./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2cc22fce Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread/twostage_3.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-2cc22fc-m [2024-07-22 11:57:50,137 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-22 11:57:50,209 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-07-22 11:57:50,213 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-22 11:57:50,214 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-22 11:57:50,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-22 11:57:50,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-22 11:57:50,236 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-22 11:57:50,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-22 11:57:50,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-22 11:57:50,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-22 11:57:50,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-22 11:57:50,241 INFO L153 SettingsManager]: * Use SBE=true [2024-07-22 11:57:50,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-22 11:57:50,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-22 11:57:50,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-22 11:57:50,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-07-22 11:57:50,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-22 11:57:50,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-22 11:57:50,244 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-22 11:57:50,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-22 11:57:50,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-22 11:57:50,245 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-22 11:57:50,245 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-22 11:57:50,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-22 11:57:50,246 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-22 11:57:50,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-22 11:57:50,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-22 11:57:50,247 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-22 11:57:50,247 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-22 11:57:50,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-22 11:57:50,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-22 11:57:50,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-22 11:57:50,249 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-22 11:57:50,249 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-07-22 11:57:50,249 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-22 11:57:50,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-07-22 11:57:50,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-22 11:57:50,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-22 11:57:50,250 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-22 11:57:50,250 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-22 11:57:50,251 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-22 11:57:50,251 INFO L153 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2024-07-22 11:57:50,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-22 11:57:50,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-22 11:57:50,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-22 11:57:50,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-22 11:57:50,505 INFO L274 PluginConnector]: CDTParser initialized [2024-07-22 11:57:50,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/twostage_3.i [2024-07-22 11:57:51,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-22 11:57:51,974 INFO L384 CDTParser]: Found 1 translation units. [2024-07-22 11:57:51,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i [2024-07-22 11:57:51,999 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fdd61e89f/d5b53abe69a6447c80082e232e48e0de/FLAG9dc6917f8 [2024-07-22 11:57:52,013 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/fdd61e89f/d5b53abe69a6447c80082e232e48e0de [2024-07-22 11:57:52,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-22 11:57:52,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-22 11:57:52,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-22 11:57:52,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-22 11:57:52,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-22 11:57:52,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c0b3954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52, skipping insertion in model container [2024-07-22 11:57:52,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,085 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-22 11:57:52,592 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[59093,59106] [2024-07-22 11:57:52,633 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:57:52,634 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:57:52,635 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-22 11:57:52,643 INFO L202 MainTranslator]: Completed pre-run [2024-07-22 11:57:52,704 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[59093,59106] [2024-07-22 11:57:52,725 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:57:52,726 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:57:52,727 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-22 11:57:52,796 INFO L206 MainTranslator]: Completed translation [2024-07-22 11:57:52,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52 WrapperNode [2024-07-22 11:57:52,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-22 11:57:52,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-22 11:57:52,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-22 11:57:52,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-22 11:57:52,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,855 INFO L138 Inliner]: procedures = 373, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 140 [2024-07-22 11:57:52,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-22 11:57:52,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-22 11:57:52,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-22 11:57:52,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-22 11:57:52,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-22 11:57:52,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-22 11:57:52,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-22 11:57:52,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-22 11:57:52,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (1/1) ... [2024-07-22 11:57:52,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-22 11:57:52,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 11:57:52,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-07-22 11:57:52,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-07-22 11:57:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2024-07-22 11:57:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2024-07-22 11:57:52,993 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2024-07-22 11:57:52,993 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2024-07-22 11:57:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-07-22 11:57:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-07-22 11:57:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-07-22 11:57:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-07-22 11:57:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-07-22 11:57:52,994 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-07-22 11:57:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-07-22 11:57:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-22 11:57:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-07-22 11:57:52,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-22 11:57:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-22 11:57:52,998 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-22 11:57:53,177 INFO L244 CfgBuilder]: Building ICFG [2024-07-22 11:57:53,179 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-22 11:57:53,526 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-22 11:57:53,526 INFO L293 CfgBuilder]: Performing block encoding [2024-07-22 11:57:53,755 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-22 11:57:53,756 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-07-22 11:57:53,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:57:53 BoogieIcfgContainer [2024-07-22 11:57:53,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-22 11:57:53,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-22 11:57:53,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-22 11:57:53,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-22 11:57:53,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:57:52" (1/3) ... [2024-07-22 11:57:53,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6690dd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:57:53, skipping insertion in model container [2024-07-22 11:57:53,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:57:52" (2/3) ... [2024-07-22 11:57:53,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6690dd06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:57:53, skipping insertion in model container [2024-07-22 11:57:53,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:57:53" (3/3) ... [2024-07-22 11:57:53,763 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2024-07-22 11:57:53,773 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-22 11:57:53,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-22 11:57:53,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-22 11:57:53,782 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-22 11:57:53,849 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-07-22 11:57:53,883 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 11:57:53,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 11:57:53,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 11:57:53,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-22 11:57:53,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-07-22 11:57:53,913 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 11:57:53,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == funcBThread1of1ForFork1 ======== [2024-07-22 11:57:53,930 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=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;@f496eb9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 11:57:53,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 11:57:54,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [funcBErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 11:57:54,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 11:57:54,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1846882738, now seen corresponding path program 1 times [2024-07-22 11:57:54,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 11:57:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440826187] [2024-07-22 11:57:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 11:57:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 11:57:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 11:57:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 11:57:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 11:57:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440826187] [2024-07-22 11:57:54,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440826187] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 11:57:54,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 11:57:54,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-07-22 11:57:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893517570] [2024-07-22 11:57:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 11:57:54,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-07-22 11:57:54,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 11:57:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-07-22 11:57:54,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-07-22 11:57:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:57:54,760 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 11:57:54,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 11:57:54,761 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:57:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 11:57:55,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-07-22 11:57:55,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [funcBErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 11:57:55,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 11:57:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1506294770, now seen corresponding path program 2 times [2024-07-22 11:57:55,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 11:57:55,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13077676] [2024-07-22 11:57:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 11:57:55,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 11:57:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 11:57:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 11:57:55,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-22 11:57:55,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13077676] [2024-07-22 11:57:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13077676] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-22 11:57:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364925642] [2024-07-22 11:57:55,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 11:57:55,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-22 11:57:55,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 11:57:55,417 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-22 11:57:55,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-07-22 11:57:55,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 11:57:55,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 11:57:55,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2024-07-22 11:57:55,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 11:57:55,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-07-22 11:57:55,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-07-22 11:57:55,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-07-22 11:57:55,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-07-22 11:57:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 11:57:55,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-07-22 11:57:55,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364925642] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 11:57:55,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-07-22 11:57:55,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-07-22 11:57:55,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580670965] [2024-07-22 11:57:55,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 11:57:55,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-07-22 11:57:55,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-22 11:57:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-07-22 11:57:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-07-22 11:57:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:57:55,723 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 11:57:55,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 11:57:55,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 11:57:55,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:57:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 11:57:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-22 11:57:55,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-07-22 11:57:56,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-07-22 11:57:56,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [funcBErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 11:57:56,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 11:57:56,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1389779958, now seen corresponding path program 3 times [2024-07-22 11:57:56,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-22 11:57:56,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993804149] [2024-07-22 11:57:56,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 11:57:56,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-22 11:57:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 11:57:56,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-22 11:57:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 11:57:56,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-07-22 11:57:56,172 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-22 11:57:56,173 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-22 11:57:56,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-07-22 11:57:56,182 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2024-07-22 11:57:56,184 INFO L308 ceAbstractionStarter]: Result for error location funcBThread1of1ForFork1 was UNSAFE (1/2) [2024-07-22 11:57:56,186 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-07-22 11:57:56,186 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-07-22 11:57:56,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 11:57:56 BasicIcfg [2024-07-22 11:57:56,246 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-07-22 11:57:56,246 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-07-22 11:57:56,246 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-07-22 11:57:56,246 INFO L274 PluginConnector]: Witness Printer initialized [2024-07-22 11:57:56,247 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:57:53" (3/4) ... [2024-07-22 11:57:56,248 INFO L140 WitnessPrinter]: No result that supports witness generation found [2024-07-22 11:57:56,249 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-07-22 11:57:56,250 INFO L158 Benchmark]: Toolchain (without parser) took 4233.51ms. Allocated memory was 165.7MB in the beginning and 257.9MB in the end (delta: 92.3MB). Free memory was 105.7MB in the beginning and 85.0MB in the end (delta: 20.7MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2024-07-22 11:57:56,250 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-22 11:57:56,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 779.66ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 63.1MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-07-22 11:57:56,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.15ms. Allocated memory is still 165.7MB. Free memory was 63.1MB in the beginning and 60.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-22 11:57:56,251 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 165.7MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-22 11:57:56,251 INFO L158 Benchmark]: RCFGBuilder took 853.17ms. Allocated memory was 165.7MB in the beginning and 257.9MB in the end (delta: 92.3MB). Free memory was 58.3MB in the beginning and 195.1MB in the end (delta: -136.8MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2024-07-22 11:57:56,252 INFO L158 Benchmark]: TraceAbstraction took 2487.43ms. Allocated memory is still 257.9MB. Free memory was 194.1MB in the beginning and 85.0MB in the end (delta: 109.0MB). Peak memory consumption was 110.1MB. Max. memory is 16.1GB. [2024-07-22 11:57:56,252 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 257.9MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-22 11:57:56,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 779.66ms. Allocated memory is still 165.7MB. Free memory was 105.7MB in the beginning and 63.1MB in the end (delta: 42.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.15ms. Allocated memory is still 165.7MB. Free memory was 63.1MB in the beginning and 60.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 165.7MB. Free memory was 60.4MB in the beginning and 58.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 853.17ms. Allocated memory was 165.7MB in the beginning and 257.9MB in the end (delta: 92.3MB). Free memory was 58.3MB in the beginning and 195.1MB in the end (delta: -136.8MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2487.43ms. Allocated memory is still 257.9MB. Free memory was 194.1MB in the beginning and 85.0MB in the end (delta: 109.0MB). Peak memory consumption was 110.1MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 257.9MB. Free memory is still 85.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2319, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 161, dependent conditional: 129, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 5, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1211, independent: 1177, independent conditional: 2, independent unconditional: 1175, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1211, independent: 1146, independent conditional: 0, independent unconditional: 1146, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 161, independent: 93, independent conditional: 5, independent unconditional: 89, dependent: 67, dependent conditional: 4, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2201, independent: 981, independent conditional: 0, independent unconditional: 981, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1211, unknown conditional: 4, unknown unconditional: 1207] , Statistics on independence cache: Total cache size (in pairs): 1211, Positive cache size: 1177, Positive conditional cache size: 2, Positive unconditional cache size: 1175, Negative cache size: 34, Negative conditional cache size: 2, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 2, Independence queries for same thread: 125 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.2s, Number of persistent set computation: 220, Number of trivial persistent sets: 173, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1297, independent: 1265, independent conditional: 0, independent unconditional: 1265, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2319, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 161, dependent conditional: 129, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 5, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1211, independent: 1177, independent conditional: 2, independent unconditional: 1175, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1211, independent: 1146, independent conditional: 0, independent unconditional: 1146, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 161, independent: 93, independent conditional: 5, independent unconditional: 89, dependent: 67, dependent conditional: 4, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2201, independent: 981, independent conditional: 0, independent unconditional: 981, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1211, unknown conditional: 4, unknown unconditional: 1207] , Statistics on independence cache: Total cache size (in pairs): 1211, Positive cache size: 1177, Positive conditional cache size: 2, Positive unconditional cache size: 1175, Negative cache size: 34, Negative conditional cache size: 2, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 2, Independence queries for same thread: 125 - UnprovableResult [Line: 1272]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1284. Possible FailurePath: [L1236] 0 static int iTThreads = 2; [L1237] 0 static int iRThreads = 1; [L1238] 0 static int data1Value = 0; [L1239] 0 static int data2Value = 0; [L1240] 0 pthread_mutex_t *data1Lock; [L1241] 0 pthread_mutex_t *data2Lock; [L1278] 0 int i,err; [L1279] COND TRUE 0 argc != 1 [L1280] COND FALSE 0 !(argc != 3) [L1288] COND FALSE 0 !(iTThreads > 100000 || iRThreads > 100000) [L1291] 0 data1Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1292] 0 data2Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1293] EXPR 0 err = pthread_mutex_init(data1Lock, ((void *)0)) [L1293] COND FALSE 0 !(0 != (err = pthread_mutex_init(data1Lock, ((void *)0)))) [L1297] EXPR 0 err = pthread_mutex_init(data2Lock, ((void *)0)) [L1297] COND FALSE 0 !(0 != (err = pthread_mutex_init(data2Lock, ((void *)0)))) [L1301] 0 pthread_t tPool[iTThreads]; [L1302] 0 pthread_t rPool[iRThreads]; [L1303] 0 i = 0 VAL [\old(argc)=3, \old(argv)={50:53}, argc=3, data1Lock={-3:0}, data1Value=0, data2Lock={-2:0}, data2Value=0, err=0, i=0, iRThreads=1, iTThreads=1, rPool={5:0}, tPool={6:0}] [L1303] COND TRUE 0 i < iTThreads [L1304] EXPR, FCALL, FORK 0 pthread_create(&tPool[i], ((void *)0), &funcA, ((void *)0)) VAL [\old(argc)=3, \old(argv)={50:53}, \old(param)={0:0}, argc=3, data1Lock={-3:0}, data1Value=0, data2Lock={-2:0}, data2Value=0, err=0, i=0, iRThreads=1, iTThreads=1, rPool={5:0}, tPool={6:0}] [L1245] 1 int t1 = -1; VAL [\old(param)={0:0}, data1Lock={-3:0}, data1Value=0, data2Lock={-2:0}, data2Value=0, iRThreads=1, iTThreads=1, param={0:0}, t1=-1] [L1247] 1 data1Value = 1 VAL [\old(param)={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, iRThreads=1, iTThreads=1, param={0:0}, t1=-1] [L1250] 1 t1 = data1Value VAL [\old(param)={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, iRThreads=1, iTThreads=1, param={0:0}, t1=1] [L1304] EXPR 0 err = pthread_create(&tPool[i], ((void *)0), &funcA, ((void *)0)) [L1304] COND FALSE 0 !(0 != (err = pthread_create(&tPool[i], ((void *)0), &funcA, ((void *)0)))) [L1303] 0 i++ VAL [\old(argc)=3, \old(argv)={50:53}, \old(param)={0:0}, argc=3, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, err=0, i=1, iRThreads=1, iTThreads=1, param={0:0}, rPool={5:0}, t1=1, tPool={6:0}] [L1303] COND FALSE 0 !(i < iTThreads) [L1309] 0 i = 0 VAL [\old(argc)=3, \old(argv)={50:53}, \old(param)={0:0}, argc=3, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, err=0, i=0, iRThreads=1, iTThreads=1, param={0:0}, rPool={5:0}, t1=1, tPool={6:0}] [L1309] COND TRUE 0 i < iRThreads [L1310] FCALL, FORK 0 pthread_create(&rPool[i], ((void *)0), &funcB, ((void *)0)) VAL [\old(argc)=3, \old(argv)={50:53}, \old(param)={0:0}, \old(param)={0:0}, argc=3, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, err=0, i=0, iRThreads=1, iTThreads=1, param={0:0}, rPool={5:0}, t1=1, tPool={6:0}] [L1258] 2 int t1 = -1; [L1259] 2 int t2 = -1; VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, iRThreads=1, iTThreads=1, param={0:0}, param={0:0}, t1=-1, t1=1, t2=-1] [L1261] COND FALSE 2 !(data1Value == 0) [L1265] 2 t1 = data1Value VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, iRThreads=1, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=-1] [L1268] 2 t2 = data2Value VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=0, iRThreads=1, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=0] [L1253] 1 data2Value = t1 + 1 VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=2, iRThreads=1, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=0] [L1255] 1 return ((void *)0); [L1270] COND TRUE 2 t2 != (t1 + 1) [L1272] 2 reach_error() VAL [\old(param)={0:0}, \old(param)={0:0}, \result={0:0}, data1Lock={-3:0}, data1Value=1, data2Lock={-2:0}, data2Value=2, iRThreads=1, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: funcBThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.6s, 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: 11, 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, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 SizeOfPredicates, 1 NumberOfNonLiveVariables, 232 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/3 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 could not prove your program: unable to determine feasibility of some traces [2024-07-22 11:57:56,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2024-07-22 11:57:56,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread/twostage_3.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-2cc22fc-m [2024-07-22 11:57:58,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-22 11:57:58,859 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2024-07-22 11:57:58,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-22 11:57:58,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-22 11:57:58,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-22 11:57:58,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-22 11:57:58,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-22 11:57:58,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-22 11:57:58,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-22 11:57:58,913 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-22 11:57:58,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-22 11:57:58,914 INFO L153 SettingsManager]: * Use SBE=true [2024-07-22 11:57:58,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-22 11:57:58,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-22 11:57:58,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-22 11:57:58,916 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-22 11:57:58,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-22 11:57:58,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-22 11:57:58,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-22 11:57:58,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-22 11:57:58,918 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-07-22 11:57:58,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-22 11:57:58,919 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-07-22 11:57:58,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-22 11:57:58,920 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-22 11:57:58,920 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-22 11:57:58,921 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-22 11:57:58,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-22 11:57:58,921 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-22 11:57:58,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-22 11:57:58,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-22 11:57:58,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-22 11:57:58,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-22 11:57:58,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-22 11:57:58,924 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-07-22 11:57:58,924 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-22 11:57:58,924 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-07-22 11:57:58,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-22 11:57:58,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-22 11:57:58,925 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-22 11:57:58,926 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-22 11:57:58,926 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-22 11:57:58,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-07-22 11:57:58,927 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1032ef3fe166161226ca7e81ea27802cfc3f516ad1e4b45c387461fe1ddeccf8 [2024-07-22 11:57:59,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-22 11:57:59,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-22 11:57:59,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-22 11:57:59,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-22 11:57:59,306 INFO L274 PluginConnector]: CDTParser initialized [2024-07-22 11:57:59,307 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/twostage_3.i [2024-07-22 11:58:00,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-22 11:58:00,925 INFO L384 CDTParser]: Found 1 translation units. [2024-07-22 11:58:00,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i [2024-07-22 11:58:00,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/00aaa5025/c73a22b8a7e14a79ab9cf59b5383345f/FLAGba60aa583 [2024-07-22 11:58:00,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/00aaa5025/c73a22b8a7e14a79ab9cf59b5383345f [2024-07-22 11:58:00,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-22 11:58:00,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-22 11:58:00,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-22 11:58:00,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-22 11:58:00,976 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-22 11:58:00,977 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:58:00" (1/1) ... [2024-07-22 11:58:00,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4218f092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:00, skipping insertion in model container [2024-07-22 11:58:00,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:58:00" (1/1) ... [2024-07-22 11:58:01,030 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-22 11:58:01,616 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[59093,59106] [2024-07-22 11:58:01,648 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:58:01,649 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:58:01,650 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-22 11:58:01,662 INFO L202 MainTranslator]: Completed pre-run [2024-07-22 11:58:01,714 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/twostage_3.i[59093,59106] [2024-07-22 11:58:01,727 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:58:01,733 WARN L1645 CHandler]: Possible shadowing of function lock [2024-07-22 11:58:01,734 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-22 11:58:01,826 INFO L206 MainTranslator]: Completed translation [2024-07-22 11:58:01,826 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01 WrapperNode [2024-07-22 11:58:01,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-22 11:58:01,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-22 11:58:01,828 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-22 11:58:01,828 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-22 11:58:01,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,873 INFO L138 Inliner]: procedures = 376, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 139 [2024-07-22 11:58:01,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-22 11:58:01,875 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-22 11:58:01,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-22 11:58:01,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-22 11:58:01,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,911 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-22 11:58:01,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-22 11:58:01,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-22 11:58:01,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-22 11:58:01,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (1/1) ... [2024-07-22 11:58:01,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-22 11:58:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 11:58:01,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-07-22 11:58:01,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-07-22 11:58:01,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-07-22 11:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2024-07-22 11:58:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2024-07-22 11:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2024-07-22 11:58:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2024-07-22 11:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-07-22 11:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-07-22 11:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-07-22 11:58:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-07-22 11:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-07-22 11:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-07-22 11:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-07-22 11:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-22 11:58:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-22 11:58:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-22 11:58:02,002 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-22 11:58:02,140 INFO L244 CfgBuilder]: Building ICFG [2024-07-22 11:58:02,142 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-22 11:58:02,457 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-22 11:58:02,458 INFO L293 CfgBuilder]: Performing block encoding [2024-07-22 11:58:02,735 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-22 11:58:02,736 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-07-22 11:58:02,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:58:02 BoogieIcfgContainer [2024-07-22 11:58:02,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-22 11:58:02,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-22 11:58:02,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-22 11:58:02,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-22 11:58:02,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:58:00" (1/3) ... [2024-07-22 11:58:02,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca923fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:58:02, skipping insertion in model container [2024-07-22 11:58:02,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:58:01" (2/3) ... [2024-07-22 11:58:02,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca923fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:58:02, skipping insertion in model container [2024-07-22 11:58:02,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:58:02" (3/3) ... [2024-07-22 11:58:02,746 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2024-07-22 11:58:02,753 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-22 11:58:02,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-22 11:58:02,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-22 11:58:02,762 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-22 11:58:02,805 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-07-22 11:58:02,846 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 11:58:02,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-22 11:58:02,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-22 11:58:02,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-22 11:58:02,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-07-22 11:58:02,912 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-22 11:58:02,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == funcBThread1of1ForFork1 ======== [2024-07-22 11:58:02,930 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=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;@5e906a83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-22 11:58:02,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-07-22 11:58:03,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [funcBErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 11:58:03,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 11:58:03,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1128641970, now seen corresponding path program 1 times [2024-07-22 11:58:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-07-22 11:58:03,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836415597] [2024-07-22 11:58:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-22 11:58:03,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-22 11:58:03,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-07-22 11:58:03,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-07-22 11:58:03,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-07-22 11:58:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-22 11:58:03,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2024-07-22 11:58:03,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 11:58:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 11:58:03,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-07-22 11:58:03,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-07-22 11:58:03,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836415597] [2024-07-22 11:58:03,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836415597] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 11:58:03,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 11:58:03,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-07-22 11:58:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132840499] [2024-07-22 11:58:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 11:58:03,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-07-22 11:58:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-07-22 11:58:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-07-22 11:58:03,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-07-22 11:58:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:58:03,716 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 11:58:03,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 11:58:03,717 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:58:04,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 11:58:04,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-07-22 11:58:04,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-22 11:58:04,293 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [funcBErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 11:58:04,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 11:58:04,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2070431758, now seen corresponding path program 2 times [2024-07-22 11:58:04,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-07-22 11:58:04,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030085473] [2024-07-22 11:58:04,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-22 11:58:04,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-22 11:58:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-07-22 11:58:04,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-07-22 11:58:04,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-07-22 11:58:04,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-07-22 11:58:04,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-22 11:58:04,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2024-07-22 11:58:04,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-22 11:58:04,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-07-22 11:58:04,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-07-22 11:58:04,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-07-22 11:58:04,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-07-22 11:58:04,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-22 11:58:04,670 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-07-22 11:58:04,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-07-22 11:58:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030085473] [2024-07-22 11:58:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030085473] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-22 11:58:04,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-22 11:58:04,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-07-22 11:58:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964508241] [2024-07-22 11:58:04,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-22 11:58:04,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-07-22 11:58:04,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-07-22 11:58:04,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-07-22 11:58:04,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-07-22 11:58:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:58:04,675 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-22 11:58:04,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-22 11:58:04,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2024-07-22 11:58:04,676 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-22 11:58:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-22 11:58:04,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-22 11:58:04,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-07-22 11:58:05,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-22 11:58:05,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting funcBErr0ASSERT_VIOLATIONERROR_FUNCTION === [funcBErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-07-22 11:58:05,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-22 11:58:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash -671539190, now seen corresponding path program 3 times [2024-07-22 11:58:05,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-07-22 11:58:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433788215] [2024-07-22 11:58:05,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-07-22 11:58:05,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-22 11:58:05,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat [2024-07-22 11:58:05,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-07-22 11:58:05,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-07-22 11:58:05,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-07-22 11:58:05,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2024-07-22 11:58:05,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-07-22 11:58:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-07-22 11:58:05,368 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-07-22 11:58:05,369 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-07-22 11:58:05,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location funcBErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-07-22 11:58:05,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-07-22 11:58:05,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-07-22 11:58:05,583 INFO L445 BasicCegarLoop]: Path program histogram: [3] [2024-07-22 11:58:05,584 INFO L308 ceAbstractionStarter]: Result for error location funcBThread1of1ForFork1 was UNSAFE (1/2) [2024-07-22 11:58:05,589 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-07-22 11:58:05,589 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-07-22 11:58:05,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 11:58:05 BasicIcfg [2024-07-22 11:58:05,677 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-07-22 11:58:05,678 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-07-22 11:58:05,678 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-07-22 11:58:05,678 INFO L274 PluginConnector]: Witness Printer initialized [2024-07-22 11:58:05,678 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:58:02" (3/4) ... [2024-07-22 11:58:05,680 INFO L140 WitnessPrinter]: No result that supports witness generation found [2024-07-22 11:58:05,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-07-22 11:58:05,682 INFO L158 Benchmark]: Toolchain (without parser) took 4712.96ms. Allocated memory was 65.0MB in the beginning and 123.7MB in the end (delta: 58.7MB). Free memory was 42.6MB in the beginning and 75.0MB in the end (delta: -32.4MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2024-07-22 11:58:05,685 INFO L158 Benchmark]: CDTParser took 1.06ms. Allocated memory is still 50.3MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-22 11:58:05,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 855.34ms. Allocated memory is still 65.0MB. Free memory was 42.5MB in the beginning and 30.4MB in the end (delta: 12.1MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-07-22 11:58:05,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.69ms. Allocated memory is still 65.0MB. Free memory was 30.4MB in the beginning and 27.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-07-22 11:58:05,686 INFO L158 Benchmark]: Boogie Preprocessor took 36.54ms. Allocated memory is still 65.0MB. Free memory was 27.4MB in the beginning and 24.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-22 11:58:05,687 INFO L158 Benchmark]: RCFGBuilder took 825.07ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 24.9MB in the beginning and 42.6MB in the end (delta: -17.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-07-22 11:58:05,687 INFO L158 Benchmark]: TraceAbstraction took 2939.06ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 41.6MB in the beginning and 75.9MB in the end (delta: -34.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-07-22 11:58:05,692 INFO L158 Benchmark]: Witness Printer took 3.76ms. Allocated memory is still 123.7MB. Free memory was 75.9MB in the beginning and 75.0MB in the end (delta: 924.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-07-22 11:58:05,693 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.06ms. Allocated memory is still 50.3MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 855.34ms. Allocated memory is still 65.0MB. Free memory was 42.5MB in the beginning and 30.4MB in the end (delta: 12.1MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.69ms. Allocated memory is still 65.0MB. Free memory was 30.4MB in the beginning and 27.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.54ms. Allocated memory is still 65.0MB. Free memory was 27.4MB in the beginning and 24.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 825.07ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 24.9MB in the beginning and 42.6MB in the end (delta: -17.7MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2939.06ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 41.6MB in the beginning and 75.9MB in the end (delta: -34.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Witness Printer took 3.76ms. Allocated memory is still 123.7MB. Free memory was 75.9MB in the beginning and 75.0MB in the end (delta: 924.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2319, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 161, dependent conditional: 129, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 5, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1211, independent: 1177, independent conditional: 2, independent unconditional: 1175, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1211, independent: 1146, independent conditional: 0, independent unconditional: 1146, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 209, independent: 106, independent conditional: 7, independent unconditional: 100, dependent: 103, dependent conditional: 8, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2201, independent: 981, independent conditional: 0, independent unconditional: 981, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1211, unknown conditional: 4, unknown unconditional: 1207] , Statistics on independence cache: Total cache size (in pairs): 1211, Positive cache size: 1177, Positive conditional cache size: 2, Positive unconditional cache size: 1175, Negative cache size: 34, Negative conditional cache size: 2, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 2, Independence queries for same thread: 125 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.3s, Number of persistent set computation: 220, Number of trivial persistent sets: 173, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1297, independent: 1265, independent conditional: 0, independent unconditional: 1265, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2319, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 161, dependent conditional: 129, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2194, independent: 2158, independent conditional: 893, independent unconditional: 1265, dependent: 36, dependent conditional: 4, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 5, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2201, independent: 2158, independent conditional: 2, independent unconditional: 2156, dependent: 43, dependent conditional: 2, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1211, independent: 1177, independent conditional: 2, independent unconditional: 1175, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1211, independent: 1146, independent conditional: 0, independent unconditional: 1146, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 65, independent: 31, independent conditional: 2, independent unconditional: 29, dependent: 34, dependent conditional: 2, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 209, independent: 106, independent conditional: 7, independent unconditional: 100, dependent: 103, dependent conditional: 8, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2201, independent: 981, independent conditional: 0, independent unconditional: 981, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 1211, unknown conditional: 4, unknown unconditional: 1207] , Statistics on independence cache: Total cache size (in pairs): 1211, Positive cache size: 1177, Positive conditional cache size: 2, Positive unconditional cache size: 1175, Negative cache size: 34, Negative conditional cache size: 2, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 2, Independence queries for same thread: 125 - UnprovableResult [Line: 1272]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of sscanf at line 1284. Possible FailurePath: [L1236] 0 static int iTThreads = 2; [L1237] 0 static int iRThreads = 1; [L1238] 0 static int data1Value = 0; [L1239] 0 static int data2Value = 0; [L1240] 0 pthread_mutex_t *data1Lock; [L1241] 0 pthread_mutex_t *data2Lock; [L1278] 0 int i,err; [L1279] COND TRUE 0 argc != 1 [L1280] COND FALSE 0 !(argc != 3) [L1288] COND FALSE 0 !(iTThreads > 100000 || iRThreads > 100000) [L1291] 0 data1Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1292] 0 data2Lock = (pthread_mutex_t *) malloc(sizeof(pthread_mutex_t)) [L1293] EXPR 0 err = pthread_mutex_init(data1Lock, ((void *)0)) [L1293] COND FALSE 0 !(0 != (err = pthread_mutex_init(data1Lock, ((void *)0)))) [L1297] EXPR 0 err = pthread_mutex_init(data2Lock, ((void *)0)) [L1297] COND FALSE 0 !(0 != (err = pthread_mutex_init(data2Lock, ((void *)0)))) [L1301] 0 pthread_t tPool[iTThreads]; [L1302] 0 pthread_t rPool[iRThreads]; [L1303] 0 i = 0 VAL [\old(argc)=3, \old(argv)={6:5}, argc=3, data1Lock={3:0}, data1Value=0, data2Lock={7:0}, data2Value=0, err=0, i=0, iRThreads=2, iTThreads=1, rPool={23:0}, tPool={15:0}] [L1303] COND TRUE 0 i < iTThreads [L1304] EXPR, FCALL, FORK 0 pthread_create(&tPool[i], ((void *)0), &funcA, ((void *)0)) VAL [\old(argc)=3, \old(argv)={6:5}, \old(param)={0:0}, argc=3, data1Lock={3:0}, data1Value=0, data2Lock={7:0}, data2Value=0, err=0, i=0, iRThreads=2, iTThreads=1, rPool={23:0}, tPool={15:0}] [L1245] 1 int t1 = -1; VAL [\old(param)={0:0}, data1Lock={3:0}, data1Value=0, data2Lock={7:0}, data2Value=0, iRThreads=2, iTThreads=1, param={0:0}, t1=-1] [L1247] 1 data1Value = 1 VAL [\old(param)={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, iRThreads=2, iTThreads=1, param={0:0}, t1=-1] [L1250] 1 t1 = data1Value VAL [\old(param)={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, iRThreads=2, iTThreads=1, param={0:0}, t1=1] [L1304] EXPR 0 err = pthread_create(&tPool[i], ((void *)0), &funcA, ((void *)0)) [L1304] COND FALSE 0 !(0 != (err = pthread_create(&tPool[i], ((void *)0), &funcA, ((void *)0)))) [L1303] 0 i++ VAL [\old(argc)=3, \old(argv)={6:5}, \old(param)={0:0}, argc=3, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, err=0, i=1, iRThreads=2, iTThreads=1, param={0:0}, rPool={23:0}, t1=1, tPool={15:0}] [L1303] COND FALSE 0 !(i < iTThreads) [L1309] 0 i = 0 VAL [\old(argc)=3, \old(argv)={6:5}, \old(param)={0:0}, argc=3, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, err=0, i=0, iRThreads=2, iTThreads=1, param={0:0}, rPool={23:0}, t1=1, tPool={15:0}] [L1309] COND TRUE 0 i < iRThreads [L1310] FCALL, FORK 0 pthread_create(&rPool[i], ((void *)0), &funcB, ((void *)0)) VAL [\old(argc)=3, \old(argv)={6:5}, \old(param)={0:0}, \old(param)={0:0}, argc=3, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, err=0, i=0, iRThreads=2, iTThreads=1, param={0:0}, rPool={23:0}, t1=1, tPool={15:0}] [L1258] 2 int t1 = -1; [L1259] 2 int t2 = -1; VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, iRThreads=2, iTThreads=1, param={0:0}, param={0:0}, t1=-1, t1=1, t2=-1] [L1261] COND FALSE 2 !(data1Value == 0) [L1265] 2 t1 = data1Value VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, iRThreads=2, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=-1] [L1268] 2 t2 = data2Value VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=0, iRThreads=2, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=0] [L1253] 1 data2Value = t1 + 1 VAL [\old(param)={0:0}, \old(param)={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=2, iRThreads=2, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=0] [L1255] 1 return ((void *)0); [L1270] COND TRUE 2 t2 != (t1 + 1) [L1272] 2 reach_error() VAL [\old(param)={0:0}, \old(param)={0:0}, \result={0:0}, data1Lock={3:0}, data1Value=1, data2Lock={7:0}, data2Value=2, iRThreads=2, iTThreads=1, param={0:0}, param={0:0}, t1=1, t1=1, t2=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: funcBThread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 80 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.8s, 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: 11, 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, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 4 NumberOfNonLiveVariables, 288 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 could not prove your program: unable to determine feasibility of some traces [2024-07-22 11:58:05,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2024-07-22 11:58:05,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample