./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dfe144c0 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/weaver/popl20-more-min-le-max.wvr.c -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 dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-dfe144c-m [2024-07-20 19:40:04,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-07-20 19:40:04,171 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-07-20 19:40:04,176 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-07-20 19:40:04,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-07-20 19:40:04,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-07-20 19:40:04,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-07-20 19:40:04,200 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-07-20 19:40:04,201 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-07-20 19:40:04,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-07-20 19:40:04,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-07-20 19:40:04,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-07-20 19:40:04,205 INFO L153 SettingsManager]: * Use SBE=true [2024-07-20 19:40:04,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-07-20 19:40:04,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-07-20 19:40:04,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-07-20 19:40:04,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-07-20 19:40:04,207 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-07-20 19:40:04,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-07-20 19:40:04,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-07-20 19:40:04,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-07-20 19:40:04,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-07-20 19:40:04,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-07-20 19:40:04,208 INFO L153 SettingsManager]: * sizeof long double=12 [2024-07-20 19:40:04,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-07-20 19:40:04,208 INFO L153 SettingsManager]: * Use constant arrays=true [2024-07-20 19:40:04,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-07-20 19:40:04,209 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-07-20 19:40:04,209 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-07-20 19:40:04,209 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 19:40:04,210 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-07-20 19:40:04,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-07-20 19:40:04,211 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-07-20 19:40:04,211 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-07-20 19:40:04,211 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-07-20 19:40:04,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbd0a32f8466e9a1ac86b6dfec2b7453fe6f40d8d953742d93d3d05c5ad7b7af [2024-07-20 19:40:04,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-07-20 19:40:04,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-07-20 19:40:04,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-07-20 19:40:04,443 INFO L270 PluginConnector]: Initializing CDTParser... [2024-07-20 19:40:04,444 INFO L274 PluginConnector]: CDTParser initialized [2024-07-20 19:40:04,444 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2024-07-20 19:40:05,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-07-20 19:40:05,676 INFO L384 CDTParser]: Found 1 translation units. [2024-07-20 19:40:05,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2024-07-20 19:40:05,683 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/af88174ea/1147a62ae62f428297f58f8c02eb7793/FLAG3731f54e2 [2024-07-20 19:40:05,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/af88174ea/1147a62ae62f428297f58f8c02eb7793 [2024-07-20 19:40:05,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-07-20 19:40:05,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-07-20 19:40:05,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-07-20 19:40:05,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-07-20 19:40:05,702 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-07-20 19:40:05,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d87326c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05, skipping insertion in model container [2024-07-20 19:40:05,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-07-20 19:40:05,846 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-07-20 19:40:05,852 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 19:40:05,858 INFO L202 MainTranslator]: Completed pre-run [2024-07-20 19:40:05,872 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2024-07-20 19:40:05,874 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-07-20 19:40:05,887 INFO L206 MainTranslator]: Completed translation [2024-07-20 19:40:05,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05 WrapperNode [2024-07-20 19:40:05,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-07-20 19:40:05,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-07-20 19:40:05,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-07-20 19:40:05,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-07-20 19:40:05,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,902 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,916 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2024-07-20 19:40:05,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-07-20 19:40:05,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-07-20 19:40:05,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-07-20 19:40:05,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-07-20 19:40:05,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,952 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,954 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-07-20 19:40:05,955 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-07-20 19:40:05,955 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-07-20 19:40:05,955 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-07-20 19:40:05,956 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (1/1) ... [2024-07-20 19:40:05,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-07-20 19:40:05,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 19:40:05,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-07-20 19:40:05,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-07-20 19:40:06,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-07-20 19:40:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-07-20 19:40:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-07-20 19:40:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-07-20 19:40:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-07-20 19:40:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-07-20 19:40:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-07-20 19:40:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-07-20 19:40:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-07-20 19:40:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-07-20 19:40:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-07-20 19:40:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-07-20 19:40:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-07-20 19:40:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-07-20 19:40:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-07-20 19:40:06,049 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-07-20 19:40:06,127 INFO L244 CfgBuilder]: Building ICFG [2024-07-20 19:40:06,129 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-07-20 19:40:06,337 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-07-20 19:40:06,338 INFO L293 CfgBuilder]: Performing block encoding [2024-07-20 19:40:06,500 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-07-20 19:40:06,504 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-07-20 19:40:06,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 07:40:06 BoogieIcfgContainer [2024-07-20 19:40:06,505 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-07-20 19:40:06,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-07-20 19:40:06,506 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-07-20 19:40:06,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-07-20 19:40:06,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 07:40:05" (1/3) ... [2024-07-20 19:40:06,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3d817f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 07:40:06, skipping insertion in model container [2024-07-20 19:40:06,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 07:40:05" (2/3) ... [2024-07-20 19:40:06,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3d817f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 07:40:06, skipping insertion in model container [2024-07-20 19:40:06,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 07:40:06" (3/3) ... [2024-07-20 19:40:06,511 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2024-07-20 19:40:06,517 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-07-20 19:40:06,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-07-20 19:40:06,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-07-20 19:40:06,526 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-07-20 19:40:06,571 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-07-20 19:40:06,604 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 19:40:06,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-07-20 19:40:06,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 19:40:06,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-07-20 19:40:06,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-07-20 19:40:06,652 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-07-20 19:40:06,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2024-07-20 19:40:06,667 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1270c4b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-07-20 19:40:06,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-07-20 19:40:06,815 INFO L420 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)] === [2024-07-20 19:40:06,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 19:40:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -935378246, now seen corresponding path program 1 times [2024-07-20 19:40:06,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 19:40:06,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959877237] [2024-07-20 19:40:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 19:40:06,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 19:40:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 19:40:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 19:40:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 19:40:07,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959877237] [2024-07-20 19:40:07,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959877237] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 19:40:07,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 19:40:07,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-07-20 19:40:07,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124778441] [2024-07-20 19:40:07,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 19:40:07,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 19:40:07,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 19:40:07,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 19:40:07,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-07-20 19:40:07,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:07,273 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 19:40:07,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 19:40:07,274 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:07,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-07-20 19:40:07,357 INFO L420 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)] === [2024-07-20 19:40:07,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 19:40:07,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1187240671, now seen corresponding path program 1 times [2024-07-20 19:40:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 19:40:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298712708] [2024-07-20 19:40:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 19:40:07,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 19:40:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 19:40:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-07-20 19:40:07,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 19:40:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298712708] [2024-07-20 19:40:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298712708] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 19:40:07,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-07-20 19:40:07,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-07-20 19:40:07,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568808274] [2024-07-20 19:40:07,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 19:40:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-07-20 19:40:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 19:40:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-07-20 19:40:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-07-20 19:40:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:07,473 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 19:40:07,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 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) [2024-07-20 19:40:07,474 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:07,475 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:07,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 19:40:07,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-07-20 19:40:07,548 INFO L420 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)] === [2024-07-20 19:40:07,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 19:40:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash -739793805, now seen corresponding path program 1 times [2024-07-20 19:40:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 19:40:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123621628] [2024-07-20 19:40:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 19:40:07,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 19:40:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 19:40:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 19:40:07,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 19:40:07,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123621628] [2024-07-20 19:40:07,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123621628] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-20 19:40:07,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942404459] [2024-07-20 19:40:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 19:40:07,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-20 19:40:07,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 19:40:07,768 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-20 19:40:07,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-07-20 19:40:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 19:40:07,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2024-07-20 19:40:07,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-20 19:40:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 19:40:08,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-07-20 19:40:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 19:40:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942404459] provided 0 perfect and 2 imperfect interpolant sequences [2024-07-20 19:40:08,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-07-20 19:40:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-07-20 19:40:08,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714342282] [2024-07-20 19:40:08,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-07-20 19:40:08,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-07-20 19:40:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 19:40:08,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-07-20 19:40:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-07-20 19:40:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:08,130 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 19:40:08,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 19:40:08,130 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:08,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 19:40:08,131 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 19:40:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-07-20 19:40:08,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-07-20 19:40:08,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-07-20 19:40:08,433 INFO L420 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)] === [2024-07-20 19:40:08,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-07-20 19:40:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash -348320417, now seen corresponding path program 2 times [2024-07-20 19:40:08,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-07-20 19:40:08,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351684621] [2024-07-20 19:40:08,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-07-20 19:40:08,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-07-20 19:40:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-07-20 19:40:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-07-20 19:40:08,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-07-20 19:40:08,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351684621] [2024-07-20 19:40:08,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351684621] provided 0 perfect and 1 imperfect interpolant sequences [2024-07-20 19:40:08,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601368274] [2024-07-20 19:40:08,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-07-20 19:40:08,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-20 19:40:08,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-07-20 19:40:08,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-07-20 19:40:08,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-07-20 19:40:08,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-07-20 19:40:08,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-07-20 19:40:08,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2024-07-20 19:40:08,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-07-20 19:40:08,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-07-20 19:40:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-07-20 19:40:08,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-07-20 19:40:08,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601368274] provided 1 perfect and 0 imperfect interpolant sequences [2024-07-20 19:40:08,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-07-20 19:40:08,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-07-20 19:40:08,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505666004] [2024-07-20 19:40:08,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-07-20 19:40:08,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-07-20 19:40:08,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-07-20 19:40:08,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-07-20 19:40:08,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-07-20 19:40:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:08,699 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-07-20 19:40:08,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-07-20 19:40:08,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:08,699 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2024-07-20 19:40:08,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2024-07-20 19:40:08,700 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-07-20 19:40:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-07-20 19:40:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-07-20 19:40:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-07-20 19:40:08,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-07-20 19:40:08,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-07-20 19:40:08,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-07-20 19:40:08,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-07-20 19:40:08,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-07-20 19:40:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-07-20 19:40:09,116 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-07-20 19:40:09,118 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-07-20 19:40:09,118 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-07-20 19:40:09,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 07:40:09 BasicIcfg [2024-07-20 19:40:09,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-07-20 19:40:09,129 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-07-20 19:40:09,130 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-07-20 19:40:09,130 INFO L274 PluginConnector]: Witness Printer initialized [2024-07-20 19:40:09,130 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 07:40:06" (3/4) ... [2024-07-20 19:40:09,132 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-07-20 19:40:09,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-07-20 19:40:09,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-07-20 19:40:09,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-07-20 19:40:09,138 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 88 nodes and edges [2024-07-20 19:40:09,138 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-07-20 19:40:09,139 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-07-20 19:40:09,139 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-07-20 19:40:09,198 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.graphml [2024-07-20 19:40:09,198 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/witness.yml [2024-07-20 19:40:09,198 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-07-20 19:40:09,199 INFO L158 Benchmark]: Toolchain (without parser) took 3503.30ms. Allocated memory is still 172.0MB. Free memory was 139.7MB in the beginning and 50.0MB in the end (delta: 89.7MB). Peak memory consumption was 90.8MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,199 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-07-20 19:40:09,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.17ms. Allocated memory is still 172.0MB. Free memory was 139.7MB in the beginning and 127.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.36ms. Allocated memory is still 172.0MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,199 INFO L158 Benchmark]: Boogie Preprocessor took 37.67ms. Allocated memory is still 172.0MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,199 INFO L158 Benchmark]: RCFGBuilder took 550.11ms. Allocated memory is still 172.0MB. Free memory was 123.0MB in the beginning and 87.3MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,200 INFO L158 Benchmark]: TraceAbstraction took 2613.45ms. Allocated memory is still 172.0MB. Free memory was 87.3MB in the beginning and 55.2MB in the end (delta: 32.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,200 INFO L158 Benchmark]: Witness Printer took 68.84ms. Allocated memory is still 172.0MB. Free memory was 55.2MB in the beginning and 50.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-07-20 19:40:09,201 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 117.4MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.17ms. Allocated memory is still 172.0MB. Free memory was 139.7MB in the beginning and 127.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.36ms. Allocated memory is still 172.0MB. Free memory was 127.2MB in the beginning and 125.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.67ms. Allocated memory is still 172.0MB. Free memory was 125.1MB in the beginning and 123.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 550.11ms. Allocated memory is still 172.0MB. Free memory was 123.0MB in the beginning and 87.3MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2613.45ms. Allocated memory is still 172.0MB. Free memory was 87.3MB in the beginning and 55.2MB in the end (delta: 32.1MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Witness Printer took 68.84ms. Allocated memory is still 172.0MB. Free memory was 55.2MB in the beginning and 50.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation #1 benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2876, independent: 2556, independent conditional: 2058, independent unconditional: 498, dependent: 320, dependent conditional: 312, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2564, independent: 2556, independent conditional: 2058, independent unconditional: 498, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2564, independent: 2556, independent conditional: 2058, independent unconditional: 498, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2628, independent: 2556, independent conditional: 64, independent unconditional: 2492, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2628, independent: 2556, independent conditional: 64, independent unconditional: 2492, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2628, independent: 2556, independent conditional: 64, independent unconditional: 2492, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 442, independent: 434, independent conditional: 2, independent unconditional: 432, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 442, independent: 430, independent conditional: 0, independent unconditional: 430, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 12, independent: 4, independent conditional: 2, independent unconditional: 2, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 4, independent conditional: 2, independent unconditional: 2, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 55, independent conditional: 5, independent unconditional: 51, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2628, independent: 2122, independent conditional: 62, independent unconditional: 2060, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 442, unknown conditional: 2, unknown unconditional: 440] , Statistics on independence cache: Total cache size (in pairs): 442, Positive cache size: 434, Positive conditional cache size: 2, Positive unconditional cache size: 432, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 1, Independence queries for same thread: 312 - StatisticsResult: Persistent set benchmarks Persistent set computation time: 0.1s, Number of persistent set computation: 214, Number of trivial persistent sets: 186, Underlying independence relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 506, independent: 498, independent conditional: 0, independent unconditional: 498, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2876, independent: 2556, independent conditional: 2058, independent unconditional: 498, dependent: 320, dependent conditional: 312, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2564, independent: 2556, independent conditional: 2058, independent unconditional: 498, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2564, independent: 2556, independent conditional: 2058, independent unconditional: 498, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2628, independent: 2556, independent conditional: 64, independent unconditional: 2492, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2628, independent: 2556, independent conditional: 64, independent unconditional: 2492, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2628, independent: 2556, independent conditional: 64, independent unconditional: 2492, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 442, independent: 434, independent conditional: 2, independent unconditional: 432, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 442, independent: 430, independent conditional: 0, independent unconditional: 430, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Independence Queries: [ total: 12, independent: 4, independent conditional: 2, independent unconditional: 2, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ProtectedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 4, independent conditional: 2, independent unconditional: 2, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 55, independent conditional: 5, independent unconditional: 51, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Protected Queries: 0 ], Cache Queries: [ total: 2628, independent: 2122, independent conditional: 62, independent unconditional: 2060, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 442, unknown conditional: 2, unknown unconditional: 440] , Statistics on independence cache: Total cache size (in pairs): 442, Positive cache size: 434, Positive conditional cache size: 2, Positive unconditional cache size: 432, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 1, Independence queries for same thread: 312 - PositiveResult [Line: 98]: 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, 46 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 0, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.6s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 174 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 713 SizeOfPredicates, 8 NumberOfNonLiveVariables, 344 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 36/46 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-07-20 19:40:09,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2024-07-20 19:40:09,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE