./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe037.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 42d87675 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe037.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 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --traceabstraction.partial.order.reduction.in.concurrent.analysis PERSISTENT_SETS --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-25 02:30:07,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-25 02:30:07,835 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-25 02:30:07,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-25 02:30:07,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-25 02:30:07,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-25 02:30:07,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-25 02:30:07,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-25 02:30:07,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-25 02:30:07,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-25 02:30:07,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-25 02:30:07,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-25 02:30:07,867 INFO L153 SettingsManager]: * Use SBE=true [2025-04-25 02:30:07,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-25 02:30:07,867 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-25 02:30:07,867 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-25 02:30:07,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-25 02:30:07,868 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-25 02:30:07,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-25 02:30:07,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 02:30:07,869 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-25 02:30:07,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-25 02:30:07,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-25 02:30:07,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-25 02:30:07,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 02:30:07,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-25 02:30:07,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 8e4a27807726d35f891e97d8bb2a7e6664171035f3f5de29d992fc7dfa583447 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Partial Order Reduction in concurrent analysis -> PERSISTENT_SETS [2025-04-25 02:30:08,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-25 02:30:08,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-25 02:30:08,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-25 02:30:08,108 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-25 02:30:08,108 INFO L274 PluginConnector]: CDTParser initialized [2025-04-25 02:30:08,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-wmm/safe037.i [2025-04-25 02:30:09,374 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b1461fdda/630faa2c59594454825c1fea986c536f/FLAGc19005550 [2025-04-25 02:30:09,634 INFO L389 CDTParser]: Found 1 translation units. [2025-04-25 02:30:09,634 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037.i [2025-04-25 02:30:09,654 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b1461fdda/630faa2c59594454825c1fea986c536f/FLAGc19005550 [2025-04-25 02:30:10,423 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/b1461fdda/630faa2c59594454825c1fea986c536f [2025-04-25 02:30:10,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-25 02:30:10,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-25 02:30:10,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-25 02:30:10,427 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-25 02:30:10,430 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-25 02:30:10,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4501334b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10, skipping insertion in model container [2025-04-25 02:30:10,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-25 02:30:10,613 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2025-04-25 02:30:10,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-25 02:30:10,787 INFO L200 MainTranslator]: Completed pre-run [2025-04-25 02:30:10,809 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe037.i[941,954] [2025-04-25 02:30:10,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-25 02:30:10,878 INFO L204 MainTranslator]: Completed translation [2025-04-25 02:30:10,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10 WrapperNode [2025-04-25 02:30:10,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-25 02:30:10,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-25 02:30:10,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-25 02:30:10,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-25 02:30:10,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,923 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2025-04-25 02:30:10,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-25 02:30:10,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-25 02:30:10,924 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-25 02:30:10,924 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-25 02:30:10,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,933 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-25 02:30:10,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-25 02:30:10,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-25 02:30:10,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-25 02:30:10,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (1/1) ... [2025-04-25 02:30:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-25 02:30:10,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 02:30:10,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-25 02:30:10,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-25 02:30:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-25 02:30:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-25 02:30:10,997 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-04-25 02:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-04-25 02:30:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-04-25 02:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-04-25 02:30:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-04-25 02:30:10,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-04-25 02:30:10,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-25 02:30:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-25 02:30:10,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-25 02:30:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-25 02:30:11,000 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-25 02:30:11,108 INFO L234 CfgBuilder]: Building ICFG [2025-04-25 02:30:11,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-25 02:30:11,221 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-25 02:30:11,221 INFO L283 CfgBuilder]: Performing block encoding [2025-04-25 02:30:11,290 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-25 02:30:11,293 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-25 02:30:11,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 02:30:11 BoogieIcfgContainer [2025-04-25 02:30:11,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-25 02:30:11,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-25 02:30:11,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-25 02:30:11,298 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-25 02:30:11,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.04 02:30:10" (1/3) ... [2025-04-25 02:30:11,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3b87cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.04 02:30:11, skipping insertion in model container [2025-04-25 02:30:11,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.04 02:30:10" (2/3) ... [2025-04-25 02:30:11,299 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3b87cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.04 02:30:11, skipping insertion in model container [2025-04-25 02:30:11,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 02:30:11" (3/3) ... [2025-04-25 02:30:11,301 INFO L128 eAbstractionObserver]: Analyzing ICFG safe037.i [2025-04-25 02:30:11,311 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-25 02:30:11,313 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe037.i that has 4 procedures, 41 locations, 38 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-25 02:30:11,313 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-25 02:30:11,352 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-04-25 02:30:11,385 INFO L125 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-25 02:30:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2025-04-25 02:30:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-25 02:30:11,388 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) [2025-04-25 02:30:11,389 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 [2025-04-25 02:30:11,451 INFO L177 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2025-04-25 02:30:11,459 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2025-04-25 02:30:11,465 INFO L340 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;@69c15f93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-25 02:30:11,465 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-25 02:30:11,573 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-25 02:30:11,576 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:30:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2004819260, now seen corresponding path program 1 times [2025-04-25 02:30:11,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:30:11,583 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122497442] [2025-04-25 02:30:11,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 02:30:11,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:30:11,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-04-25 02:30:11,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-04-25 02:30:11,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 02:30:11,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 02:30:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 02:30:12,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 02:30:12,022 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122497442] [2025-04-25 02:30:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122497442] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 02:30:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 02:30:12,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-04-25 02:30:12,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245434417] [2025-04-25 02:30:12,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 02:30:12,027 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-25 02:30:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 02:30:12,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-25 02:30:12,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-04-25 02:30:12,044 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:12,045 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 02:30:12,046 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2025-04-25 02:30:12,047 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:12,149 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,150 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-25 02:30:12,150 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-25 02:30:12,151 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:30:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 437944729, now seen corresponding path program 1 times [2025-04-25 02:30:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:30:12,151 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205067338] [2025-04-25 02:30:12,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-25 02:30:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:30:12,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-04-25 02:30:12,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-25 02:30:12,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-25 02:30:12,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 02:30:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 02:30:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 02:30:12,337 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205067338] [2025-04-25 02:30:12,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205067338] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 02:30:12,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 02:30:12,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-25 02:30:12,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067676294] [2025-04-25 02:30:12,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 02:30:12,341 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-25 02:30:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 02:30:12,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-25 02:30:12,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-25 02:30:12,342 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:12,343 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 02:30:12,343 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-25 02:30:12,343 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,343 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:12,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,508 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,512 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-25 02:30:12,513 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-25 02:30:12,513 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:30:12,513 INFO L85 PathProgramCache]: Analyzing trace with hash 27523933, now seen corresponding path program 2 times [2025-04-25 02:30:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:30:12,513 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005680753] [2025-04-25 02:30:12,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-25 02:30:12,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:30:12,522 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 1 equivalence classes. [2025-04-25 02:30:12,529 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-25 02:30:12,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-25 02:30:12,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 02:30:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 02:30:12,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 02:30:12,672 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005680753] [2025-04-25 02:30:12,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005680753] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 02:30:12,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 02:30:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-25 02:30:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203846061] [2025-04-25 02:30:12,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 02:30:12,673 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-25 02:30:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 02:30:12,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-25 02:30:12,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-25 02:30:12,674 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:12,674 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 02:30:12,674 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-25 02:30:12,674 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,675 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,675 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:12,928 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,928 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,929 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:12,929 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-25 02:30:12,929 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-25 02:30:12,930 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:30:12,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1339119037, now seen corresponding path program 3 times [2025-04-25 02:30:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:30:12,930 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113948067] [2025-04-25 02:30:12,932 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-25 02:30:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:30:12,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 1 equivalence classes. [2025-04-25 02:30:12,948 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-04-25 02:30:12,948 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-25 02:30:12,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 02:30:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 02:30:13,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 02:30:13,089 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113948067] [2025-04-25 02:30:13,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113948067] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 02:30:13,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 02:30:13,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-25 02:30:13,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670209692] [2025-04-25 02:30:13,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 02:30:13,090 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-25 02:30:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 02:30:13,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-25 02:30:13,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-25 02:30:13,091 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:13,092 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 02:30:13,092 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-25 02:30:13,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,092 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:13,234 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,234 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,239 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,239 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,239 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-25 02:30:13,239 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-25 02:30:13,239 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-25 02:30:13,239 INFO L85 PathProgramCache]: Analyzing trace with hash -832432495, now seen corresponding path program 4 times [2025-04-25 02:30:13,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-25 02:30:13,239 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059573325] [2025-04-25 02:30:13,240 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-25 02:30:13,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-25 02:30:13,248 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 32 statements into 2 equivalence classes. [2025-04-25 02:30:13,255 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-04-25 02:30:13,255 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-25 02:30:13,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-25 02:30:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-25 02:30:13,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-25 02:30:13,344 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059573325] [2025-04-25 02:30:13,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059573325] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-25 02:30:13,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-25 02:30:13,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-04-25 02:30:13,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282655907] [2025-04-25 02:30:13,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-25 02:30:13,344 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-25 02:30:13,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-25 02:30:13,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-25 02:30:13,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-04-25 02:30:13,345 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:13,345 INFO L485 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2025-04-25 02:30:13,345 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-25 02:30:13,345 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,345 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,345 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,345 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,345 INFO L153 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2025-04-25 02:30:13,528 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,528 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,528 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,528 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,529 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-25 02:30:13,532 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-25 02:30:13,534 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-25 02:30:13,535 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-25 02:30:13,535 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-25 02:30:13,535 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-25 02:30:13,541 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1] [2025-04-25 02:30:13,544 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-25 02:30:13,544 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-25 02:30:13,552 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 [2025-04-25 02:30:13,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.04 02:30:13 BasicIcfg [2025-04-25 02:30:13,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-25 02:30:13,554 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-25 02:30:13,554 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-25 02:30:13,554 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-25 02:30:13,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.04 02:30:11" (3/4) ... [2025-04-25 02:30:13,556 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-25 02:30:13,558 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2025-04-25 02:30:13,558 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2025-04-25 02:30:13,558 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2025-04-25 02:30:13,561 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2025-04-25 02:30:13,562 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-04-25 02:30:13,562 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-25 02:30:13,562 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-25 02:30:13,616 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2025-04-25 02:30:13,617 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2025-04-25 02:30:13,617 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-25 02:30:13,619 INFO L158 Benchmark]: Toolchain (without parser) took 3191.37ms. Allocated memory is still 167.8MB. Free memory was 133.7MB in the beginning and 119.3MB in the end (delta: 14.4MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2025-04-25 02:30:13,619 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:30:13,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.04ms. Allocated memory is still 167.8MB. Free memory was 133.3MB in the beginning and 111.2MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-25 02:30:13,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.18ms. Allocated memory is still 167.8MB. Free memory was 111.2MB in the beginning and 109.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:30:13,620 INFO L158 Benchmark]: Boogie Preprocessor took 18.69ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 108.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:30:13,621 INFO L158 Benchmark]: RCFGBuilder took 350.09ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 89.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-25 02:30:13,621 INFO L158 Benchmark]: TraceAbstraction took 2258.19ms. Allocated memory is still 167.8MB. Free memory was 89.0MB in the beginning and 124.3MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:30:13,622 INFO L158 Benchmark]: Witness Printer took 63.92ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 119.3MB in the end (delta: 5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-25 02:30:13,623 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.04ms. Allocated memory is still 167.8MB. Free memory was 133.3MB in the beginning and 111.2MB in the end (delta: 22.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.18ms. Allocated memory is still 167.8MB. Free memory was 111.2MB in the beginning and 109.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.69ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 108.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 350.09ms. Allocated memory is still 167.8MB. Free memory was 108.0MB in the beginning and 89.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2258.19ms. Allocated memory is still 167.8MB. Free memory was 89.0MB in the beginning and 124.3MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 63.92ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 119.3MB in the end (delta: 5.0MB). There was no memory consumed. 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: 769, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 769, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 769, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 769, independent: 743, independent conditional: 0, independent unconditional: 743, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 26, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 26, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 769, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 769, unknown conditional: 0, unknown unconditional: 769] , Statistics on independence cache: Total cache size (in pairs): 769, Positive cache size: 751, Positive conditional cache size: 0, Positive unconditional cache size: 751, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 0, Persistent sets #1 benchmarks: Persistent set computation time: 0.2s, Number of persistent set computation: 703, Number of trivial persistent sets: 218, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 769, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 769, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 769, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 769, independent: 743, independent conditional: 0, independent unconditional: 743, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 26, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 26, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Symbolic Condition Computations: 0, Symbolic Conditions with UNKNOWN Satisfiability: 0, Protected Queries: 0 ], Cache Queries: [ total: 769, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 769, unknown conditional: 0, unknown unconditional: 769] , Statistics on independence cache: Total cache size (in pairs): 769, Positive cache size: 751, Positive conditional cache size: 0, Positive unconditional cache size: 751, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Independence queries for same thread: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 68 locations, 65 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 4, EmptinessCheckTime: 1.0s, 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: 30, 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, 0.9s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-25 02:30:13,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE