./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-theta/unwind2-nondet.i --full-output --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e5b835a 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-theta/unwind2-nondet.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 2a5cfd83882a7664c3fd4f1a4e18081e8ded19b8ce4eef96c1e08452494599fb --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks false --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.theta-eval-2e5b835-m [2024-10-21 17:28:32,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-21 17:28:32,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-21 17:28:32,986 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-21 17:28:32,987 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-21 17:28:33,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-21 17:28:33,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-21 17:28:33,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-21 17:28:33,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-21 17:28:33,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-21 17:28:33,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-21 17:28:33,022 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-21 17:28:33,023 INFO L153 SettingsManager]: * Use SBE=true [2024-10-21 17:28:33,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-21 17:28:33,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-21 17:28:33,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-21 17:28:33,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-21 17:28:33,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-21 17:28:33,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-21 17:28:33,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-21 17:28:33,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-21 17:28:33,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-21 17:28:33,030 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-21 17:28:33,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-21 17:28:33,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-21 17:28:33,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-21 17:28:33,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-21 17:28:33,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-21 17:28:33,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-21 17:28:33,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-21 17:28:33,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-21 17:28:33,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-21 17:28:33,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-21 17:28:33,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-21 17:28:33,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-21 17:28:33,033 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-21 17:28:33,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-21 17:28:33,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-21 17:28:33,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-21 17:28:33,034 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-21 17:28:33,035 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-21 17:28:33,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a5cfd83882a7664c3fd4f1a4e18081e8ded19b8ce4eef96c1e08452494599fb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> false [2024-10-21 17:28:33,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-21 17:28:33,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-21 17:28:33,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-21 17:28:33,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-21 17:28:33,331 INFO L274 PluginConnector]: CDTParser initialized [2024-10-21 17:28:33,333 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-theta/unwind2-nondet.i [2024-10-21 17:28:34,746 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-21 17:28:34,981 INFO L384 CDTParser]: Found 1 translation units. [2024-10-21 17:28:34,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/unwind2-nondet.i [2024-10-21 17:28:34,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ff8d9e119/429ba6aeb1c3438a884caf50e876ed12/FLAG6bccb3753 [2024-10-21 17:28:35,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/ff8d9e119/429ba6aeb1c3438a884caf50e876ed12 [2024-10-21 17:28:35,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-21 17:28:35,327 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-21 17:28:35,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-21 17:28:35,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-21 17:28:35,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-21 17:28:35,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38bbd7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35, skipping insertion in model container [2024-10-21 17:28:35,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,375 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-21 17:28:35,753 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/unwind2-nondet.i[32963,32976] [2024-10-21 17:28:35,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-21 17:28:35,785 INFO L200 MainTranslator]: Completed pre-run [2024-10-21 17:28:35,831 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/unwind2-nondet.i[32963,32976] [2024-10-21 17:28:35,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-21 17:28:35,881 INFO L204 MainTranslator]: Completed translation [2024-10-21 17:28:35,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35 WrapperNode [2024-10-21 17:28:35,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-21 17:28:35,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-21 17:28:35,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-21 17:28:35,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-21 17:28:35,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,907 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,929 INFO L138 Inliner]: procedures = 168, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2024-10-21 17:28:35,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-21 17:28:35,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-21 17:28:35,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-21 17:28:35,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-21 17:28:35,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,949 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,956 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-21 17:28:35,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-21 17:28:35,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-21 17:28:35,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-21 17:28:35,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (1/1) ... [2024-10-21 17:28:35,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-21 17:28:35,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-21 17:28:36,012 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) [2024-10-21 17:28:36,015 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 [2024-10-21 17:28:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-21 17:28:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-10-21 17:28:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-10-21 17:28:36,059 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-10-21 17:28:36,059 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-10-21 17:28:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-21 17:28:36,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-21 17:28:36,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-21 17:28:36,061 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-21 17:28:36,185 INFO L238 CfgBuilder]: Building ICFG [2024-10-21 17:28:36,187 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-21 17:28:36,351 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-21 17:28:36,352 INFO L287 CfgBuilder]: Performing block encoding [2024-10-21 17:28:36,368 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-21 17:28:36,368 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-21 17:28:36,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 05:28:36 BoogieIcfgContainer [2024-10-21 17:28:36,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-21 17:28:36,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-21 17:28:36,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-21 17:28:36,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-21 17:28:36,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 05:28:35" (1/3) ... [2024-10-21 17:28:36,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6101c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 05:28:36, skipping insertion in model container [2024-10-21 17:28:36,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 05:28:35" (2/3) ... [2024-10-21 17:28:36,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6101c2fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 05:28:36, skipping insertion in model container [2024-10-21 17:28:36,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 05:28:36" (3/3) ... [2024-10-21 17:28:36,393 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2024-10-21 17:28:36,409 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-21 17:28:36,409 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-21 17:28:36,410 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-21 17:28:36,474 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-21 17:28:36,512 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-21 17:28:36,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-21 17:28:36,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-21 17:28:36,516 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) [2024-10-21 17:28:36,519 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 [2024-10-21 17:28:36,560 INFO L157 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-21 17:28:36,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == f2Thread1of1ForFork1 ======== [2024-10-21 17:28:36,583 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;@2df23e50, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-21 17:28:36,583 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-21 17:28:36,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-21 17:28:36,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-21 17:28:36,956 INFO L85 PathProgramCache]: Analyzing trace with hash 390620319, now seen corresponding path program 1 times [2024-10-21 17:28:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-21 17:28:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146064079] [2024-10-21 17:28:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-21 17:28:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-21 17:28:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-21 17:28:37,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-21 17:28:37,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-21 17:28:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146064079] [2024-10-21 17:28:37,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146064079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-21 17:28:37,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-21 17:28:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-21 17:28:37,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372702478] [2024-10-21 17:28:37,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-21 17:28:37,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-21 17:28:37,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-21 17:28:37,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-21 17:28:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-21 17:28:37,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:37,645 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-21 17:28:37,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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) [2024-10-21 17:28:37,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:38,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:38,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-21 17:28:38,068 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-21 17:28:38,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-21 17:28:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -7327703, now seen corresponding path program 1 times [2024-10-21 17:28:38,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-21 17:28:38,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933132486] [2024-10-21 17:28:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-21 17:28:38,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-21 17:28:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-21 17:28:38,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-21 17:28:38,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-21 17:28:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933132486] [2024-10-21 17:28:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933132486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-21 17:28:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391410420] [2024-10-21 17:28:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-21 17:28:38,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-21 17:28:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-21 17:28:38,423 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) [2024-10-21 17:28:38,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-21 17:28:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-21 17:28:38,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-21 17:28:38,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-21 17:28:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-21 17:28:38,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-21 17:28:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-21 17:28:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391410420] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-21 17:28:39,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-21 17:28:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 36 [2024-10-21 17:28:39,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971663854] [2024-10-21 17:28:39,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-21 17:28:39,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-21 17:28:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-21 17:28:39,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-21 17:28:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1120, Unknown=0, NotChecked=0, Total=1260 [2024-10-21 17:28:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:39,364 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-21 17:28:39,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.25) internal successors, (117), 36 states have internal predecessors, (117), 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) [2024-10-21 17:28:39,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:39,365 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-21 17:28:40,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-21 17:28:41,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-21 17:28:41,163 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-21 17:28:41,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-21 17:28:41,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1968944835, now seen corresponding path program 2 times [2024-10-21 17:28:41,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-21 17:28:41,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812632343] [2024-10-21 17:28:41,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-21 17:28:41,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-21 17:28:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-21 17:28:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-21 17:28:41,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-21 17:28:41,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812632343] [2024-10-21 17:28:41,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812632343] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-21 17:28:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323593924] [2024-10-21 17:28:41,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-21 17:28:41,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-21 17:28:41,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-21 17:28:41,589 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-21 17:28:41,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-21 17:28:41,655 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-21 17:28:41,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-21 17:28:41,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-21 17:28:41,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-21 17:28:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-21 17:28:42,331 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-21 17:28:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-21 17:28:43,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323593924] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-21 17:28:43,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-21 17:28:43,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 23] total 58 [2024-10-21 17:28:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427301926] [2024-10-21 17:28:43,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-21 17:28:43,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-21 17:28:43,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-21 17:28:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-21 17:28:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=2992, Unknown=0, NotChecked=0, Total=3306 [2024-10-21 17:28:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:43,063 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-21 17:28:43,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 58 states have internal predecessors, (164), 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) [2024-10-21 17:28:43,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:43,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2024-10-21 17:28:43,064 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:46,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-21 17:28:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-10-21 17:28:46,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-21 17:28:46,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-21 17:28:46,758 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-21 17:28:46,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-21 17:28:46,759 INFO L85 PathProgramCache]: Analyzing trace with hash -978115303, now seen corresponding path program 3 times [2024-10-21 17:28:46,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-21 17:28:46,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106624570] [2024-10-21 17:28:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-21 17:28:46,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-21 17:28:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-21 17:28:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-21 17:28:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-21 17:28:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106624570] [2024-10-21 17:28:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106624570] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-21 17:28:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639921565] [2024-10-21 17:28:47,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-21 17:28:47,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-21 17:28:47,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-21 17:28:47,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-21 17:28:47,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-21 17:28:47,122 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-21 17:28:47,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-21 17:28:47,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-21 17:28:47,127 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-21 17:28:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-10-21 17:28:47,268 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-21 17:28:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639921565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-21 17:28:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-21 17:28:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 15 [2024-10-21 17:28:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396159550] [2024-10-21 17:28:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-21 17:28:47,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-21 17:28:47,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-21 17:28:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-21 17:28:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-10-21 17:28:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:47,270 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-21 17:28:47,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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) [2024-10-21 17:28:47,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:47,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2024-10-21 17:28:47,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 86 states. [2024-10-21 17:28:47,271 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-21 17:28:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-21 17:28:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-10-21 17:28:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2024-10-21 17:28:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-21 17:28:52,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-21 17:28:52,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-21 17:28:52,606 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [f2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-21 17:28:52,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-21 17:28:52,607 INFO L85 PathProgramCache]: Analyzing trace with hash -452990879, now seen corresponding path program 1 times [2024-10-21 17:28:52,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-21 17:28:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185214519] [2024-10-21 17:28:52,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-21 17:28:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-21 17:28:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-21 17:28:52,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-21 17:28:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-21 17:28:52,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-21 17:28:52,651 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-21 17:28:52,652 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-21 17:28:52,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-21 17:28:52,661 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-21 17:28:52,663 INFO L312 ceAbstractionStarter]: Result for error location f2Thread1of1ForFork1 was UNSAFE (1/3) [2024-10-21 17:28:52,718 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-21 17:28:52,719 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-21 17:28:52,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 05:28:52 BasicIcfg [2024-10-21 17:28:52,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-21 17:28:52,723 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-21 17:28:52,723 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-21 17:28:52,723 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-21 17:28:52,724 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 05:28:36" (3/4) ... [2024-10-21 17:28:52,724 INFO L133 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-21 17:28:52,785 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2024-10-21 17:28:52,786 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-21 17:28:52,786 INFO L158 Benchmark]: Toolchain (without parser) took 17459.64ms. Allocated memory was 161.5MB in the beginning and 310.4MB in the end (delta: 148.9MB). Free memory was 103.5MB in the beginning and 197.0MB in the end (delta: -93.4MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,786 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 161.5MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-21 17:28:52,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.21ms. Allocated memory is still 161.5MB. Free memory was 103.2MB in the beginning and 80.8MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.45ms. Allocated memory is still 161.5MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,787 INFO L158 Benchmark]: Boogie Preprocessor took 40.14ms. Allocated memory is still 161.5MB. Free memory was 78.8MB in the beginning and 77.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,787 INFO L158 Benchmark]: RCFGBuilder took 397.31ms. Allocated memory is still 161.5MB. Free memory was 77.1MB in the beginning and 129.5MB in the end (delta: -52.4MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,788 INFO L158 Benchmark]: TraceAbstraction took 16351.45ms. Allocated memory was 161.5MB in the beginning and 310.4MB in the end (delta: 148.9MB). Free memory was 128.8MB in the beginning and 203.2MB in the end (delta: -74.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,788 INFO L158 Benchmark]: Witness Printer took 62.79ms. Allocated memory is still 310.4MB. Free memory was 203.2MB in the beginning and 197.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-21 17:28:52,790 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 161.5MB. Free memory is still 122.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.21ms. Allocated memory is still 161.5MB. Free memory was 103.2MB in the beginning and 80.8MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.45ms. Allocated memory is still 161.5MB. Free memory was 80.8MB in the beginning and 78.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.14ms. Allocated memory is still 161.5MB. Free memory was 78.8MB in the beginning and 77.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.31ms. Allocated memory is still 161.5MB. Free memory was 77.1MB in the beginning and 129.5MB in the end (delta: -52.4MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16351.45ms. Allocated memory was 161.5MB in the beginning and 310.4MB in the end (delta: 148.9MB). Free memory was 128.8MB in the beginning and 203.2MB in the end (delta: -74.4MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * Witness Printer took 62.79ms. Allocated memory is still 310.4MB. Free memory was 203.2MB in the beginning and 197.0MB 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: 4266, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 413, dependent conditional: 409, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 0, independent unconditional: 3853, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 0, independent unconditional: 3853, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1490, independent: 1486, independent conditional: 0, independent unconditional: 1486, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1490, independent: 1485, independent conditional: 0, independent unconditional: 1485, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 5, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 261, independent: 148, independent conditional: 0, independent unconditional: 148, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 3857, independent: 2367, independent conditional: 0, independent unconditional: 2367, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1490, unknown conditional: 0, unknown unconditional: 1490] , Statistics on independence cache: Total cache size (in pairs): 1490, Positive cache size: 1486, Positive conditional cache size: 0, Positive unconditional cache size: 1486, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 2270, Maximal queried relation: 0, Independence queries for same thread: 409, Persistent sets #1 benchmarks: Persistent set computation time: 0.3s, Number of persistent set computation: 181, Number of trivial persistent sets: 159, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1587, independent: 1583, independent conditional: 0, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 4266, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 413, dependent conditional: 409, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 2270, independent unconditional: 1583, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 0, independent unconditional: 3853, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3857, independent: 3853, independent conditional: 0, independent unconditional: 3853, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1490, independent: 1486, independent conditional: 0, independent unconditional: 1486, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1490, independent: 1485, independent conditional: 0, independent unconditional: 1485, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 5, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 261, independent: 148, independent conditional: 0, independent unconditional: 148, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 3857, independent: 2367, independent conditional: 0, independent unconditional: 2367, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1490, unknown conditional: 0, unknown unconditional: 1490] , Statistics on independence cache: Total cache size (in pairs): 1490, Positive cache size: 1486, Positive conditional cache size: 0, Positive unconditional cache size: 1486, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 2270, Maximal queried relation: 0, Independence queries for same thread: 409 - CounterExampleResult [Line: 750]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L751] 0 int _N; VAL [_N=0] [L752] 0 atomic_int limit; VAL [_N=0, limit=0] [L772] 0 _N = __VERIFIER_nondet_int() VAL [_N=-2, limit=0] [L773] 0 pthread_t t1, t2; VAL [_N=-2, limit=0] [L774] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [_N=-2, limit=0, t1=-1] [L754] 1 int i, bound; VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, limit=0] [L755] 1 int lim = _N; VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, lim=-2, limit=0] [L756] 1 limit = lim VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, lim=-2, limit=-2] [L757] 1 bound = limit VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, bound=-2, lim=-2, limit=-2] [L758] 1 i = 0 VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, bound=-2, i=0, lim=-2, limit=-2] [L775] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [_N=-2, limit=-2, t1=-1, t2=0] [L763] 2 int i, bound; VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, limit=-2] [L764] 2 int lim = _N + 1; VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, lim=-1, limit=-2] [L765] 2 limit = lim VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, lim=-1, limit=-1] [L766] 2 bound = limit VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, bound=-1, lim=-1, limit=-1] [L767] 2 i = 0 VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, bound=-1, i=0, lim=-1, limit=-1] [L758] COND FALSE 1 !(i < bound) VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, bound=-2, i=0, lim=-2, limit=-1] [L759] CALL 1 __VERIFIER_assert(i == lim) [L750] COND TRUE 1 !expression VAL [\old(expression)=0, _N=-2, expression=0, limit=-1] [L750] 1 reach_error() VAL [\old(expression)=0, _N=-2, expression=0, limit=-1] [L767] COND FALSE 2 !(i < bound) VAL [\old(arg)={0:0}, _N=-2, arg={0:0}, bound=-1, i=0, lim=-1, limit=-1] [L768] CALL 2 __VERIFIER_assert(i == lim) [L750] COND TRUE 2 !expression VAL [\old(expression)=0, \old(expression)=0, _N=-2, expression=0, expression=0, limit=-1] [L750] 2 reach_error() VAL [\old(expression)=0, \old(expression)=0, _N=-2, expression=0, expression=0, limit=-1] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: f2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 129 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 16.1s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 3, EmptinessCheckTime: 11.0s, 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: 242, 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, 3.9s InterpolantComputationTime, 574 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 2871 SizeOfPredicates, 41 NumberOfNonLiveVariables, 405 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 259/414 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-10-21 17:28:52,813 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 [2024-10-21 17:28:53,017 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