./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/fib_unsafe-6.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i ./goblint.2024-05-07_14-17-48.files/protection/fib_unsafe-6.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:56:44,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:56:44,083 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:56:44,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:56:44,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:56:44,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:56:44,118 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:56:44,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:56:44,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:56:44,124 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:56:44,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:56:44,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:56:44,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:56:44,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:56:44,127 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:56:44,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:56:44,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:56:44,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:56:44,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:56:44,129 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:56:44,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:56:44,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:56:44,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:56:44,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:56:44,131 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:56:44,131 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:56:44,132 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:56:44,132 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:56:44,133 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:56:44,133 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:56:44,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:56:44,134 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:56:44,134 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:44,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:56:44,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:56:44,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:56:44,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:56:44,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:56:44,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:56:44,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:56:44,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:56:44,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:56:44,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:56:44,137 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:56:44,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:56:44,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:56:44,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:56:44,420 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:56:44,420 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:56:44,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i [2024-05-12 12:56:45,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:56:45,936 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:56:45,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i [2024-05-12 12:56:45,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594aa0659/7fd19faa7e634407be480babdeda4a69/FLAGac4ca9128 [2024-05-12 12:56:45,964 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/594aa0659/7fd19faa7e634407be480babdeda4a69 [2024-05-12 12:56:45,967 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:56:45,967 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:56:45,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/fib_unsafe-6.yml/witness.yml [2024-05-12 12:56:46,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:56:46,099 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:56:46,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:46,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:56:46,105 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:56:46,106 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:45" (1/2) ... [2024-05-12 12:56:46,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d18d332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:46, skipping insertion in model container [2024-05-12 12:56:46,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:56:45" (1/2) ... [2024-05-12 12:56:46,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3688654b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:56:46, skipping insertion in model container [2024-05-12 12:56:46,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:46" (2/2) ... [2024-05-12 12:56:46,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d18d332 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46, skipping insertion in model container [2024-05-12 12:56:46,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:46" (2/2) ... [2024-05-12 12:56:46,111 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:56:46,149 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:56:46,150 INFO L97 edCorrectnessWitness]: Location invariant before [L721-L721] (((((((! multithreaded || (0 <= next && next <= 0)) && (! multithreaded || 0 <= q)) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= p)) && (! multithreaded || (0 <= prev && prev <= 0))) && (! multithreaded || (0 <= cur && cur <= 0))) && (! multithreaded || 1 <= j)) && (! multithreaded || 1 <= i) [2024-05-12 12:56:46,151 INFO L97 edCorrectnessWitness]: Location invariant before [L722-L722] (((((((! multithreaded || (0 <= next && next <= 0)) && (! multithreaded || 0 <= q)) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= p)) && (! multithreaded || (0 <= prev && prev <= 0))) && (! multithreaded || (0 <= cur && cur <= 0))) && (! multithreaded || 1 <= j)) && (! multithreaded || 1 <= i) [2024-05-12 12:56:46,151 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:56:46,151 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] multithreaded = 1; [2024-05-12 12:56:46,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:56:46,572 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i[30243,30256] [2024-05-12 12:56:46,601 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:46,611 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 12:56:46,692 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i[30243,30256] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:56:46,727 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:56:46,769 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:56:46,770 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46 WrapperNode [2024-05-12 12:56:46,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:56:46,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:46,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:56:46,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:56:46,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,856 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-05-12 12:56:46,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:56:46,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:56:46,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:56:46,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:56:46,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,891 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 12:56:46,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:56:46,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:56:46,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:56:46,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:56:46,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (1/1) ... [2024-05-12 12:56:46,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:56:46,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:56:46,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 12:56:46,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 12:56:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-05-12 12:56:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-05-12 12:56:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-05-12 12:56:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-05-12 12:56:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:56:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:56:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:56:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 12:56:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:56:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:56:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:56:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:56:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:56:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:56:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 