./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:45:15,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:45:15,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:45:15,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:45:15,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:45:15,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:45:15,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:45:15,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:45:15,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:45:15,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:45:15,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:45:15,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:45:15,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:45:15,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:45:15,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:45:15,284 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:45:15,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:45:15,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:45:15,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:45:15,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:45:15,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:45:15,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:45:15,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:45:15,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:45:15,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:45:15,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:45:15,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:45:15,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:45:15,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:45:15,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:45:15,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:45:15,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:45:15,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:45:15,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:45:15,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:45:15,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:45:15,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:45:15,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:45:15,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:45:15,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:45:15,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:45:15,328 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:45:15,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:45:15,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:45:15,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:45:15,362 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:45:15,362 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:45:15,363 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:45:15,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:45:15,363 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:45:15,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:45:15,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:45:15,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:45:15,365 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:45:15,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:45:15,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:45:15,366 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:45:15,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:45:15,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:45:15,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:45:15,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:45:15,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:45:15,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:45:15,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:45:15,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:45:15,369 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:45:15,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:45:15,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:45:15,370 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:45:15,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:45:15,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:45:15,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:45:15,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:45:15,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:45:15,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:45:15,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:45:15,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:45:15,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:45:15,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:45:15,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:45:15,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:45:15,374 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0f4ea6e3bcbb2b79339dce82d9fa934022810e04d651b4bbb6fb3904b8f8c98 [2021-10-29 05:45:15,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:45:15,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:45:15,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:45:15,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:45:15,704 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:45:15,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/locks/test_locks_6.c [2021-10-29 05:45:15,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/data/cb77f8d47/4845366c3f8e47879e0123dda52dde8c/FLAG87c38aaf6 [2021-10-29 05:45:16,350 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:45:16,351 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/sv-benchmarks/c/locks/test_locks_6.c [2021-10-29 05:45:16,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/data/cb77f8d47/4845366c3f8e47879e0123dda52dde8c/FLAG87c38aaf6 [2021-10-29 05:45:16,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/data/cb77f8d47/4845366c3f8e47879e0123dda52dde8c [2021-10-29 05:45:16,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:45:16,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:45:16,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:45:16,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:45:16,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:45:16,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:16" (1/1) ... [2021-10-29 05:45:16,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a55d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:16, skipping insertion in model container [2021-10-29 05:45:16,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:45:16" (1/1) ... [2021-10-29 05:45:16,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:45:16,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:45:17,066 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-29 05:45:17,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:45:17,100 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:45:17,160 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2021-10-29 05:45:17,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:45:17,177 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:45:17,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17 WrapperNode [2021-10-29 05:45:17,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:45:17,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:45:17,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:45:17,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:45:17,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:45:17,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:45:17,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:45:17,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:45:17,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:45:17,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:45:17,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:45:17,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:45:17,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (1/1) ... [2021-10-29 05:45:17,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:45:17,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:45:17,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:45:17,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:45:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:45:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:45:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:45:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:45:17,922 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:45:17,922 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:45:17,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:17 BoogieIcfgContainer [2021-10-29 05:45:17,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:45:17,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:45:17,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:45:17,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:45:17,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:45:16" (1/3) ... [2021-10-29 05:45:17,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67934ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:17, skipping insertion in model container [2021-10-29 05:45:17,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:45:17" (2/3) ... [2021-10-29 05:45:17,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67934ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:45:17, skipping insertion in model container [2021-10-29 05:45:17,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:17" (3/3) ... [2021-10-29 05:45:17,940 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2021-10-29 05:45:17,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:45:17,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:45:18,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:45:18,048 INFO L339 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:45:18,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:45:18,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 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) [2021-10-29 05:45:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:45:18,097 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:18,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:45:18,098 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:45:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 300170485, now seen corresponding path program 1 times [2021-10-29 05:45:18,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:18,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677736445] [2021-10-29 05:45:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:18,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:18,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:18,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677736445] [2021-10-29 05:45:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677736445] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:45:18,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:45:18,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:45:18,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031223595] [2021-10-29 05:45:18,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:45:18,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:45:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,410 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-29 05:45:18,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:18,459 INFO L93 Difference]: Finished difference Result 42 states and 65 transitions. [2021-10-29 05:45:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:18,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6 [2021-10-29 05:45:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:18,472 INFO L225 Difference]: With dead ends: 42 [2021-10-29 05:45:18,473 INFO L226 Difference]: Without dead ends: 31 [2021-10-29 05:45:18,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-29 05:45:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-10-29 05:45:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 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) [2021-10-29 05:45:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2021-10-29 05:45:18,516 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2021-10-29 05:45:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:18,517 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2021-10-29 05:45:18,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-29 05:45:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2021-10-29 05:45:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:45:18,518 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:18,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:18,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:45:18,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:45:18,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash 715565087, now seen corresponding path program 1 times [2021-10-29 05:45:18,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:18,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425387695] [2021-10-29 05:45:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:18,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:18,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:18,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425387695] [2021-10-29 05:45:18,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425387695] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:45:18,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:45:18,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:45:18,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387234019] [2021-10-29 05:45:18,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:45:18,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:45:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,601 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-29 05:45:18,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:18,631 INFO L93 Difference]: Finished difference Result 31 states and 47 transitions. [2021-10-29 05:45:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:18,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-10-29 05:45:18,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:18,636 INFO L225 Difference]: With dead ends: 31 [2021-10-29 05:45:18,637 INFO L226 Difference]: Without dead ends: 29 [2021-10-29 05:45:18,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-29 05:45:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2021-10-29 05:45:18,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.625) internal successors, (26), 16 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) [2021-10-29 05:45:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2021-10-29 05:45:18,645 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 26 transitions. Word has length 7 [2021-10-29 05:45:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:18,646 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-10-29 05:45:18,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-29 05:45:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 26 transitions. [2021-10-29 05:45:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:45:18,647 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:18,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:18,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:45:18,648 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:45:18,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 707896202, now seen corresponding path program 1 times [2021-10-29 05:45:18,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:18,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334317195] [2021-10-29 05:45:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:18,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:18,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:18,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334317195] [2021-10-29 05:45:18,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334317195] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:45:18,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:45:18,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:45:18,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286593157] [2021-10-29 05:45:18,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:45:18,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:45:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,708 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-29 05:45:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:18,733 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2021-10-29 05:45:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:18,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) Word has length 8 [2021-10-29 05:45:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:18,735 INFO L225 Difference]: With dead ends: 29 [2021-10-29 05:45:18,735 INFO L226 Difference]: Without dead ends: 27 [2021-10-29 05:45:18,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-29 05:45:18,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2021-10-29 05:45:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5625) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-10-29 05:45:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2021-10-29 05:45:18,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 8 [2021-10-29 05:45:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:18,740 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2021-10-29 05:45:18,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-10-29 05:45:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2021-10-29 05:45:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:45:18,741 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:18,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:18,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:45:18,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:45:18,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:18,742 INFO L85 PathProgramCache]: Analyzing trace with hash 470161108, now seen corresponding path program 1 times [2021-10-29 05:45:18,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:18,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210758712] [2021-10-29 05:45:18,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:18,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:18,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:18,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210758712] [2021-10-29 05:45:18,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210758712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:45:18,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:45:18,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:45:18,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413986099] [2021-10-29 05:45:18,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:45:18,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:18,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:45:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,836 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:45:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:18,871 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-10-29 05:45:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2021-10-29 05:45:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:18,875 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:45:18,875 INFO L226 Difference]: Without dead ends: 25 [2021-10-29 05:45:18,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-29 05:45:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-10-29 05:45:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 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) [2021-10-29 05:45:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2021-10-29 05:45:18,887 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 24 transitions. Word has length 9 [2021-10-29 05:45:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:18,887 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 24 transitions. [2021-10-29 05:45:18,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-10-29 05:45:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2021-10-29 05:45:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:45:18,891 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:18,891 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:18,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:45:18,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:45:18,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:18,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1690308127, now seen corresponding path program 1 times [2021-10-29 05:45:18,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:18,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260814037] [2021-10-29 05:45:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:18,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:19,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:19,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260814037] [2021-10-29 05:45:19,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260814037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:45:19,020 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:45:19,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:45:19,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680222785] [2021-10-29 05:45:19,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:45:19,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:19,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:45:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:19,024 INFO L87 Difference]: Start difference. First operand 17 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:45:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:19,053 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-10-29 05:45:19,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:19,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 10 [2021-10-29 05:45:19,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:19,059 INFO L225 Difference]: With dead ends: 25 [2021-10-29 05:45:19,059 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:45:19,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:45:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-10-29 05:45:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 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) [2021-10-29 05:45:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2021-10-29 05:45:19,071 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 10 [2021-10-29 05:45:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:19,071 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-10-29 05:45:19,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:45:19,072 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2021-10-29 05:45:19,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:45:19,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:45:19,073 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:45:19,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:45:19,074 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:45:19,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:45:19,075 INFO L85 PathProgramCache]: Analyzing trace with hash 860160393, now seen corresponding path program 1 times [2021-10-29 05:45:19,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:45:19,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847370869] [2021-10-29 05:45:19,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:45:19,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:45:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:45:19,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:45:19,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:45:19,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847370869] [2021-10-29 05:45:19,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847370869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:45:19,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:45:19,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:45:19,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607321776] [2021-10-29 05:45:19,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:45:19,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:45:19,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:45:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:19,190 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:45:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:45:19,212 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-10-29 05:45:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:45:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11 [2021-10-29 05:45:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:45:19,215 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:45:19,216 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:45:19,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:45:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:45:19,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:45:19,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-29 05:45:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:45:19,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-10-29 05:45:19,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:45:19,218 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:45:19,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:45:19,218 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:45:19,218 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:45:19,221 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:19,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:45:19,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:45:19,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:19,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:19,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:19,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:45:19,251 INFO L857 garLoopResultBuilder]: For program point L85(line 85) no Hoare annotation was computed. [2021-10-29 05:45:19,251 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:45:19,251 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2021-10-29 05:45:19,252 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-10-29 05:45:19,252 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2021-10-29 05:45:19,252 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-10-29 05:45:19,252 INFO L860 garLoopResultBuilder]: At program point L105(lines 7 109) the Hoare annotation is: true [2021-10-29 05:45:19,252 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-10-29 05:45:19,253 INFO L857 garLoopResultBuilder]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2021-10-29 05:45:19,253 INFO L857 garLoopResultBuilder]: For program point L90(line 90) no Hoare annotation was computed. [2021-10-29 05:45:19,253 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 107) no Hoare annotation was computed. [2021-10-29 05:45:19,253 INFO L857 garLoopResultBuilder]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2021-10-29 05:45:19,253 INFO L860 garLoopResultBuilder]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2021-10-29 05:45:19,254 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:45:19,254 INFO L860 garLoopResultBuilder]: At program point L108(lines 6 109) the Hoare annotation is: true [2021-10-29 05:45:19,254 INFO L857 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2021-10-29 05:45:19,254 INFO L857 garLoopResultBuilder]: For program point L100(line 100) no Hoare annotation was computed. [2021-10-29 05:45:19,254 INFO L853 garLoopResultBuilder]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2021-10-29 05:45:19,255 INFO L857 garLoopResultBuilder]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2021-10-29 05:45:19,255 INFO L857 garLoopResultBuilder]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2021-10-29 05:45:19,259 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-29 05:45:19,263 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:45:19,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:45:19 BoogieIcfgContainer [2021-10-29 05:45:19,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:45:19,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:45:19,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:45:19,278 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:45:19,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:45:17" (3/4) ... [2021-10-29 05:45:19,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:45:19,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-29 05:45:19,298 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:45:19,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:45:19,299 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:45:19,373 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:45:19,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:45:19,376 INFO L168 Benchmark]: Toolchain (without parser) took 2628.79 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 59.8 MB in the beginning and 93.5 MB in the end (delta: -33.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:19,376 INFO L168 Benchmark]: CDTParser took 1.17 ms. Allocated memory is still 92.3 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:19,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.14 ms. Allocated memory is still 92.3 MB. Free memory was 59.4 MB in the beginning and 68.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:19,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.47 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 66.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:19,378 INFO L168 Benchmark]: Boogie Preprocessor took 53.39 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:19,379 INFO L168 Benchmark]: RCFGBuilder took 628.45 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 49.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:19,379 INFO L168 Benchmark]: TraceAbstraction took 1343.97 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 48.9 MB in the beginning and 97.5 MB in the end (delta: -48.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:19,380 INFO L168 Benchmark]: Witness Printer took 95.69 ms. Allocated memory is still 127.9 MB. Free memory was 97.5 MB in the beginning and 93.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:19,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.17 ms. Allocated memory is still 92.3 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 436.14 ms. Allocated memory is still 92.3 MB. Free memory was 59.4 MB in the beginning and 68.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.47 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 66.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.39 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 65.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 628.45 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 49.4 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1343.97 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 48.9 MB in the beginning and 97.5 MB in the end (delta: -48.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 95.69 ms. Allocated memory is still 127.9 MB. Free memory was 97.5 MB in the beginning and 93.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 116 SDslu, 196 SDs, 0 SdLazy, 60 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:45:19,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41c43f5a-8baa-4c73-b5a1-61f4cc608686/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...