/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_THREAD_INSTANCE --traceabstraction.maximal.amount.of.steps.the.threads.are.allowed.to.take.successively 1 --traceabstraction.enable.heuristic.with.loops.as.step.type false --traceabstraction.considered.threads.and.their.maximal.amount.of.steps '"3,2 1,1 2,2"' --traceabstraction.defines.what.statements.are.considered.a.step.in.por LOOP -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.orders-32214ab [2023-05-20 06:54:52,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-05-20 06:54:52,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-05-20 06:54:53,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-05-20 06:54:53,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-05-20 06:54:53,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-05-20 06:54:53,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-05-20 06:54:53,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-05-20 06:54:53,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-05-20 06:54:53,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-05-20 06:54:53,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-05-20 06:54:53,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-05-20 06:54:53,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-05-20 06:54:53,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-05-20 06:54:53,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-05-20 06:54:53,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-05-20 06:54:53,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-05-20 06:54:53,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-05-20 06:54:53,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-05-20 06:54:53,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-05-20 06:54:53,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleepPersistentFixedOrder.epf [2023-05-20 06:54:53,087 INFO L113 SettingsManager]: Loading preferences was successful [2023-05-20 06:54:53,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-05-20 06:54:53,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-05-20 06:54:53,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-05-20 06:54:53,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-05-20 06:54:53,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-05-20 06:54:53,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-05-20 06:54:53,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-05-20 06:54:53,090 INFO L138 SettingsManager]: * Use SBE=true [2023-05-20 06:54:53,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-05-20 06:54:53,090 INFO L138 SettingsManager]: * sizeof long=4 [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * sizeof long double=12 [2023-05-20 06:54:53,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-05-20 06:54:53,092 INFO L138 SettingsManager]: * Use constant arrays=true [2023-05-20 06:54:53,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-05-20 06:54:53,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-05-20 06:54:53,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-05-20 06:54:53,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-05-20 06:54:53,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-05-20 06:54:53,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-20 06:54:53,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-05-20 06:54:53,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-05-20 06:54:53,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-05-20 06:54:53,094 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-05-20 06:54:53,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_THREAD_INSTANCE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Maximal amount of steps the threads are allowed to take successively -> 1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Enable heuristic with loops as step type -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Considered threads and their maximal amount of steps -> 3,2 1,1 2,2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Defines what statements are considered a step in POR -> LOOP [2023-05-20 06:54:53,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-05-20 06:54:53,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-05-20 06:54:53,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-05-20 06:54:53,354 INFO L271 PluginConnector]: Initializing CDTParser... [2023-05-20 06:54:53,355 INFO L275 PluginConnector]: CDTParser initialized [2023-05-20 06:54:53,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-05-20 06:54:53,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3617b0052/24f35b5502e94e2182539a469aa98ad6/FLAG0efc493ac [2023-05-20 06:54:53,931 INFO L306 CDTParser]: Found 1 translation units. [2023-05-20 06:54:53,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-05-20 06:54:53,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3617b0052/24f35b5502e94e2182539a469aa98ad6/FLAG0efc493ac [2023-05-20 06:54:54,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3617b0052/24f35b5502e94e2182539a469aa98ad6 [2023-05-20 06:54:54,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-05-20 06:54:54,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-05-20 06:54:54,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-05-20 06:54:54,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-05-20 06:54:54,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-05-20 06:54:54,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699186ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54, skipping insertion in model container [2023-05-20 06:54:54,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-05-20 06:54:54,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-05-20 06:54:54,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-05-20 06:54:54,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-20 06:54:54,811 INFO L203 MainTranslator]: Completed pre-run [2023-05-20 06:54:54,853 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-05-20 06:54:54,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-05-20 06:54:54,888 INFO L208 MainTranslator]: Completed translation [2023-05-20 06:54:54,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54 WrapperNode [2023-05-20 06:54:54,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-05-20 