12:56:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:56:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:56:46,968 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:56:47,081 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:56:47,083 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:56:47,282 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:56:47,282 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:56:47,389 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:56:47,390 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-05-12 12:56:47,390 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:47 BoogieIcfgContainer [2024-05-12 12:56:47,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:56:47,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:56:47,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:56:47,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:56:47,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:56:45" (1/4) ... [2024-05-12 12:56:47,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768216dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:56:47, skipping insertion in model container [2024-05-12 12:56:47,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:56:46" (2/4) ... [2024-05-12 12:56:47,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768216dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:47, skipping insertion in model container [2024-05-12 12:56:47,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:56:46" (3/4) ... [2024-05-12 12:56:47,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768216dd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:56:47, skipping insertion in model container [2024-05-12 12:56:47,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:56:47" (4/4) ... [2024-05-12 12:56:47,399 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2024-05-12 12:56:47,415 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:56:47,416 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 12:56:47,416 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:56:47,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 12:56:47,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 76 flow [2024-05-12 12:56:47,512 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-05-12 12:56:47,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:56:47,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 4/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-05-12 12:56:47,516 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 34 transitions, 76 flow [2024-05-12 12:56:47,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 70 flow [2024-05-12 12:56:47,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:56:47,533 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;@14700de5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:56:47,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 12:56:47,539 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:56:47,539 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-05-12 12:56:47,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:56:47,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:56:47,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:56:47,541 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 12:56:47,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:56:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash -796992463, now seen corresponding path program 1 times [2024-05-12 12:56:47,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:56:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284429557] [2024-05-12 12:56:47,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:56:47,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:56:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 12:56:47,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 12:56:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 12:56:47,806 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 12:56:47,808 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 12:56:47,810 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 12:56:47,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 12:56:47,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 12:56:47,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 12:56:47,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 12:56:47,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:56:47,814 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-12 12:56:47,826 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:56:47,826 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:56:47,861 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 12:56:47,861 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 12:56:47,862 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:56:47 BasicIcfg [2024-05-12 12:56:47,862 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:56:47,863 INFO L158 Benchmark]: Toolchain (without parser) took 1763.74ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 77.2MB in the beginning and 157.0MB in the end (delta: -79.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:47,863 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 153.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:47,863 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 153.1MB. Free memory was 81.2MB in the beginning and 81.0MB in the end (delta: 191.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:47,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.52ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 77.0MB in the beginning and 151.7MB in the end (delta: -74.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-05-12 12:56:47,874 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.81ms. Allocated memory is still 195.0MB. Free memory was 151.7MB in the beginning and 149.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:47,876 INFO L158 Benchmark]: Boogie Preprocessor took 46.11ms. Allocated memory is still 195.0MB. Free memory was 149.6MB in the beginning and 147.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:56:47,877 INFO L158 Benchmark]: RCFGBuilder took 486.00ms. Allocated memory is still 195.0MB. Free memory was 147.5MB in the beginning and 119.2MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-05-12 12:56:47,877 INFO L158 Benchmark]: TraceAbstraction took 469.65ms. Allocated memory is still 195.0MB. Free memory was 119.2MB in the beginning and 157.0MB in the end (delta: -37.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:56:47,889 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 153.1MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 153.1MB. Free memory was 81.2MB in the beginning and 81.0MB in the end (delta: 191.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.52ms. Allocated memory was 153.1MB in the beginning and 195.0MB in the end (delta: 41.9MB). Free memory was 77.0MB in the beginning and 151.7MB in the end (delta: -74.8MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.81ms. Allocated memory is still 195.0MB. Free memory was 151.7MB in the beginning and 149.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.11ms. Allocated memory is still 195.0MB. Free memory was 149.6MB in the beginning and 147.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 486.00ms. Allocated memory is still 195.0MB. Free memory was 147.5MB in the beginning and 119.2MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 469.65ms. Allocated memory is still 195.0MB. Free memory was 119.2MB in the beginning and 157.0MB in the end (delta: -37.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 721]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L682] 0 int i, j; [L685] 0 int p, q; [L702] 0 int cur = 1, prev = 0, next = 0; [L703] 0 int x; [L713] 0 pthread_t id1, id2; VAL [\old(argc)=49, \old(argv)={50:51}, argc=49, cur=1, i=0, id1={3:0}, id2={5:0}, j=0, next=0, p=0, prev=0, q=0, x=0] [L715] 0 i = 1 VAL [\old(argc)=49, \old(argv)={50:51}, argc=49, cur=1, i=1, id1={3:0}, id2={5:0}, j=0, next=0, p=0, prev=0, q=0, x=0] [L718] 0 j = 1 VAL [\old(argc)=49, \old(argv)={50:51}, argc=49, cur=1, i=1, id1={3:0}, id2={5:0}, j=1, next=0, p=0, prev=0, q=0, x=0] [L720] 0 //@ ghost multithreaded = 1; [L720] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, cur=1, i=1, id1={3:0}, id2={5:0}, j=1, next=0, p=0, prev=0, q=0, x=0] [L721] 0 //@ assert ((((((((!multithreaded || ((0 <= next) && (next <= 0))) && (!multithreaded || (0 <= q))) && (!multithreaded || (0 <= x))) && (!multithreaded || (0 <= p))) && (!multithreaded || ((0 <= prev) && (prev <= 0)))) && (!multithreaded || ((0 <= cur) && (cur <= 0)))) && (!multithreaded || (1 <= j))) && (!multithreaded || (1 <= i))); VAL [\old(arg)={0:0}, \old(argc)=49, \old(argv)={50:51}, argc=49, cur=1, i=1, id1={3:0}, id2={5:0}, j=1, next=0, p=0, prev=0, q=0, x=0] - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 681]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 43 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-05-12 12:56:47,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE