17:44:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 17:44:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-20 17:44:48,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-20 17:44:48,978 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 109 flow. Second operand 3 states and 54 transitions. [2024-06-20 17:44:48,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 175 flow [2024-06-20 17:44:48,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-20 17:44:48,980 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 88 flow [2024-06-20 17:44:48,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-06-20 17:44:48,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2024-06-20 17:44:48,982 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 88 flow [2024-06-20 17:44:48,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2024-06-20 17:44:48,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 17:44:48,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 17:44:48,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 17:44:48,983 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)] === [2024-06-20 17:44:48,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 17:44:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1415871573, now seen corresponding path program 1 times [2024-06-20 17:44:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 17:44:48,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627878987] [2024-06-20 17:44:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 17:44:48,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 17:44:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 17:44:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 17:44:49,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 17:44:49,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627878987] [2024-06-20 17:44:49,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627878987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 17:44:49,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 17:44:49,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 17:44:49,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414848174] [2024-06-20 17:44:49,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 17:44:49,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 17:44:49,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 17:44:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 17:44:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-20 17:44:49,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-06-20 17:44:49,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2024-06-20 17:44:49,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 17:44:49,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-06-20 17:44:49,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 17:44:49,429 INFO L124 PetriNetUnfolderBase]: 397/707 cut-off events. [2024-06-20 17:44:49,429 INFO L125 PetriNetUnfolderBase]: For 571/571 co-relation queries the response was YES. [2024-06-20 17:44:49,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 707 events. 397/707 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2670 event pairs, 99 based on Foata normal form. 18/721 useless extension candidates. Maximal degree in co-relation 1087. Up to 178 conditions per place. [2024-06-20 17:44:49,431 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2024-06-20 17:44:49,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 67 transitions, 340 flow [2024-06-20 17:44:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 17:44:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 17:44:49,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-20 17:44:49,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-20 17:44:49,433 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 88 flow. Second operand 8 states and 99 transitions. [2024-06-20 17:44:49,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 67 transitions, 340 flow [2024-06-20 17:44:49,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 67 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-20 17:44:49,435 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-20 17:44:49,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, 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=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-20 17:44:49,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-20 17:44:49,436 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-20 17:44:49,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2024-06-20 17:44:49,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 17:44:49,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 17:44:49,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 17:44:49,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 17:44:49,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 17:44:49,439 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-20 17:44:49,442 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 17:44:49,442 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 17:44:49,445 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 17:44:49,445 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 17:44:49,446 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 05:44:49 BasicIcfg [2024-06-20 17:44:49,446 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 17:44:49,446 INFO L158 Benchmark]: Toolchain (without parser) took 3239.74ms. Allocated memory was 169.9MB in the beginning and 211.8MB in the end (delta: 41.9MB). Free memory was 135.6MB in the beginning and 75.5MB in the end (delta: 60.1MB). Peak memory consumption was 101.8MB. Max. memory is 16.1GB. [2024-06-20 17:44:49,447 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:49,447 INFO L158 Benchmark]: Witness Parser took 0.45ms. Allocated memory is still 169.9MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 17:44:49,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 645.82ms. Allocated memory is still 169.9MB. Free memory was 135.6MB in the beginning and 98.4MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-06-20 17:44:49,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.86ms. Allocated memory is still 169.9MB. Free memory was 98.4MB in the beginning and 95.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 17:44:49,448 INFO L158 Benchmark]: Boogie Preprocessor took 60.70ms. Allocated memory is still 169.9MB. Free memory was 95.7MB in the beginning and 92.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 17:44:49,448 INFO L158 Benchmark]: RCFGBuilder took 579.08ms. Allocated memory is still 169.9MB. Free memory was 92.8MB in the beginning and 98.2MB in the end (delta: -5.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-06-20 17:44:49,448 INFO L158 Benchmark]: TraceAbstraction took 1887.59ms. Allocated memory was 169.9MB in the beginning and 211.8MB in the end (delta: 41.9MB). Free memory was 98.2MB in the beginning and 75.5MB in the end (delta: 22.7MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. [2024-06-20 17:44:49,449 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.45ms. Allocated memory is still 169.9MB. Free memory is still 139.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 645.82ms. Allocated memory is still 169.9MB. Free memory was 135.6MB in the beginning and 98.4MB in the end (delta: 37.1MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.86ms. Allocated memory is still 169.9MB. Free memory was 98.4MB in the beginning and 95.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.70ms. Allocated memory is still 169.9MB. Free memory was 95.7MB in the beginning and 92.8MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 579.08ms. Allocated memory is still 169.9MB. Free memory was 92.8MB in the beginning and 98.2MB in the end (delta: -5.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1887.59ms. Allocated memory was 169.9MB in the beginning and 211.8MB in the end (delta: 41.9MB). Free memory was 98.2MB in the beginning and 75.5MB in the end (delta: 22.7MB). Peak memory consumption was 63.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1022]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1023]: 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, 44 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: 1.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 379 IncrementalHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 5 mSDtfsCounter, 379 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=3, 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, 0.7s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 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! [2024-06-20 17:44:49,474 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