./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/circular_buffer_ok.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/circular_buffer_ok.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:04:57,888 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:04:57,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:04:57,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:04:57,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:04:57,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:04:57,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:04:57,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:04:57,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:04:57,969 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:04:57,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:04:57,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:04:57,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:04:57,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:04:57,972 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:04:57,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:04:57,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:04:57,972 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:04:57,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:04:57,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:04:57,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:04:57,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:04:57,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:04:57,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:04:57,974 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:04:57,974 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:04:57,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:04:57,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:04:57,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:04:57,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:04:57,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:04:57,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:04:57,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:04:57,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:04:57,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:04:57,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:04:57,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:04:57,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:04:57,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:04:57,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:04:57,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:04:57,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:04:57,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:04:57,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:04:58,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:04:58,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:04:58,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:04:58,302 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:04:58,303 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:04:58,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/circular_buffer_ok.yml/witness.yml [2024-06-27 23:04:58,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:04:58,358 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:04:58,359 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-06-27 23:04:59,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:04:59,607 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:04:59,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_ok.i [2024-06-27 23:04:59,620 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104c490a2/f381e800c6a04e8bb97fbafcb9773a74/FLAGae41f75a3 [2024-06-27 23:04:59,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/104c490a2/f381e800c6a04e8bb97fbafcb9773a74 [2024-06-27 23:05:00,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:05:00,001 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:05:00,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:00,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:05:00,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:05:00,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:04:58" (1/2) ... [2024-06-27 23:05:00,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f660cbd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:00, skipping insertion in model container [2024-06-27 23:05:00,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:04:58" (1/2) ... [2024-06-27 23:05:00,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35d6200e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:05:00, skipping insertion in model container [2024-06-27 23:05:00,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:04:59" (2/2) ... [2024-06-27 23:05:00,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f660cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00, skipping insertion in model container [2024-06-27 23:05:00,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:04:59" (2/2) ... [2024-06-27 23:05:00,011 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:05:00,036 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:05:00,037 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ! multithreaded || (m_locked || ((-1LL + (long long )receive) + (long long )send >= 0LL && (1LL - (long long )receive) - (long long )send >= 0LL)) [2024-06-27 23:05:00,038 INFO L97 edCorrectnessWitness]: Location invariant before [L765-L765] ! multithreaded || (m_locked || ((-1LL + (long long )receive) + (long long )send >= 0LL && (1LL - (long long )receive) - (long long )send >= 0LL)) [2024-06-27 23:05:00,038 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-27 23:05:00,038 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:05:00,038 INFO L106 edCorrectnessWitness]: ghost_update [L763-L763] multithreaded = 1; [2024-06-27 23:05:00,039 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] m_locked = 1; [2024-06-27 23:05:00,039 INFO L106 edCorrectnessWitness]: ghost_update [L745-L745] m_locked = 1; [2024-06-27 23:05:00,039 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] m_locked = 0; [2024-06-27 23:05:00,039 INFO L106 edCorrectnessWitness]: ghost_update [L753-L753] m_locked = 0; [2024-06-27 23:05:00,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:05:00,320 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:00,328 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 [2024-06-27 23:05:00,386 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:05:00,415 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:05:00,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00 WrapperNode [2024-06-27 23:05:00,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:05:00,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:00,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:05:00,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:05:00,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,446 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,470 INFO L138 Inliner]: procedures = 168, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 152 [2024-06-27 23:05:00,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:05:00,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:05:00,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:05:00,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:05:00,479 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,484 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,496 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 1, 3, 8]. 57 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 8]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-06-27 23:05:00,496 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,502 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,505 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,508 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,509 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,511 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:05:00,512 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:05:00,512 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:05:00,512 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:05:00,513 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (1/1) ... [2024-06-27 23:05:00,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:05:00,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:00,541 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) [2024-06-27 23:05:00,542 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 [2024-06-27 23:05:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 23:05:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 23:05:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 23:05:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 23:05:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 23:05:00,573 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 23:05:00,573 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 23:05:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 23:05:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 23:05:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 23:05:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 23:05:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 23:05:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 23:05:00,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 23:05:00,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 23:05:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 23:05:00,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:05:00,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:05:00,577 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:05:00,690 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:05:00,691 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:05:00,971 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:05:00,971 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:05:01,134 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:05:01,135 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 23:05:01,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:01 BoogieIcfgContainer [2024-06-27 23:05:01,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:05:01,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:05:01,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:05:01,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:05:01,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:04:58" (1/4) ... [2024-06-27 23:05:01,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d677356 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:05:01, skipping insertion in model container [2024-06-27 23:05:01,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:04:59" (2/4) ... [2024-06-27 23:05:01,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d677356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:01, skipping insertion in model container [2024-06-27 23:05:01,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:05:00" (3/4) ... [2024-06-27 23:05:01,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d677356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:05:01, skipping insertion in model container [2024-06-27 23:05:01,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:05:01" (4/4) ... [2024-06-27 23:05:01,141 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-06-27 23:05:01,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:05:01,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:05:01,154 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:05:01,184 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 23:05:01,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 29 transitions, 72 flow [2024-06-27 23:05:01,239 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2024-06-27 23:05:01,240 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 23:05:01,243 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 41 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. [2024-06-27 23:05:01,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 29 transitions, 72 flow [2024-06-27 23:05:01,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 25 transitions, 59 flow [2024-06-27 23:05:01,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:05:01,262 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;@71a858d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:05:01,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:05:01,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:05:01,266 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:05:01,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:05:01,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:01,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:05:01,267 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)] === [2024-06-27 23:05:01,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash 406286641, now seen corresponding path program 1 times [2024-06-27 23:05:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:01,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536900153] [2024-06-27 23:05:01,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:01,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:01,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536900153] [2024-06-27 23:05:01,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536900153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:01,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:01,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:05:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343006217] [2024-06-27 23:05:01,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:01,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:05:01,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:01,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:05:01,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:05:01,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:05:01,566 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) [2024-06-27 23:05:01,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:01,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:05:01,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:01,722 INFO L124 PetriNetUnfolderBase]: 267/484 cut-off events. [2024-06-27 23:05:01,723 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-06-27 23:05:01,724 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 2009 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. [2024-06-27 23:05:01,728 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 2 changer transitions 3/39 dead transitions. [2024-06-27 23:05:01,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 163 flow [2024-06-27 23:05:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:05:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:05:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-27 23:05:01,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-06-27 23:05:01,738 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 59 flow. Second operand 3 states and 55 transitions. [2024-06-27 23:05:01,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 163 flow [2024-06-27 23:05:01,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:01,743 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 65 flow [2024-06-27 23:05:01,745 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} [2024-06-27 23:05:01,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2024-06-27 23:05:01,748 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 65 flow [2024-06-27 23:05:01,748 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) [2024-06-27 23:05:01,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:01,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:01,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:05:01,749 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)] === [2024-06-27 23:05:01,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:01,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2116370505, now seen corresponding path program 1 times [2024-06-27 23:05:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:01,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481393763] [2024-06-27 23:05:01,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:01,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:01,781 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 23:05:01,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930536385] [2024-06-27 23:05:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:01,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:01,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:05:01,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 23:05:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:01,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2024-06-27 23:05:01,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:05:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:01,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 23:05:01,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481393763] [2024-06-27 23:05:01,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 23:05:01,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930536385] [2024-06-27 23:05:01,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930536385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:01,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:01,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:05:01,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729333942] [2024-06-27 23:05:01,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:01,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:05:01,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:05:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:05:01,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:05:01,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-06-27 23:05:01,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:01,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:05:01,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:02,037 INFO L124 PetriNetUnfolderBase]: 304/560 cut-off events. [2024-06-27 23:05:02,037 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-27 23:05:02,040 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 2340 event pairs, 123 based on Foata normal form. 20/575 useless extension candidates. Maximal degree in co-relation 574. Up to 301 conditions per place. [2024-06-27 23:05:02,043 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 34 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-27 23:05:02,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 182 flow [2024-06-27 23:05:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:05:02,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:05:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-27 23:05:02,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2024-06-27 23:05:02,046 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 65 flow. Second operand 3 states and 56 transitions. [2024-06-27 23:05:02,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 182 flow [2024-06-27 23:05:02,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:05:02,049 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 99 flow [2024-06-27 23:05:02,049 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=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2024-06-27 23:05:02,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2024-06-27 23:05:02,050 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 99 flow [2024-06-27 23:05:02,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2024-06-27 23:05:02,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:02,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:02,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-27 23:05:02,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:02,262 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)] === [2024-06-27 23:05:02,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1183602963, now seen corresponding path program 1 times [2024-06-27 23:05:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935467986] [2024-06-27 23:05:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:02,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 23:05:02,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555899831] [2024-06-27 23:05:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:02,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:02,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:02,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:05:02,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 23:05:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:02,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2024-06-27 23:05:02,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:05:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:02,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 23:05:02,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935467986] [2024-06-27 23:05:02,482 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 23:05:02,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555899831] [2024-06-27 23:05:02,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555899831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:02,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745614925] [2024-06-27 23:05:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:02,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:05:02,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:05:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:05:02,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:05:02,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:02,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:02,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:05:02,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:02,647 INFO L124 PetriNetUnfolderBase]: 396/741 cut-off events. [2024-06-27 23:05:02,647 INFO L125 PetriNetUnfolderBase]: For 440/440 co-relation queries the response was YES. [2024-06-27 23:05:02,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 741 events. 396/741 cut-off events. For 440/440 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3137 event pairs, 69 based on Foata normal form. 42/782 useless extension candidates. Maximal degree in co-relation 1733. Up to 314 conditions per place. [2024-06-27 23:05:02,650 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 50 selfloop transitions, 5 changer transitions 1/60 dead transitions. [2024-06-27 23:05:02,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 315 flow [2024-06-27 23:05:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:05:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:05:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-27 23:05:02,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2024-06-27 23:05:02,652 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 99 flow. Second operand 5 states and 79 transitions. [2024-06-27 23:05:02,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 315 flow [2024-06-27 23:05:02,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 60 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:02,654 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 118 flow [2024-06-27 23:05:02,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-06-27 23:05:02,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-27 23:05:02,655 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 118 flow [2024-06-27 23:05:02,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:05:02,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:02,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:02,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 23:05:02,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-06-27 23:05:02,870 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)] === [2024-06-27 23:05:02,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:02,870 INFO L85 PathProgramCache]: Analyzing trace with hash 254405803, now seen corresponding path program 1 times [2024-06-27 23:05:02,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696645413] [2024-06-27 23:05:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:02,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:02,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 23:05:02,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251253229] [2024-06-27 23:05:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:02,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:02,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:05:02,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 23:05:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:02,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2024-06-27 23:05:02,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:05:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-06-27 23:05:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:02,993 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 23:05:02,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:02,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696645413] [2024-06-27 23:05:02,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 23:05:02,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251253229] [2024-06-27 23:05:02,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251253229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:02,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:02,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:05:02,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297133895] [2024-06-27 23:05:02,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:02,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:05:02,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:05:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:05:02,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-27 23:05:02,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 118 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) [2024-06-27 23:05:02,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:02,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-27 23:05:02,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:03,056 INFO L124 PetriNetUnfolderBase]: 211/424 cut-off events. [2024-06-27 23:05:03,057 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-27 23:05:03,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 424 events. 211/424 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1535 event pairs, 79 based on Foata normal form. 24/438 useless extension candidates. Maximal degree in co-relation 622. Up to 204 conditions per place. [2024-06-27 23:05:03,059 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-06-27 23:05:03,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 192 flow [2024-06-27 23:05:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:05:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:05:03,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-27 23:05:03,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-06-27 23:05:03,060 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 118 flow. Second operand 3 states and 54 transitions. [2024-06-27 23:05:03,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 192 flow [2024-06-27 23:05:03,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:05:03,061 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 103 flow [2024-06-27 23:05:03,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=103, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-06-27 23:05:03,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2024-06-27 23:05:03,062 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 103 flow [2024-06-27 23:05:03,063 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) [2024-06-27 23:05:03,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:03,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:03,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 23:05:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:03,274 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)] === [2024-06-27 23:05:03,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1434104810, now seen corresponding path program 1 times [2024-06-27 23:05:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:03,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081290481] [2024-06-27 23:05:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:03,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 23:05:03,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050719890] [2024-06-27 23:05:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:03,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:03,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:03,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:05:03,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 23:05:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:03,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2024-06-27 23:05:03,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:05:03,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:03,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 23:05:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081290481] [2024-06-27 23:05:03,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 23:05:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050719890] [2024-06-27 23:05:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050719890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:05:03,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:05:03,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:05:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130984950] [2024-06-27 23:05:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:03,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:05:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:03,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:05:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:05:03,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-27 23:05:03,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 103 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-06-27 23:05:03,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:03,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-27 23:05:03,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:04,071 INFO L124 PetriNetUnfolderBase]: 313/609 cut-off events. [2024-06-27 23:05:04,071 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2024-06-27 23:05:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 609 events. 313/609 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2139 event pairs, 85 based on Foata normal form. 9/617 useless extension candidates. Maximal degree in co-relation 1458. Up to 250 conditions per place. [2024-06-27 23:05:04,074 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 51 selfloop transitions, 8 changer transitions 7/70 dead transitions. [2024-06-27 23:05:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 380 flow [2024-06-27 23:05:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:05:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:05:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-27 23:05:04,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804597701149425 [2024-06-27 23:05:04,075 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 103 flow. Second operand 6 states and 101 transitions. [2024-06-27 23:05:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 380 flow [2024-06-27 23:05:04,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 70 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:04,077 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 158 flow [2024-06-27 23:05:04,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-27 23:05:04,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-06-27 23:05:04,078 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 158 flow [2024-06-27 23:05:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-06-27 23:05:04,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:04,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:04,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 23:05:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:04,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:04,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash -809501305, now seen corresponding path program 1 times [2024-06-27 23:05:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:04,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201887976] [2024-06-27 23:05:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:04,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 23:05:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725789426] [2024-06-27 23:05:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:04,328 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:05:04,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 23:05:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:05:04,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-27 23:05:04,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:05:04,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:04,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:04,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:06,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 79 [2024-06-27 23:05:06,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-06-27 23:05:06,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2024-06-27 23:05:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:09,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 23:05:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-27 23:05:10,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201887976] [2024-06-27 23:05:10,116 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 23:05:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725789426] [2024-06-27 23:05:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725789426] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-27 23:05:10,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 23:05:10,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-06-27 23:05:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222051236] [2024-06-27 23:05:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:05:10,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:05:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:05:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:05:10,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-06-27 23:05:10,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-06-27 23:05:10,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:10,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-06-27 23:05:10,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:10,494 INFO L124 PetriNetUnfolderBase]: 1089/1973 cut-off events. [2024-06-27 23:05:10,494 INFO L125 PetriNetUnfolderBase]: For 2133/2133 co-relation queries the response was YES. [2024-06-27 23:05:10,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5403 conditions, 1973 events. 1089/1973 cut-off events. For 2133/2133 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9715 event pairs, 224 based on Foata normal form. 9/1977 useless extension candidates. Maximal degree in co-relation 2564. Up to 366 conditions per place. [2024-06-27 23:05:10,501 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 27 selfloop transitions, 9 changer transitions 79/117 dead transitions. [2024-06-27 23:05:10,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 117 transitions, 741 flow [2024-06-27 23:05:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:05:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:05:10,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-27 23:05:10,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808429118773945 [2024-06-27 23:05:10,504 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 158 flow. Second operand 9 states and 130 transitions. [2024-06-27 23:05:10,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 117 transitions, 741 flow [2024-06-27 23:05:10,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 117 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:05:10,510 INFO L231 Difference]: Finished difference. Result has 51 places, 30 transitions, 196 flow [2024-06-27 23:05:10,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=51, PETRI_TRANSITIONS=30} [2024-06-27 23:05:10,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-27 23:05:10,513 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 30 transitions, 196 flow [2024-06-27 23:05:10,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-06-27 23:05:10,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:05:10,514 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:05:10,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-06-27 23:05:10,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:10,725 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:05:10,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:05:10,725 INFO L85 PathProgramCache]: Analyzing trace with hash 725442245, now seen corresponding path program 2 times [2024-06-27 23:05:10,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:05:10,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147079923] [2024-06-27 23:05:10,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:05:10,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:05:10,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-06-27 23:05:10,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020160522] [2024-06-27 23:05:10,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 23:05:10,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:05:10,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 23:05:10,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 23:05:10,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 23:05:10,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 23:05:10,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-27 23:05:10,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 23:05:10,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:10,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:10,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 23:05:12,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 79 [2024-06-27 23:05:12,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-06-27 23:05:12,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2024-06-27 23:05:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:15,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 23:05:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:05:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:05:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147079923] [2024-06-27 23:05:15,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-06-27 23:05:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020160522] [2024-06-27 23:05:15,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020160522] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 23:05:15,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-06-27 23:05:15,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2024-06-27 23:05:15,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628123929] [2024-06-27 23:05:15,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-06-27 23:05:15,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:05:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:05:15,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:05:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:05:15,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 23:05:15,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 30 transitions, 196 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-06-27 23:05:15,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:05:15,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 23:05:15,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:05:18,517 INFO L124 PetriNetUnfolderBase]: 217/427 cut-off events. [2024-06-27 23:05:18,517 INFO L125 PetriNetUnfolderBase]: For 920/920 co-relation queries the response was YES. [2024-06-27 23:05:18,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1367 conditions, 427 events. 217/427 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1390 event pairs, 36 based on Foata normal form. 9/436 useless extension candidates. Maximal degree in co-relation 1343. Up to 168 conditions per place. [2024-06-27 23:05:18,519 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2024-06-27 23:05:18,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 346 flow [2024-06-27 23:05:18,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:05:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:05:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 23:05:18,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39901477832512317 [2024-06-27 23:05:18,522 INFO L175 Difference]: Start difference. First operand has 51 places, 30 transitions, 196 flow. Second operand 7 states and 81 transitions. [2024-06-27 23:05:18,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 346 flow [2024-06-27 23:05:18,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 307 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 23:05:18,524 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-27 23:05:18,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-27 23:05:18,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2024-06-27 23:05:18,524 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-27 23:05:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 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) [2024-06-27 23:05:18,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:05:18,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:05:18,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:05:18,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:05:18,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-06-27 23:05:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 23:05:18,739 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-27 23:05:18,741 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:05:18,741 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:05:18,743 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:05:18,743 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:05:18,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:05:18 BasicIcfg [2024-06-27 23:05:18,744 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:05:18,745 INFO L158 Benchmark]: Toolchain (without parser) took 18744.01ms. Allocated memory was 174.1MB in the beginning and 685.8MB in the end (delta: 511.7MB). Free memory was 113.6MB in the beginning and 429.0MB in the end (delta: -315.4MB). Peak memory consumption was 197.9MB. Max. memory is 16.1GB. [2024-06-27 23:05:18,745 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 174.1MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:05:18,745 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 174.1MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:05:18,745 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.65ms. Allocated memory is still 174.1MB. Free memory was 113.3MB in the beginning and 87.0MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 23:05:18,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.84ms. Allocated memory is still 174.1MB. Free memory was 86.9MB in the beginning and 84.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:05:18,746 INFO L158 Benchmark]: Boogie Preprocessor took 40.63ms. Allocated memory is still 174.1MB. Free memory was 84.2MB in the beginning and 81.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:05:18,746 INFO L158 Benchmark]: RCFGBuilder took 623.27ms. Allocated memory is still 174.1MB. Free memory was 81.5MB in the beginning and 98.4MB in the end (delta: -16.9MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2024-06-27 23:05:18,746 INFO L158 Benchmark]: TraceAbstraction took 17607.80ms. Allocated memory was 174.1MB in the beginning and 685.8MB in the end (delta: 511.7MB). Free memory was 97.1MB in the beginning and 429.0MB in the end (delta: -331.9MB). Peak memory consumption was 179.6MB. Max. memory is 16.1GB. [2024-06-27 23:05:18,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 174.1MB. Free memory is still 141.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 174.1MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.65ms. Allocated memory is still 174.1MB. Free memory was 113.3MB in the beginning and 87.0MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.84ms. Allocated memory is still 174.1MB. Free memory was 86.9MB in the beginning and 84.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.63ms. Allocated memory is still 174.1MB. Free memory was 84.2MB in the beginning and 81.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 623.27ms. Allocated memory is still 174.1MB. Free memory was 81.5MB in the beginning and 98.4MB in the end (delta: -16.9MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17607.80ms. Allocated memory was 174.1MB in the beginning and 685.8MB in the end (delta: 511.7MB). Free memory was 97.1MB in the beginning and 429.0MB in the end (delta: -331.9MB). Peak memory consumption was 179.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 765]: 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: 17.5s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 252 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 820 IncrementalHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 8 mSDtfsCounter, 820 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=6, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 162 ConstructedInterpolants, 41 QuantifiedInterpolants, 7120 SizeOfPredicates, 100 NumberOfNonLiveVariables, 1052 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 19/32 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! [2024-06-27 23:05:18,792 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