06:54:54,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-05-20 06:54:54,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-05-20 06:54:54,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-05-20 06:54:54,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,958 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 187 [2023-05-20 06:54:54,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-05-20 06:54:54,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-05-20 06:54:54,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-05-20 06:54:54,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-05-20 06:54:54,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:54,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:55,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:55,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:55,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-05-20 06:54:55,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-05-20 06:54:55,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-05-20 06:54:55,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-05-20 06:54:55,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (1/1) ... [2023-05-20 06:54:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-05-20 06:54:55,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 06:54:55,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-05-20 06:54:55,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-05-20 06:54:55,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-05-20 06:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-05-20 06:54:55,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-05-20 06:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-05-20 06:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-05-20 06:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-05-20 06:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-05-20 06:54:55,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-05-20 06:54:55,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-05-20 06:54:55,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-05-20 06:54:55,097 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-05-20 06:54:55,282 INFO L235 CfgBuilder]: Building ICFG [2023-05-20 06:54:55,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-05-20 06:54:55,679 INFO L276 CfgBuilder]: Performing block encoding [2023-05-20 06:54:55,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-05-20 06:54:55,832 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-05-20 06:54:55,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.05 06:54:55 BoogieIcfgContainer [2023-05-20 06:54:55,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-05-20 06:54:55,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-05-20 06:54:55,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-05-20 06:54:55,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-05-20 06:54:55,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.05 06:54:54" (1/3) ... [2023-05-20 06:54:55,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a3d714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.05 06:54:55, skipping insertion in model container [2023-05-20 06:54:55,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.05 06:54:54" (2/3) ... [2023-05-20 06:54:55,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a3d714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.05 06:54:55, skipping insertion in model container [2023-05-20 06:54:55,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.05 06:54:55" (3/3) ... [2023-05-20 06:54:55,845 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-05-20 06:54:55,856 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-05-20 06:54:55,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-05-20 06:54:55,865 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-05-20 06:54:55,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-05-20 06:54:55,961 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-05-20 06:54:56,000 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 06:54:56,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-05-20 06:54:56,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 06:54:56,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-05-20 06:54:56,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-05-20 06:54:56,045 INFO L162 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-05-20 06:54:56,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-05-20 06:54:56,077 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=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@a5be829, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-05-20 06:54:56,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-05-20 06:54:56,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 06:54:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 06:54:56,416 INFO L85 PathProgramCache]: Analyzing trace with hash 449071885, now seen corresponding path program 1 times [2023-05-20 06:54:56,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 06:54:56,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608533779] [2023-05-20 06:54:56,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 06:54:56,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 06:54:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 06:54:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-20 06:54:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 06:54:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608533779] [2023-05-20 06:54:56,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608533779] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 06:54:56,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 06:54:56,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-05-20 06:54:56,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847626705] [2023-05-20 06:54:56,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 06:54:56,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-05-20 06:54:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 06:54:56,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-05-20 06:54:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-05-20 06:54:56,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 06:54:56,912 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 06:54:56,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2023-05-20 06:54:56,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 06:54:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 06:54:56,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-05-20 06:54:56,955 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 06:54:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 06:54:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash 700970053, now seen corresponding path program 1 times [2023-05-20 06:54:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 06:54:56,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942980433] [2023-05-20 06:54:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 06:54:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 06:54:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 06:54:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-20 06:54:57,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 06:54:57,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942980433] [2023-05-20 06:54:57,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942980433] provided 1 perfect and 0 imperfect interpolant sequences [2023-05-20 06:54:57,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-05-20 06:54:57,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-05-20 06:54:57,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318991406] [2023-05-20 06:54:57,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-05-20 06:54:57,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-05-20 06:54:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 06:54:57,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-05-20 06:54:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-05-20 06:54:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 06:54:57,163 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 06:54:57,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2023-05-20 06:54:57,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 06:54:57,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 06:54:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 06:54:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-05-20 06:54:57,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-05-20 06:54:57,386 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 06:54:57,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 06:54:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash -903111879, now seen corresponding path program 1 times [2023-05-20 06:54:57,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 06:54:57,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230064591] [2023-05-20 06:54:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 06:54:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 06:54:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 06:54:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-20 06:54:58,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-05-20 06:54:58,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230064591] [2023-05-20 06:54:58,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230064591] provided 0 perfect and 1 imperfect interpolant sequences [2023-05-20 06:54:58,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892529181] [2023-05-20 06:54:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 06:54:58,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-05-20 06:54:58,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-05-20 06:54:58,973 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) [2023-05-20 06:54:58,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-05-20 06:54:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-05-20 06:54:59,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 74 conjunts are in the unsatisfiable core [2023-05-20 06:54:59,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-05-20 06:55:00,114 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-05-20 06:55:00,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 15 [2023-05-20 06:55:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-20 06:55:00,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-05-20 06:55:00,834 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-05-20 06:55:00,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892529181] provided 0 perfect and 2 imperfect interpolant sequences [2023-05-20 06:55:00,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-05-20 06:55:00,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 10] total 39 [2023-05-20 06:55:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51198163] [2023-05-20 06:55:00,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-05-20 06:55:00,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-05-20 06:55:00,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-05-20 06:55:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-05-20 06:55:00,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1286, Unknown=17, NotChecked=0, Total=1482 [2023-05-20 06:55:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-05-20 06:55:00,838 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-05-20 06:55:00,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.282051282051283) internal successors, (323), 39 states have internal predecessors, (323), 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) [2023-05-20 06:55:00,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-05-20 06:55:00,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-05-20 06:55:00,839 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-05-20 06:55:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-05-20 06:55:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-05-20 06:55:01,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-05-20 06:55:01,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-05-20 06:55:01,784 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 [2023-05-20 06:55:01,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-05-20 06:55:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-05-20 06:55:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1688122661, now seen corresponding path program 1 times [2023-05-20 06:55:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-05-20 06:55:01,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100837528] [2023-05-20 06:55:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-05-20 06:55:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-05-20 06:55:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-20 06:55:01,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-05-20 06:55:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-05-20 06:55:01,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-05-20 06:55:01,982 INFO L359 BasicCegarLoop]: Counterexample is feasible [2023-05-20 06:55:01,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-05-20 06:55:01,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-05-20 06:55:01,993 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-05-20 06:55:01,994 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2023-05-20 06:55:01,997 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-05-20 06:55:01,997 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-05-20 06:55:02,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.05 06:55:02 BasicIcfg [2023-05-20 06:55:02,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-05-20 06:55:02,128 INFO L158 Benchmark]: Toolchain (without parser) took 7706.66ms. Allocated memory was 170.9MB in the beginning and 247.5MB in the end (delta: 76.5MB). Free memory was 144.1MB in the beginning and 111.5MB in the end (delta: 32.6MB). Peak memory consumption was 109.6MB. Max. memory is 8.0GB. [2023-05-20 06:55:02,134 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-05-20 06:55:02,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.19ms. Allocated memory is still 170.9MB. Free memory was 144.0MB in the beginning and 138.2MB in the end (delta: 5.8MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. [2023-05-20 06:55:02,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.32ms. Allocated memory is still 170.9MB. Free memory was 137.9MB in the beginning and 135.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-05-20 06:55:02,140 INFO L158 Benchmark]: Boogie Preprocessor took 48.85ms. Allocated memory is still 170.9MB. Free memory was 135.3MB in the beginning and 133.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-05-20 06:55:02,140 INFO L158 Benchmark]: RCFGBuilder took 825.58ms. Allocated memory is still 170.9MB. Free memory was 133.4MB in the beginning and 96.9MB in the end (delta: 36.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2023-05-20 06:55:02,141 INFO L158 Benchmark]: TraceAbstraction took 6290.72ms. Allocated memory was 170.9MB in the beginning and 247.5MB in the end (delta: 76.5MB). Free memory was 95.9MB in the beginning and 111.5MB in the end (delta: -15.5MB). Peak memory consumption was 61.8MB. Max. memory is 8.0GB. [2023-05-20 06:55:02,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 127.9MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 466.19ms. Allocated memory is still 170.9MB. Free memory was 144.0MB in the beginning and 138.2MB in the end (delta: 5.8MB). Peak memory consumption was 7.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 69.32ms. Allocated memory is still 170.9MB. Free memory was 137.9MB in the beginning and 135.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 48.85ms. Allocated memory is still 170.9MB. Free memory was 135.3MB in the beginning and 133.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 825.58ms. Allocated memory is still 170.9MB. Free memory was 133.4MB in the beginning and 96.9MB in the end (delta: 36.4MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. * TraceAbstraction took 6290.72ms. Allocated memory was 170.9MB in the beginning and 247.5MB in the end (delta: 76.5MB). Free memory was 95.9MB in the beginning and 111.5MB in the end (delta: -15.5MB). Peak memory consumption was 61.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2547, independent: 2213, independent conditional: 569, independent unconditional: 1644, dependent: 334, dependent conditional: 315, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 569, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 569, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1435, independent: 1416, independent conditional: 0, independent unconditional: 1416, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1435, independent: 1396, independent conditional: 0, independent unconditional: 1396, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 176, independent: 103, independent conditional: 0, independent unconditional: 103, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2232, independent: 797, independent conditional: 0, independent unconditional: 797, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1435, unknown conditional: 0, unknown unconditional: 1435] , Statistics on independence cache: Total cache size (in pairs): 1435, Positive cache size: 1416, Positive conditional cache size: 0, Positive unconditional cache size: 1416, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 315 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.3s, Number of persistent set computation: 146, Number of trivial persistent sets: 104, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1663, independent: 1644, independent conditional: 0, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2547, independent: 2213, independent conditional: 569, independent unconditional: 1644, dependent: 334, dependent conditional: 315, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 569, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 569, independent unconditional: 1644, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2232, independent: 2213, independent conditional: 0, independent unconditional: 2213, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1435, independent: 1416, independent conditional: 0, independent unconditional: 1416, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1435, independent: 1396, independent conditional: 0, independent unconditional: 1396, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 176, independent: 103, independent conditional: 0, independent unconditional: 103, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2232, independent: 797, independent conditional: 0, independent unconditional: 797, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1435, unknown conditional: 0, unknown unconditional: 1435] , Statistics on independence cache: Total cache size (in pairs): 1435, Positive cache size: 1416, Positive conditional cache size: 0, Positive unconditional cache size: 1416, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0, Independence queries for same thread: 315 - CounterExampleResult [Line: 759]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L714] 0 int memory[(2*320+1)]; [L717] 0 int top; VAL [top={3:0}] [L769] 0 int m2 = 0; VAL [m2={4:0}, top={3:0}] [L715] 0 int next_alloc_idx = 1; VAL [m2={4:0}, next_alloc_idx=1, top={3:0}] [L770] 0 int state = 0; VAL [m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L716] 0 int m = 0; VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L788] 0 pthread_t t; VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, t={8:0}, top={3:0}] [L789] COND TRUE 0 1 VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, t={8:0}, top={3:0}] [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, pthread_create(&t, 0, thr1, 0)=0, state=0, t={8:0}, top={3:0}] [L773] CALL 1 __VERIFIER_atomic_acquire(&m2) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L773] RET 1 __VERIFIER_atomic_acquire(&m2) [L776] 1 case 0: VAL [arg={0:0}, arg={0:0}, m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L777] CALL 1 EBStack_init() [L732] 1 top = 0 VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, state=0, top={3:0}] [L777] RET 1 EBStack_init() [L778] 1 state = 1 VAL [arg={0:0}, arg={0:0}, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L779] 1 case 1: VAL [arg={0:0}, arg={0:0}, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L780] CALL 1 __VERIFIER_atomic_release(&m2) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L780] RET 1 __VERIFIER_atomic_release(&m2) [L781] CALL 1 push_loop() [L762] 1 int r = -1; VAL [m={5:0}, m2={4:0}, next_alloc_idx=1, r=-1, state=1, top={3:0}] [L763] 1 int arg = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=7, arg=7, m={5:0}, m2={4:0}, next_alloc_idx=1, r=-1, state=1, top={3:0}] [L764] COND TRUE 1 1 VAL [arg=7, m={5:0}, m2={4:0}, next_alloc_idx=1, r=-1, state=1, top={3:0}] [L765] CALL, EXPR 1 push(arg) [L741] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=7, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=-1, next_alloc_idx=1, oldTop=-1, state=1, top={3:0}] [L742] CALL, EXPR 1 index_malloc() [L719] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L720] CALL 1 __VERIFIER_atomic_acquire(&m) [L691] EXPR 1 \read(*m) [L691] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L691] RET 1 assume_abort_if_not(*m==0) [L692] 1 *m = 1 [L720] RET 1 __VERIFIER_atomic_acquire(&m) [L721] COND FALSE 1 !(next_alloc_idx+2-1 > (2*320+1)) VAL [curr_alloc_idx=-1, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L725] 1 curr_alloc_idx = next_alloc_idx VAL [curr_alloc_idx=1, m={5:0}, m2={4:0}, next_alloc_idx=1, state=1, top={3:0}] [L726] 1 next_alloc_idx += 2 VAL [curr_alloc_idx=1, m={5:0}, m2={4:0}, next_alloc_idx=3, state=1, top={3:0}] [L727] CALL 1 __VERIFIER_atomic_release(&m) [L696] EXPR 1 \read(*m) [L696] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L696] RET 1 assume_abort_if_not(*m==1) [L697] 1 *m = 0 [L727] RET 1 __VERIFIER_atomic_release(&m) [L729] 1 return curr_alloc_idx; VAL [\result=1, curr_alloc_idx=1, m={5:0}, m2={4:0}, next_alloc_idx=3, state=1, top={3:0}] [L742] RET, EXPR 1 index_malloc() [L742] 1 newTop = index_malloc() VAL [\old(d)=7, casret={6:0}, d=7, index_malloc()=1, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L743] COND FALSE 1 !(newTop == 0) VAL [\old(d)=7, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L746] 1 memory[newTop+0] = d VAL [\old(d)=7, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L789] COND TRUE 0 1 VAL [m={5:0}, m2={4:0}, next_alloc_idx=3, state=1, t={8:0}, top={3:0}] [L789] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m={5:0}, m2={4:0}, next_alloc_idx=3, pthread_create(&t, 0, thr1, 0)=1, state=1, t={8:0}, top={3:0}] [L747] COND TRUE 1 1 VAL [\old(d)=7, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L748] EXPR 1 \read(top) VAL [\old(d)=7, \read(top)=0, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top={3:0}] [L748] 1 oldTop = top VAL [\old(d)=7, \read(top)=0, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L749] 1 memory[newTop+1] = oldTop VAL [\old(d)=7, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L750] CALL 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L705] EXPR 1 \read(*v) [L705] COND TRUE 1 *v == e [L707] 1 *v = u [L707] 1 *r = 1 [L750] RET 1 __VERIFIER_atomic_CAS(&top,oldTop,newTop,&casret) [L751] EXPR 1 \read(casret) VAL [\old(d)=7, \read(casret)=1, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L751] COND TRUE 1 casret==1 VAL [\old(d)=7, \read(casret)=1, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L752] 1 return 1; VAL [\old(d)=7, \result=1, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L741] 1 int oldTop = -1, newTop = -1, casret = -1; VAL [\old(d)=7, \result=1, casret={6:0}, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L752] 1 return 1; VAL [\old(d)=7, \result=1, d=7, m={5:0}, m2={4:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top={3:0}] [L765] RET, EXPR 1 push(arg) [L765] 1 r = push(arg) VAL [arg=7, m={5:0}, m2={4:0}, next_alloc_idx=3, push(arg)=1, r=1, state=1, top={3:0}] [L766] CALL 1 __VERIFIER_atomic_assert(r) [L759] EXPR 1 !r || !isEmpty() [L759] CALL, EXPR 1 isEmpty() [L735] EXPR 1 \read(top) [L735] COND FALSE 1 !(top == 0) [L738] 1 return 0; [L759] RET, EXPR 1 isEmpty() [L759] EXPR 1 !r || !isEmpty() [L759] COND TRUE 1 !(!(!r || !isEmpty())) [L759] 1 reach_error() VAL [\old(r)=1, m={5:0}, m2={4:0}, next_alloc_idx=3, r=1, state=1, top={3:0}] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 191 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.3s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 35, 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, 3.7s InterpolantComputationTime, 554 NumberOfCodeBlocks, 554 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 594 ConstructedInterpolants, 4 QuantifiedInterpolants, 3287 SizeOfPredicates, 22 NumberOfNonLiveVariables, 473 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 135/150 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! [2023-05-20 06:55:02,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2023-05-20 06:55:02,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...