./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe015_rmo.i --full-output --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking DFS --traceabstraction.criterion.for.conditional.commutativity.checking LOOP --traceabstraction.use.limited.checks.recommended.for.dfs true --traceabstraction.limit.for.limited.checks 5 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b86fb0b7 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_rmo.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 fa1630ab5b9ca06d45588653daa6fff0d3a2fbd0851a9f5c3999782c5c51eba5 --traceabstraction.dfs.order.used.in.por LOOP_LOCKSTEP --traceabstraction.additional.conditional.commutativity.checking DFS --traceabstraction.criterion.for.conditional.commutativity.checking LOOP --traceabstraction.use.limited.checks.recommended.for.dfs true --traceabstraction.limit.for.limited.checks 5 -tc /storage/repos/ultimate/releaseScripts/default/benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.conditional-comm-b86fb0b-m [2024-10-19 07:41:30,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-19 07:41:31,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-10-19 07:41:31,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-19 07:41:31,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-19 07:41:31,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-19 07:41:31,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-19 07:41:31,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-19 07:41:31,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-19 07:41:31,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-19 07:41:31,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-19 07:41:31,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-19 07:41:31,104 INFO L153 SettingsManager]: * Use SBE=true [2024-10-19 07:41:31,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-19 07:41:31,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-19 07:41:31,105 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-19 07:41:31,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-19 07:41:31,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-19 07:41:31,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-19 07:41:31,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-19 07:41:31,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-19 07:41:31,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-19 07:41:31,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-19 07:41:31,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-19 07:41:31,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-19 07:41:31,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-19 07:41:31,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-19 07:41:31,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-19 07:41:31,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-19 07:41:31,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-19 07:41:31,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-19 07:41:31,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-19 07:41:31,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-19 07:41:31,116 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-10-19 07:41:31,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-19 07:41:31,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-19 07:41:31,116 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-10-19 07:41:31,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-19 07:41:31,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-19 07:41:31,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-10-19 07:41:31,117 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-10-19 07:41:31,117 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 -> fa1630ab5b9ca06d45588653daa6fff0d3a2fbd0851a9f5c3999782c5c51eba5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: DFS Order used in POR -> LOOP_LOCKSTEP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional conditional commutativity checking -> DFS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Criterion for conditional commutativity checking -> LOOP Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use limited checks (recommended for DFS) -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Limit for limited checks -> 5 [2024-10-19 07:41:31,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-19 07:41:31,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-19 07:41:31,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-19 07:41:31,385 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-19 07:41:31,386 INFO L274 PluginConnector]: CDTParser initialized [2024-10-19 07:41:31,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_rmo.i [2024-10-19 07:41:32,852 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-19 07:41:33,113 INFO L384 CDTParser]: Found 1 translation units. [2024-10-19 07:41:33,113 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_rmo.i [2024-10-19 07:41:33,136 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/02ee805a1/bd5c6956f3b14f6f8bd05ae9227e21bc/FLAGd9e4daecf [2024-10-19 07:41:33,429 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/02ee805a1/bd5c6956f3b14f6f8bd05ae9227e21bc [2024-10-19 07:41:33,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-19 07:41:33,436 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-19 07:41:33,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-19 07:41:33,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-19 07:41:33,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-19 07:41:33,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:41:33" (1/1) ... [2024-10-19 07:41:33,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@499462ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:33, skipping insertion in model container [2024-10-19 07:41:33,446 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 07:41:33" (1/1) ... [2024-10-19 07:41:33,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-19 07:41:33,741 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_rmo.i[988,1001] [2024-10-19 07:41:33,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-19 07:41:34,004 INFO L200 MainTranslator]: Completed pre-run [2024-10-19 07:41:34,018 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_rmo.i[988,1001] [2024-10-19 07:41:34,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-19 07:41:34,122 INFO L204 MainTranslator]: Completed translation [2024-10-19 07:41:34,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34 WrapperNode [2024-10-19 07:41:34,123 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-19 07:41:34,124 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-19 07:41:34,124 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-19 07:41:34,124 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-19 07:41:34,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,193 INFO L138 Inliner]: procedures = 175, calls = 72, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 159 [2024-10-19 07:41:34,198 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-19 07:41:34,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-19 07:41:34,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-19 07:41:34,199 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-19 07:41:34,210 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,233 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,238 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-19 07:41:34,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-19 07:41:34,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-19 07:41:34,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-19 07:41:34,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (1/1) ... [2024-10-19 07:41:34,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-10-19 07:41:34,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 07:41:34,291 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) [2024-10-19 07:41:34,294 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 [2024-10-19 07:41:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-19 07:41:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-19 07:41:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-19 07:41:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-19 07:41:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-19 07:41:34,340 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-19 07:41:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-19 07:41:34,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-19 07:41:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-19 07:41:34,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-19 07:41:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-19 07:41:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-19 07:41:34,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-19 07:41:34,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-19 07:41:34,344 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-19 07:41:34,519 INFO L238 CfgBuilder]: Building ICFG [2024-10-19 07:41:34,521 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-19 07:41:35,056 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-19 07:41:35,056 INFO L287 CfgBuilder]: Performing block encoding [2024-10-19 07:41:35,449 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-19 07:41:35,449 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-19 07:41:35,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:41:35 BoogieIcfgContainer [2024-10-19 07:41:35,451 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-19 07:41:35,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-19 07:41:35,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-19 07:41:35,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-19 07:41:35,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 07:41:33" (1/3) ... [2024-10-19 07:41:35,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4592f0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 07:41:35, skipping insertion in model container [2024-10-19 07:41:35,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 07:41:34" (2/3) ... [2024-10-19 07:41:35,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4592f0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 07:41:35, skipping insertion in model container [2024-10-19 07:41:35,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 07:41:35" (3/3) ... [2024-10-19 07:41:35,462 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_rmo.i [2024-10-19 07:41:35,481 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-19 07:41:35,481 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-19 07:41:35,481 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-19 07:41:35,556 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-19 07:41:35,605 INFO L106 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-19 07:41:35,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-10-19 07:41:35,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-10-19 07:41:35,608 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) [2024-10-19 07:41:35,610 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 [2024-10-19 07:41:35,739 INFO L194 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-10-19 07:41:35,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 07:41:35,765 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-10-19 07:41:35,772 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;@6e1bfa41, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms], mConComChecker=DFS, mConComCheckerCriterion=LOOP, mConComCheckerTraceCheckMode=GENERATOR, mConComCheckerLimitedChecksCriterion=true, mConComCheckerCriterionLimit=5, mConComCheckerRandomProb=100, mConComCheckerRandomSeed=123, mConComCheckerConditionCriterion=false [2024-10-19 07:41:35,774 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-19 07:42:35,619 INFO L396 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)] === [2024-10-19 07:42:35,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 07:42:35,621 INFO L85 PathProgramCache]: Analyzing trace with hash 283682471, now seen corresponding path program 1 times [2024-10-19 07:42:35,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 07:42:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333545926] [2024-10-19 07:42:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 07:42:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 07:42:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 07:42:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 07:42:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 07:42:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333545926] [2024-10-19 07:42:36,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333545926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 07:42:36,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 07:42:36,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-19 07:42:36,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501872781] [2024-10-19 07:42:36,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 07:42:36,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-19 07:42:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 07:42:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-19 07:42:36,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-19 07:42:36,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 07:42:36,721 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 07:42:36,722 INFO L472 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) [2024-10-19 07:42:36,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 07:42:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-19 07:42:45,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-19 07:42:45,806 INFO L396 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)] === [2024-10-19 07:42:45,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 07:42:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash 139860868, now seen corresponding path program 1 times [2024-10-19 07:42:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 07:42:45,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443786106] [2024-10-19 07:42:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 07:42:45,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 07:42:46,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 07:42:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 07:42:49,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 07:42:49,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443786106] [2024-10-19 07:42:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443786106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 07:42:49,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 07:42:49,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-19 07:42:49,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937244419] [2024-10-19 07:42:49,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 07:42:49,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-19 07:42:49,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 07:42:49,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-19 07:42:49,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-10-19 07:42:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 07:42:49,008 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 07:42:49,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 07:42:49,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-19 07:42:49,009 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-10-19 07:49:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-19 07:49:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-19 07:49:29,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-19 07:49:29,843 INFO L396 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)] === [2024-10-19 07:49:29,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-19 07:49:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1923559872, now seen corresponding path program 2 times [2024-10-19 07:49:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-19 07:49:29,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983391953] [2024-10-19 07:49:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-19 07:49:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-19 07:49:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-19 07:49:31,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-19 07:49:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-19 07:49:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983391953] [2024-10-19 07:49:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983391953] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-19 07:49:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-19 07:49:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-19 07:49:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526232600] [2024-10-19 07:49:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-19 07:49:31,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-19 07:49:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-19 07:49:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-19 07:49:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-19 07:49:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-19 07:49:31,868 INFO L471 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-10-19 07:49:31,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-19 07:49:31,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2024-10-19 07:49:31,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-10-19 07:49:31,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Killed by 15