./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.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_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/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_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/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_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/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 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:21,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:21,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:22,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:22,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:22,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:22,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:22,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:22,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:22,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:22,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:22,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:22,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:22,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:22,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:22,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:22,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:22,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:22,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:22,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:22,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:22,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:22,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:22,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:22,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:22,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:22,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:22,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:22,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:22,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:22,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:22,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:22,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:22,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:22,117 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:22,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:22,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:22,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:22,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:22,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:22,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:22,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:22,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:22,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:22,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:22,170 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:22,170 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:22,171 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:22,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:22,171 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:22,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:22,172 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:22,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:22,173 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:22,173 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:22,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:22,174 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:22,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:22,175 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:22,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:22,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:22,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:22,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:22,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:22,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:22,176 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:22,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:22,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:22,177 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:22,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:22,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:22,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:22,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:22,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:22,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:22,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:22,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:22,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:22,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:22,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:22,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:22,182 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_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2021-10-11 02:29:22,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:22,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:22,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:22,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:22,556 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:22,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 02:29:22,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/data/eda1a45bf/75dd5c2c668f432baa6d2bcd593bf992/FLAG4d4ed03b0 [2021-10-11 02:29:23,205 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:23,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/sv-benchmarks/c/locks/test_locks_14-2.c [2021-10-11 02:29:23,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/data/eda1a45bf/75dd5c2c668f432baa6d2bcd593bf992/FLAG4d4ed03b0 [2021-10-11 02:29:23,550 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/data/eda1a45bf/75dd5c2c668f432baa6d2bcd593bf992 [2021-10-11 02:29:23,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:23,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:23,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:23,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:23,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:23,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:23,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7605ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23, skipping insertion in model container [2021-10-11 02:29:23,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:23,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:23,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:23,838 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_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 02:29:23,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:23,874 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:23,936 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_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2021-10-11 02:29:23,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:23,960 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:23,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23 WrapperNode [2021-10-11 02:29:23,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:23,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:23,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:23,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:23,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:24,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:24,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:24,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:24,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... [2021-10-11 02:29:24,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:24,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:24,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:24,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:24,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/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 02:29:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:24,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:24,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:24,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:25,181 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:25,182 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:29:25,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:25 BoogieIcfgContainer [2021-10-11 02:29:25,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:25,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:25,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:25,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:25,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:23" (1/3) ... [2021-10-11 02:29:25,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532af53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:25, skipping insertion in model container [2021-10-11 02:29:25,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:23" (2/3) ... [2021-10-11 02:29:25,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532af53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:25, skipping insertion in model container [2021-10-11 02:29:25,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:25" (3/3) ... [2021-10-11 02:29:25,196 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2021-10-11 02:29:25,211 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:25,214 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:25,226 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:25,250 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:25,251 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:25,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:25,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:25,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:25,251 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:25,251 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:25,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-10-11 02:29:25,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:25,271 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:25,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:25,272 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:25,278 INFO L82 PathProgramCache]: Analyzing trace with hash -96656291, now seen corresponding path program 1 times [2021-10-11 02:29:25,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:25,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882262434] [2021-10-11 02:29:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:25,577 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 02:29:25,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882262434] [2021-10-11 02:29:25,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:25,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:25,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711252173] [2021-10-11 02:29:25,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:25,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:25,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:25,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:25,605 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2021-10-11 02:29:25,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:25,690 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2021-10-11 02:29:25,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:25,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:29:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:25,704 INFO L225 Difference]: With dead ends: 74 [2021-10-11 02:29:25,704 INFO L226 Difference]: Without dead ends: 63 [2021-10-11 02:29:25,708 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 02:29:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-11 02:29:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2021-10-11 02:29:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:29:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2021-10-11 02:29:25,751 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2021-10-11 02:29:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:25,752 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2021-10-11 02:29:25,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2021-10-11 02:29:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:25,753 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:25,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:25,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:25,753 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:25,755 INFO L82 PathProgramCache]: Analyzing trace with hash -96649099, now seen corresponding path program 1 times [2021-10-11 02:29:25,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:25,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497837182] [2021-10-11 02:29:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:25,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:25,882 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:25,919 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:25,920 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:25,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:25,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:25 BoogieIcfgContainer [2021-10-11 02:29:25,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:25,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:25,974 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:25,974 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:25,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:25" (3/4) ... [2021-10-11 02:29:25,977 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:26,056 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad84b3d6-6b9f-477b-a83f-ce3e4b1352f2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:26,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:26,059 INFO L168 Benchmark]: Toolchain (without parser) took 2503.06 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 83.1 MB in the beginning and 108.0 MB in the end (delta: -24.9 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:26,059 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:26,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.59 ms. Allocated memory is still 113.2 MB. Free memory was 82.8 MB in the beginning and 86.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:26,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.86 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 84.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:26,062 INFO L168 Benchmark]: Boogie Preprocessor took 34.69 ms. Allocated memory is still 113.2 MB. Free memory was 84.5 MB in the beginning and 83.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:26,063 INFO L168 Benchmark]: RCFGBuilder took 1114.39 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 82.8 MB in the beginning and 96.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:26,063 INFO L168 Benchmark]: TraceAbstraction took 784.91 ms. Allocated memory is still 142.6 MB. Free memory was 95.3 MB in the beginning and 111.2 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:26,064 INFO L168 Benchmark]: Witness Printer took 83.43 ms. Allocated memory is still 142.6 MB. Free memory was 111.2 MB in the beginning and 108.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:26,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.59 ms. Allocated memory is still 113.2 MB. Free memory was 82.8 MB in the beginning and 86.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.86 ms. Allocated memory is still 113.2 MB. Free memory was 86.2 MB in the beginning and 84.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.69 ms. Allocated memory is still 113.2 MB. Free memory was 84.5 MB in the beginning and 83.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1114.39 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 82.8 MB in the beginning and 96.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 784.91 ms. Allocated memory is still 142.6 MB. Free memory was 95.3 MB in the beginning and 111.2 MB in the end (delta: -15.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 83.43 ms. Allocated memory is still 142.6 MB. Free memory was 111.2 MB in the beginning and 108.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 219]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND TRUE p8 != 0 [L117] lk8 = 1 [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND TRUE p10 != 0 [L125] lk10 = 1 [L128] COND TRUE p11 != 0 [L129] lk11 = 1 [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L219] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 59 SDslu, 114 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 1 MinimizatonAttempts, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...