./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI --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 d2a1f90505878c0035f7701a954d17ca4375eb05 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:26,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:26,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:26,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:26,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:26,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:26,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:26,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:26,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:26,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:26,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:26,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:26,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:26,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:26,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:26,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:26,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:26,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:26,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:26,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:26,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:26,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:26,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:26,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:26,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:26,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:26,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:26,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:26,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:26,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:26,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:26,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:26,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:26,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:26,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:26,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:26,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:26,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:26,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:26,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:26,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:26,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:26,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:26,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:26,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:26,498 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:26,498 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:26,498 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:26,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:26,499 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:26,499 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:26,499 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:26,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:26,506 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:26,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:26,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:26,507 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:26,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:26,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:26,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:26,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:26,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:26,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:26,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:26,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:26,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:26,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:26,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:26,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:26,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:26,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:26,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:26,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:26,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:26,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:26,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:26,511 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:26,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:26,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:26,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:26,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:26,513 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_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2a1f90505878c0035f7701a954d17ca4375eb05 [2021-10-11 02:29:26,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:26,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:26,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:26,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:26,858 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:26,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_7.c [2021-10-11 02:29:26,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/data/41e32dde7/5e13a585549440c6b68a890156897260/FLAGd5e388b72 [2021-10-11 02:29:27,406 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:27,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/sv-benchmarks/c/locks/test_locks_7.c [2021-10-11 02:29:27,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/data/41e32dde7/5e13a585549440c6b68a890156897260/FLAGd5e388b72 [2021-10-11 02:29:27,769 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/data/41e32dde7/5e13a585549440c6b68a890156897260 [2021-10-11 02:29:27,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:27,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:27,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:27,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:27,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:27,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:27" (1/1) ... [2021-10-11 02:29:27,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4501a39c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:27, skipping insertion in model container [2021-10-11 02:29:27,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:27" (1/1) ... [2021-10-11 02:29:27,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:27,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:27,981 WARN L226 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_55b91fb3-1d19-4da7-a10f-80c97064c96b/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2021-10-11 02:29:27,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:27,993 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:28,014 WARN L226 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_55b91fb3-1d19-4da7-a10f-80c97064c96b/sv-benchmarks/c/locks/test_locks_7.c[2881,2894] [2021-10-11 02:29:28,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:28,029 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:28,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28 WrapperNode [2021-10-11 02:29:28,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:28,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:28,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:28,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:28,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:28,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:28,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:28,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:28,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... [2021-10-11 02:29:28,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:28,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:28,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:28,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:28,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:28,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:28,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:28,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:28,855 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:29:28,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:28 BoogieIcfgContainer [2021-10-11 02:29:28,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:28,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:28,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:28,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:28,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:27" (1/3) ... [2021-10-11 02:29:28,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e170a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:28, skipping insertion in model container [2021-10-11 02:29:28,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:28" (2/3) ... [2021-10-11 02:29:28,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e170a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:28, skipping insertion in model container [2021-10-11 02:29:28,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:28" (3/3) ... [2021-10-11 02:29:28,871 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2021-10-11 02:29:28,889 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:28,893 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:28,906 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:28,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:28,946 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:28,946 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:28,946 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:28,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:28,947 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:28,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:28,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:28,962 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-10-11 02:29:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:28,968 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:28,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:28,970 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:28,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:28,976 INFO L82 PathProgramCache]: Analyzing trace with hash 787438050, now seen corresponding path program 1 times [2021-10-11 02:29:28,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:28,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284348788] [2021-10-11 02:29:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:29,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284348788] [2021-10-11 02:29:29,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:29,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784325827] [2021-10-11 02:29:29,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:29,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:29,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:29,295 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2021-10-11 02:29:29,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,376 INFO L93 Difference]: Finished difference Result 46 states and 73 transitions. [2021-10-11 02:29:29,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:29,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:29:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,388 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:29:29,393 INFO L226 Difference]: Without dead ends: 35 [2021-10-11 02:29:29,405 INFO L677 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 [2021-10-11 02:29:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-11 02:29:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 19. [2021-10-11 02:29:29,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:29:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2021-10-11 02:29:29,451 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2021-10-11 02:29:29,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,452 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2021-10-11 02:29:29,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2021-10-11 02:29:29,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:29,454 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:29,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1359009906, now seen corresponding path program 1 times [2021-10-11 02:29:29,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683868453] [2021-10-11 02:29:29,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:29,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683868453] [2021-10-11 02:29:29,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:29,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91913623] [2021-10-11 02:29:29,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:29,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:29,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:29,543 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand 4 states. [2021-10-11 02:29:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,565 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2021-10-11 02:29:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:29,566 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:29:29,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,567 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:29:29,567 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:29:29,568 INFO L677 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 [2021-10-11 02:29:29,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:29:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2021-10-11 02:29:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:29:29,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2021-10-11 02:29:29,573 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 7 [2021-10-11 02:29:29,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,573 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-10-11 02:29:29,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:29,573 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2021-10-11 02:29:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:29:29,574 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:29,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,576 INFO L82 PathProgramCache]: Analyzing trace with hash 820580535, now seen corresponding path program 1 times [2021-10-11 02:29:29,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799287286] [2021-10-11 02:29:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:29,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799287286] [2021-10-11 02:29:29,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:29,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574107385] [2021-10-11 02:29:29,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:29,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:29,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:29,669 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 4 states. [2021-10-11 02:29:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,700 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2021-10-11 02:29:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:29,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:29:29,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,702 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:29:29,702 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:29:29,703 INFO L677 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 [2021-10-11 02:29:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:29:29,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-10-11 02:29:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:29:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2021-10-11 02:29:29,707 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 8 [2021-10-11 02:29:29,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,707 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 29 transitions. [2021-10-11 02:29:29,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 29 transitions. [2021-10-11 02:29:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:29:29,708 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:29,709 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,709 INFO L82 PathProgramCache]: Analyzing trace with hash -331592189, now seen corresponding path program 1 times [2021-10-11 02:29:29,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389710187] [2021-10-11 02:29:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:29,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389710187] [2021-10-11 02:29:29,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:29,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076501108] [2021-10-11 02:29:29,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:29,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:29,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:29,790 INFO L87 Difference]: Start difference. First operand 19 states and 29 transitions. Second operand 4 states. [2021-10-11 02:29:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,809 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2021-10-11 02:29:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:29,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:29:29,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,810 INFO L225 Difference]: With dead ends: 31 [2021-10-11 02:29:29,811 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:29:29,811 INFO L677 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 [2021-10-11 02:29:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:29:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-10-11 02:29:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:29:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2021-10-11 02:29:29,816 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 9 [2021-10-11 02:29:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,816 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 28 transitions. [2021-10-11 02:29:29,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2021-10-11 02:29:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:29:29,817 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:29,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1689207924, now seen corresponding path program 1 times [2021-10-11 02:29:29,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312909193] [2021-10-11 02:29:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:29,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312909193] [2021-10-11 02:29:29,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:29,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734618230] [2021-10-11 02:29:29,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:29,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:29,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:29,868 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. Second operand 4 states. [2021-10-11 02:29:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,887 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2021-10-11 02:29:29,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:29,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:29:29,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,888 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:29:29,888 INFO L226 Difference]: Without dead ends: 27 [2021-10-11 02:29:29,889 INFO L677 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 [2021-10-11 02:29:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-11 02:29:29,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-10-11 02:29:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:29:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2021-10-11 02:29:29,893 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 10 [2021-10-11 02:29:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,894 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 27 transitions. [2021-10-11 02:29:29,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2021-10-11 02:29:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:29:29,895 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:29,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,896 INFO L82 PathProgramCache]: Analyzing trace with hash -825622408, now seen corresponding path program 1 times [2021-10-11 02:29:29,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171546568] [2021-10-11 02:29:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:29,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171546568] [2021-10-11 02:29:29,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:29,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:29,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615693384] [2021-10-11 02:29:29,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:29,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:29,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:29,969 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 4 states. [2021-10-11 02:29:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:29,988 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-10-11 02:29:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:29,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 02:29:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:29,990 INFO L225 Difference]: With dead ends: 27 [2021-10-11 02:29:29,990 INFO L226 Difference]: Without dead ends: 25 [2021-10-11 02:29:29,991 INFO L677 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 [2021-10-11 02:29:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-11 02:29:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2021-10-11 02:29:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:29:29,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2021-10-11 02:29:29,996 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 11 [2021-10-11 02:29:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:29,996 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-10-11 02:29:29,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:29,997 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2021-10-11 02:29:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:29:29,997 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:29,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:29,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:29,998 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:29,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash 175725153, now seen corresponding path program 1 times [2021-10-11 02:29:29,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:29,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699163626] [2021-10-11 02:29:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:30,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699163626] [2021-10-11 02:29:30,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:30,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:30,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947740640] [2021-10-11 02:29:30,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:30,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:30,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:30,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:30,052 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand 4 states. [2021-10-11 02:29:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:30,069 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2021-10-11 02:29:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:30,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:29:30,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:30,071 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:29:30,071 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:30,072 INFO L677 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 [2021-10-11 02:29:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:30,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-11 02:29:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:30,073 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:30,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:30,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:30,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:30,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:30,089 INFO L262 CegarLoopResult]: For program point L93-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,090 INFO L262 CegarLoopResult]: For program point L77-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,090 INFO L262 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2021-10-11 02:29:30,090 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:30,091 INFO L265 CegarLoopResult]: At program point L119(lines 7 123) the Hoare annotation is: true [2021-10-11 02:29:30,091 INFO L262 CegarLoopResult]: For program point L103-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,091 INFO L262 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2021-10-11 02:29:30,091 INFO L262 CegarLoopResult]: For program point L88-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,091 INFO L265 CegarLoopResult]: At program point L113-1(lines 32 118) the Hoare annotation is: true [2021-10-11 02:29:30,091 INFO L265 CegarLoopResult]: At program point L122(lines 6 123) the Hoare annotation is: true [2021-10-11 02:29:30,092 INFO L262 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2021-10-11 02:29:30,092 INFO L262 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2021-10-11 02:29:30,092 INFO L258 CegarLoopResult]: At program point L114-1(lines 7 123) the Hoare annotation is: false [2021-10-11 02:29:30,092 INFO L262 CegarLoopResult]: For program point L98-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,093 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2021-10-11 02:29:30,093 INFO L262 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2021-10-11 02:29:30,093 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:30,093 INFO L262 CegarLoopResult]: For program point L83-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,093 INFO L262 CegarLoopResult]: For program point L108-1(lines 32 118) no Hoare annotation was computed. [2021-10-11 02:29:30,093 INFO L262 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2021-10-11 02:29:30,094 INFO L262 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2021-10-11 02:29:30,094 INFO L262 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2021-10-11 02:29:30,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:30 BoogieIcfgContainer [2021-10-11 02:29:30,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:30,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:30,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:30,105 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:30,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:28" (3/4) ... [2021-10-11 02:29:30,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:30,120 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-11 02:29:30,120 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:29:30,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:29:30,121 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:30,171 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55b91fb3-1d19-4da7-a10f-80c97064c96b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:30,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:30,173 INFO L168 Benchmark]: Toolchain (without parser) took 2399.41 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 89.5 MB in the beginning and 106.5 MB in the end (delta: -17.0 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,174 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:30,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.76 ms. Allocated memory is still 123.7 MB. Free memory was 89.4 MB in the beginning and 98.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.94 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 96.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:30,175 INFO L168 Benchmark]: Boogie Preprocessor took 22.47 ms. Allocated memory is still 123.7 MB. Free memory was 96.6 MB in the beginning and 95.7 MB in the end (delta: 903.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,176 INFO L168 Benchmark]: RCFGBuilder took 770.95 ms. Allocated memory is still 123.7 MB. Free memory was 95.3 MB in the beginning and 66.8 MB in the end (delta: 28.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,177 INFO L168 Benchmark]: TraceAbstraction took 1240.58 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 66.4 MB in the beginning and 110.5 MB in the end (delta: -44.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:30,177 INFO L168 Benchmark]: Witness Printer took 67.51 ms. Allocated memory is still 148.9 MB. Free memory was 110.5 MB in the beginning and 106.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:30,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 79.7 MB. Free memory is still 37.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 255.76 ms. Allocated memory is still 123.7 MB. Free memory was 89.4 MB in the beginning and 98.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.94 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 96.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.47 ms. Allocated memory is still 123.7 MB. Free memory was 96.6 MB in the beginning and 95.7 MB in the end (delta: 903.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 770.95 ms. Allocated memory is still 123.7 MB. Free memory was 95.3 MB in the beginning and 66.8 MB in the end (delta: 28.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1240.58 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 66.4 MB in the beginning and 110.5 MB in the end (delta: -44.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.51 ms. Allocated memory is still 148.9 MB. Free memory was 110.5 MB in the beginning and 106.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 187 SDtfs, 156 SDslu, 263 SDs, 0 SdLazy, 63 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, 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, 7 MinimizatonAttempts, 66 StatesRemovedByMinimization, 6 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, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...