./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 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-ext/25_stack_longer-1.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 ba97c44431e27256d062ccf668a9dc4f57d7e92b05fdac6228d08e7c5a2d8a0c --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking COUNTEREXAMPLE --traceabstraction.criterion.for.conditional.commutativity.checking SLEEP_SET -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-17 10:20:37,123 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-17 10:20:37,199 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-17 10:20:37,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-17 10:20:37,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-17 10:20:37,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-17 10:20:37,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-17 10:20:37,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-17 10:20:37,235 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-17 10:20:37,235 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-17 10:20:37,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-17 10:20:37,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-17 10:20:37,236 INFO L153 SettingsManager]: * Use SBE=true [2024-10-17 10:20:37,236 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-17 10:20:37,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-17 10:20:37,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-17 10:20:37,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-17 10:20:37,239 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-17 10:20:37,239 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-17 10:20:37,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-17 10:20:37,241 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-17 10:20:37,242 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-17 10:20:37,242 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-17 10:20:37,242 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-17 10:20:37,242 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-17 10:20:37,242 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-17 10:20:37,243 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-17 10:20:37,243 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-17 10:20:37,243 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-17 10:20:37,243 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-17 10:20:37,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 10:20:37,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-17 10:20:37,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-17 10:20:37,245 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-17 10:20:37,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-17 10:20:37,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-17 10:20:37,245 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-17 10:20:37,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-17 10:20:37,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-17 10:20:37,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-17 10:20:37,246 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-17 10:20:37,246 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba97c44431e27256d062ccf668a9dc4f57d7e92b05fdac6228d08e7c5a2d8a0c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> COUNTEREXAMPLE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> SLEEP_SET [2024-10-17 10:20:37,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-17 10:20:37,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-17 10:20:37,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-17 10:20:37,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-17 10:20:37,425 INFO L274 PluginConnector]: CDTParser initialized [2024-10-17 10:20:37,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i [2024-10-17 10:20:38,653 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-17 10:20:38,874 INFO L384 CDTParser]: Found 1 translation units. [2024-10-17 10:20:38,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack_longer-1.i [2024-10-17 10:20:38,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b7f3ce5d8/408178cdc8df40bcaf7481945e2f3bc6/FLAG3040d8c39 [2024-10-17 10:20:39,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b7f3ce5d8/408178cdc8df40bcaf7481945e2f3bc6 [2024-10-17 10:20:39,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-17 10:20:39,234 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-17 10:20:39,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-17 10:20:39,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-17 10:20:39,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-17 10:20:39,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470795a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39, skipping insertion in model container [2024-10-17 10:20:39,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,273 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-17 10:20:39,495 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-ext/25_stack_longer-1.i[31182,31195] [2024-10-17 10:20:39,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 10:20:39,525 INFO L200 MainTranslator]: Completed pre-run [2024-10-17 10:20:39,570 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-ext/25_stack_longer-1.i[31182,31195] [2024-10-17 10:20:39,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-17 10:20:39,611 INFO L204 MainTranslator]: Completed translation [2024-10-17 10:20:39,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39 WrapperNode [2024-10-17 10:20:39,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-17 10:20:39,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-17 10:20:39,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-17 10:20:39,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-17 10:20:39,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,659 INFO L138 Inliner]: procedures = 178, calls = 33, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 173 [2024-10-17 10:20:39,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-17 10:20:39,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-17 10:20:39,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-17 10:20:39,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-17 10:20:39,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-17 10:20:39,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-17 10:20:39,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-17 10:20:39,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-17 10:20:39,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (1/1) ... [2024-10-17 10:20:39,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-17 10:20:39,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:20:39,732 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) [2024-10-17 10:20:39,735 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 [2024-10-17 10:20:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-17 10:20:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-17 10:20:39,769 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-17 10:20:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-17 10:20:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-17 10:20:39,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-17 10:20:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-17 10:20:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-17 10:20:39,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-17 10:20:39,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-17 10:20:39,771 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-17 10:20:39,893 INFO L238 CfgBuilder]: Building ICFG [2024-10-17 10:20:39,895 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-17 10:20:40,091 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-17 10:20:40,092 INFO L287 CfgBuilder]: Performing block encoding [2024-10-17 10:20:40,344 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-17 10:20:40,345 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-17 10:20:40,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:40 BoogieIcfgContainer [2024-10-17 10:20:40,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-17 10:20:40,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-17 10:20:40,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-17 10:20:40,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-17 10:20:40,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:20:39" (1/3) ... [2024-10-17 10:20:40,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:40, skipping insertion in model container [2024-10-17 10:20:40,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:20:39" (2/3) ... [2024-10-17 10:20:40,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:20:40, skipping insertion in model container [2024-10-17 10:20:40,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:40" (3/3) ... [2024-10-17 10:20:40,353 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1.i [2024-10-17 10:20:40,366 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-17 10:20:40,366 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-17 10:20:40,366 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-17 10:20:40,408 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-17 10:20:40,443 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-17 10:20:40,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-17 10:20:40,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-17 10:20:40,445 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) [2024-10-17 10:20:40,447 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 [2024-10-17 10:20:40,529 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-17 10:20:40,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:20:40,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2024-10-17 10:20:40,551 INFO L333 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, 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;@25e51b8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=COUNTEREXAMPLE, mConComCheckerCriterion=SLEEP_SET, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=false, mConComCheckerCriterionLimit=1, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-17 10:20:40,552 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-17 10:20:41,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:20:41,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:20:41,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1916175070, now seen corresponding path program 1 times [2024-10-17 10:20:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:20:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751286405] [2024-10-17 10:20:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:20:41,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:20:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:20:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 10:20:41,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:20:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751286405] [2024-10-17 10:20:41,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751286405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:20:41,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:20:41,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-17 10:20:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819735459] [2024-10-17 10:20:41,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:20:41,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-17 10:20:41,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:20:41,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-17 10:20:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-17 10:20:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:20:41,344 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:20:41,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2024-10-17 10:20:41,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:20:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:20:41,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-17 10:20:41,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:20:41,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:20:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1016983088, now seen corresponding path program 1 times [2024-10-17 10:20:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:20:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809662482] [2024-10-17 10:20:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:20:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:20:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-17 10:20:41,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-17 10:20:41,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-17 10:20:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809662482] [2024-10-17 10:20:41,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809662482] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-17 10:20:41,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-17 10:20:41,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-17 10:20:41,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458973242] [2024-10-17 10:20:41,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-17 10:20:41,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-17 10:20:41,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-17 10:20:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-17 10:20:41,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-17 10:20:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:20:41,487 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-17 10:20:41,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-10-17 10:20:41,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:20:41,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-17 10:20:41,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-17 10:20:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-17 10:20:41,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-17 10:20:41,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-17 10:20:41,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-17 10:20:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash 793455298, now seen corresponding path program 1 times [2024-10-17 10:20:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-17 10:20:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550652637] [2024-10-17 10:20:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-17 10:20:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-17 10:20:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:20:41,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-17 10:20:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-17 10:20:41,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-17 10:20:41,703 INFO L332 BasicCegarLoop]: Counterexample is feasible [2024-10-17 10:20:41,707 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-17 10:20:41,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-17 10:20:41,726 INFO L414 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-17 10:20:41,727 INFO L312 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was UNSAFE (1/2) [2024-10-17 10:20:41,786 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-17 10:20:41,786 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-17 10:20:41,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:20:41 BasicIcfg [2024-10-17 10:20:41,788 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-17 10:20:41,789 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-17 10:20:41,789 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-17 10:20:41,789 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-17 10:20:41,790 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:20:40" (3/4) ... [2024-10-17 10:20:41,790 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-17 10:20:41,848 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2024-10-17 10:20:41,848 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-17 10:20:41,849 INFO L158 Benchmark]: Toolchain (without parser) took 2615.05ms. Allocated memory was 195.0MB in the beginning and 285.2MB in the end (delta: 90.2MB). Free memory was 160.8MB in the beginning and 229.9MB in the end (delta: -69.1MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2024-10-17 10:20:41,849 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory was 87.5MB in the beginning and 87.4MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-17 10:20:41,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 379.41ms. Allocated memory is still 195.0MB. Free memory was 160.8MB in the beginning and 138.0MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-17 10:20:41,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.48ms. Allocated memory is still 195.0MB. Free memory was 138.0MB in the beginning and 135.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-17 10:20:41,850 INFO L158 Benchmark]: Boogie Preprocessor took 22.43ms. Allocated memory is still 195.0MB. Free memory was 135.5MB in the beginning and 133.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-17 10:20:41,850 INFO L158 Benchmark]: RCFGBuilder took 660.28ms. Allocated memory is still 195.0MB. Free memory was 133.9MB in the beginning and 143.3MB in the end (delta: -9.4MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-10-17 10:20:41,850 INFO L158 Benchmark]: TraceAbstraction took 1440.37ms. Allocated memory was 195.0MB in the beginning and 285.2MB in the end (delta: 90.2MB). Free memory was 142.3MB in the beginning and 236.2MB in the end (delta: -93.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-17 10:20:41,850 INFO L158 Benchmark]: Witness Printer took 59.34ms. Allocated memory is still 285.2MB. Free memory was 236.2MB in the beginning and 229.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-17 10:20:41,851 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 125.8MB. Free memory was 87.5MB in the beginning and 87.4MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 379.41ms. Allocated memory is still 195.0MB. Free memory was 160.8MB in the beginning and 138.0MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.48ms. Allocated memory is still 195.0MB. Free memory was 138.0MB in the beginning and 135.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.43ms. Allocated memory is still 195.0MB. Free memory was 135.5MB in the beginning and 133.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 660.28ms. Allocated memory is still 195.0MB. Free memory was 133.9MB in the beginning and 143.3MB in the end (delta: -9.4MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1440.37ms. Allocated memory was 195.0MB in the beginning and 285.2MB in the end (delta: 90.2MB). Free memory was 142.3MB in the beginning and 236.2MB in the end (delta: -93.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 59.34ms. Allocated memory is still 285.2MB. Free memory was 236.2MB in the beginning and 229.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Partial order reduction statistics Independence relation #1 benchmarks: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 359, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 30, dependent conditional: 23, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 336, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ ConditionTransformingIndependenceRelation.Independence Queries: [ total: 336, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 336, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 536, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 343, independent: 124, independent conditional: 0, independent unconditional: 124, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 80, Maximal queried relation: 0, ConditionTransformingIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 536, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 343, independent: 124, independent conditional: 0, independent unconditional: 124, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 80 ], Independence queries for same thread: 23, Persistent sets #1 benchmarks: Persistent set computation time: 0.6s, Number of persistent set computation: 25, Number of trivial persistent sets: 11, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 256, independent: 249, independent conditional: 0, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 359, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 30, dependent conditional: 23, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 336, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ ConditionTransformingIndependenceRelation.Independence Queries: [ total: 336, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 336, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 536, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 343, independent: 124, independent conditional: 0, independent unconditional: 124, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 80, Maximal queried relation: 0, ConditionTransformingIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 80, independent unconditional: 249, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 343, independent: 329, independent conditional: 0, independent unconditional: 329, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 212, independent: 205, independent conditional: 0, independent unconditional: 205, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 212, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 536, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 343, independent: 124, independent conditional: 0, independent unconditional: 124, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 212, unknown conditional: 0, unknown unconditional: 212] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 205, Positive conditional cache size: 0, Positive unconditional cache size: 205, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 80 ], Independence queries for same thread: 23 - CounterExampleResult [Line: 749]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L701] 0 int memory[(2*320+1)]; [L702] 0 int next_alloc_idx = 1; [L703] 0 int m = 0; [L704] 0 int top; [L759] 0 int m2 = 0; [L760] 0 int state = 0; [L778] 0 pthread_t t; VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, top=0] [L779] COND TRUE 0 1 [L779] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t=-1, top=0] [L763] CALL 1 __VERIFIER_atomic_acquire(&m2) [L693] EXPR 1 \read(*m) [L693] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L693] RET 1 assume_abort_if_not(*m==0) [L694] 1 *m = 1 [L763] RET 1 __VERIFIER_atomic_acquire(&m2) [L766] 1 case 0: [L767] CALL 1 EBStack_init() [L719] 1 top = 0 [L767] RET 1 EBStack_init() [L768] 1 state = 1 [L769] 1 case 1: VAL [\old(arg)={0:0}, arg={0:0}, m2={4:0}, m={3:0}, next_alloc_idx=1, state=1, top=0] [L770] CALL 1 __VERIFIER_atomic_release(&m2) [L698] EXPR 1 \read(*m) [L698] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L698] RET 1 assume_abort_if_not(*m==1) [L699] 1 *m = 0 [L770] RET 1 __VERIFIER_atomic_release(&m2) [L771] CALL 1 push_loop() [L752] 1 int r = -1; [L753] 1 int arg = __VERIFIER_nondet_int(); [L754] COND TRUE 1 1 [L755] CALL, EXPR 1 push(arg) [L728] 1 int oldTop = -1, newTop = -1; [L729] CALL, EXPR 1 index_malloc() [L706] 1 int curr_alloc_idx = -1; VAL [curr_alloc_idx=-1, m2={4:0}, m={3:0}, next_alloc_idx=1, state=1, top=0] [L707] CALL 1 __VERIFIER_atomic_acquire(&m) [L693] EXPR 1 \read(*m) [L693] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L693] RET 1 assume_abort_if_not(*m==0) [L694] 1 *m = 1 [L707] RET 1 __VERIFIER_atomic_acquire(&m) [L708] COND FALSE 1 !(next_alloc_idx+2-1 > (2*320+1)) [L712] 1 curr_alloc_idx = next_alloc_idx [L713] 1 next_alloc_idx += 2 VAL [curr_alloc_idx=1, m2={4:0}, m={3:0}, next_alloc_idx=3, state=1, top=0] [L714] CALL 1 __VERIFIER_atomic_release(&m) [L698] EXPR 1 \read(*m) [L698] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L698] RET 1 assume_abort_if_not(*m==1) [L699] 1 *m = 0 [L714] RET 1 __VERIFIER_atomic_release(&m) [L716] 1 return curr_alloc_idx; [L729] RET, EXPR 1 index_malloc() [L729] 1 newTop = index_malloc() [L730] COND FALSE 1 !(newTop == 0) [L733] 1 memory[newTop+0] = d VAL [\old(d)=0, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=-1, state=1, top=0] [L734] CALL 1 __VERIFIER_atomic_acquire(&m) [L693] EXPR 1 \read(*m) [L693] CALL 1 assume_abort_if_not(*m==0) [L4] COND FALSE 1 !(!cond) [L693] RET 1 assume_abort_if_not(*m==0) [L694] 1 *m = 1 [L734] RET 1 __VERIFIER_atomic_acquire(&m) [L735] 1 oldTop = top [L736] 1 memory[newTop+1] = oldTop VAL [\old(d)=0, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top=0] [L738] 1 top = newTop VAL [\old(d)=0, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top=1] [L740] CALL 1 __VERIFIER_atomic_release(&m) [L698] EXPR 1 \read(*m) [L698] CALL 1 assume_abort_if_not(*m==1) [L4] COND FALSE 1 !(!cond) [L698] RET 1 assume_abort_if_not(*m==1) [L699] 1 *m = 0 [L740] RET 1 __VERIFIER_atomic_release(&m) [L741] 1 return 1; VAL [\old(d)=0, \result=1, d=0, m2={4:0}, m={3:0}, newTop=1, next_alloc_idx=3, oldTop=0, state=1, top=1] [L755] RET, EXPR 1 push(arg) [L755] 1 r = push(arg) [L756] CALL 1 __VERIFIER_atomic_assert(r) [L749] EXPR 1 !r || !isEmpty() [L749] CALL, EXPR 1 isEmpty() [L722] COND FALSE 1 !(top == 0) [L725] 1 return 0; [L749] RET, EXPR 1 isEmpty() [L749] EXPR 1 !r || !isEmpty() [L749] COND TRUE 1 !(!(!r || !isEmpty())) [L749] 1 reach_error() VAL [\old(r)=1, m2={4:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top=1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork0 with 1 thread instances CFG has 3 procedures, 54 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 0, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.7s, 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: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: ConditionalCommutativityOverallTime: 0.0s, ConditionalCommutativityCheckTime: 0.0s, ConditionalCommutativityIAIntegrations: 0, ConditionalCommutativityDFSRestarts: 0, ConditionalCommutativityCommutingCounterexamples: 0, ConditionalCommutativityConditionCalculations: 0, ConditionalCommutativityTraceChecks: 0, ConditionalCommutativityImperfectProofs: 0 RESULT: Ultimate proved your program to be incorrect! [2024-10-17 10:20:41,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Ended with exit code 0 [2024-10-17 10:20:42,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE