./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs --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 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:58:09,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:58:09,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:58:09,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:58:09,320 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:58:09,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:58:09,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:58:09,330 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:58:09,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:58:09,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:58:09,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:58:09,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:58:09,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:58:09,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:58:09,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:58:09,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:58:09,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:58:09,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:58:09,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:58:09,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:58:09,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:58:09,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:58:09,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:58:09,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:58:09,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:58:09,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:58:09,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:58:09,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:58:09,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:58:09,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:58:09,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:58:09,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:58:09,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:58:09,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:58:09,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:58:09,431 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:58:09,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:58:09,432 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:58:09,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:58:09,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:58:09,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:58:09,436 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:58:09,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:58:09,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:58:09,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:58:09,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:58:09,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:58:09,511 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:58:09,511 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:58:09,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:58:09,512 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:58:09,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:58:09,514 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:58:09,515 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:58:09,515 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:58:09,516 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:58:09,516 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:58:09,516 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:58:09,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:58:09,518 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:58:09,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:58:09,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:58:09,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:58:09,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:58:09,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:58:09,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:58:09,520 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:58:09,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:58:09,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:58:09,521 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:58:09,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:58:09,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:58:09,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:58:09,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:09,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:58:09,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:58:09,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:58:09,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:58:09,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:58:09,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:58:09,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:58:09,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:58:09,528 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_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 [2021-11-19 14:58:09,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:58:09,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:58:09,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:58:09,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:58:09,915 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:58:09,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2021-11-19 14:58:10,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/185db1971/957a077ee9e641ae9741f79d87fe6c80/FLAGf13605a99 [2021-11-19 14:58:10,676 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:58:10,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2021-11-19 14:58:10,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/185db1971/957a077ee9e641ae9741f79d87fe6c80/FLAGf13605a99 [2021-11-19 14:58:10,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/185db1971/957a077ee9e641ae9741f79d87fe6c80 [2021-11-19 14:58:10,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:58:10,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:58:10,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:10,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:58:10,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:58:10,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:10" (1/1) ... [2021-11-19 14:58:10,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@591f009d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:10, skipping insertion in model container [2021-11-19 14:58:10,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:10" (1/1) ... [2021-11-19 14:58:10,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:58:11,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:11,591 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-11-19 14:58:11,596 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-11-19 14:58:11,599 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-11-19 14:58:11,602 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:11,614 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 14:58:11,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f22641d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:11, skipping insertion in model container [2021-11-19 14:58:11,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:11,623 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:58:11,627 INFO L158 Benchmark]: Toolchain (without parser) took 661.72ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.1MB in the beginning and 71.7MB in the end (delta: -27.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 14:58:11,627 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:58:11,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.78ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 43.9MB in the beginning and 71.7MB in the end (delta: -27.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 14:58:11,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 81.8MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.78ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 43.9MB in the beginning and 71.7MB in the end (delta: -27.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 638]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs --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 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:58:14,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:58:14,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:58:14,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:58:14,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:58:14,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:58:14,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:58:14,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:58:14,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:58:14,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:58:14,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:58:14,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:58:14,448 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:58:14,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:58:14,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:58:14,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:58:14,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:58:14,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:58:14,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:58:14,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:58:14,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:58:14,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:58:14,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:58:14,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:58:14,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:58:14,496 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:58:14,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:58:14,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:58:14,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:58:14,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:58:14,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:58:14,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:58:14,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:58:14,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:58:14,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:58:14,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:58:14,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:58:14,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:58:14,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:58:14,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:58:14,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:58:14,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:58:14,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:58:14,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:58:14,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:58:14,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:58:14,546 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:58:14,546 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:58:14,546 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:58:14,547 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:58:14,547 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:58:14,547 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:58:14,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:58:14,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:58:14,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:58:14,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:58:14,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:58:14,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:58:14,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:58:14,550 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:58:14,550 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:58:14,552 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:58:14,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:58:14,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:58:14,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:58:14,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:58:14,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:58:14,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:58:14,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:58:14,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:14,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:58:14,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:58:14,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:58:14,556 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:58:14,556 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:58:14,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:58:14,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:58:14,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:58:14,558 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 869ef2ac3e655b6efbdfa5c05d637a0f622008da83d6042d15962fe695aee939 [2021-11-19 14:58:15,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:58:15,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:58:15,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:58:15,047 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:58:15,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:58:15,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2021-11-19 14:58:15,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/75884a940/7b976c72b8584d0e8d88f11c262b805f/FLAG5408219d6 [2021-11-19 14:58:15,902 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:58:15,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2021-11-19 14:58:15,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/75884a940/7b976c72b8584d0e8d88f11c262b805f/FLAG5408219d6 [2021-11-19 14:58:16,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/data/75884a940/7b976c72b8584d0e8d88f11c262b805f [2021-11-19 14:58:16,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:58:16,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:58:16,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:16,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:58:16,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:58:16,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:16,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77141c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16, skipping insertion in model container [2021-11-19 14:58:16,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:16,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:58:16,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:16,703 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-11-19 14:58:16,711 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-11-19 14:58:16,713 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-11-19 14:58:16,717 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:16,732 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:58:16,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:58:16,798 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-11-19 14:58:16,799 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-11-19 14:58:16,800 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-11-19 14:58:16,802 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:16,805 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:58:16,888 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25842,25855] [2021-11-19 14:58:16,889 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[25967,25980] [2021-11-19 14:58:16,890 WARN L230 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_434666f3-90a8-4187-98b4-b8efb7af865b/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i[26082,26095] [2021-11-19 14:58:16,892 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:58:16,953 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:58:16,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16 WrapperNode [2021-11-19 14:58:16,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:58:16,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:58:16,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:58:16,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:58:16,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,035 INFO L137 Inliner]: procedures = 141, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 124 [2021-11-19 14:58:17,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:58:17,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:58:17,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:58:17,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:58:17,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:58:17,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:58:17,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:58:17,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:58:17,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (1/1) ... [2021-11-19 14:58:17,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:58:17,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:58:17,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:58:17,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:58:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-19 14:58:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-19 14:58:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-19 14:58:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-19 14:58:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:58:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-19 14:58:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-19 14:58:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:58:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:58:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:58:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-11-19 14:58:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-11-19 14:58:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:58:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:58:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:58:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:58:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-11-19 14:58:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-11-19 14:58:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:58:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:58:17,378 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:58:17,381 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:58:18,008 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:58:18,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:58:18,016 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 14:58:18,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:18 BoogieIcfgContainer [2021-11-19 14:58:18,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:58:18,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:58:18,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:58:18,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:58:18,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:58:16" (1/3) ... [2021-11-19 14:58:18,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dec7ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:58:18, skipping insertion in model container [2021-11-19 14:58:18,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:58:16" (2/3) ... [2021-11-19 14:58:18,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dec7ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:58:18, skipping insertion in model container [2021-11-19 14:58:18,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:18" (3/3) ... [2021-11-19 14:58:18,028 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2021-11-19 14:58:18,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:58:18,035 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-19 14:58:18,128 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:58:18,146 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 14:58:18,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-19 14:58:18,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:58:18,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:58:18,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:18,183 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:18,185 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 673246785, now seen corresponding path program 1 times [2021-11-19 14:58:18,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:18,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739717626] [2021-11-19 14:58:18,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:18,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:18,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:18,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:18,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:58:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:18,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:58:18,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:58:18,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 14:58:18,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:18,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739717626] [2021-11-19 14:58:18,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739717626] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:18,744 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:18,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:58:18,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805797213] [2021-11-19 14:58:18,748 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:18,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:58:18,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:18,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:58:18,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:58:18,814 INFO L87 Difference]: Start difference. First operand has 67 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 14:58:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:18,879 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2021-11-19 14:58:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:58:18,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-11-19 14:58:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:18,895 INFO L225 Difference]: With dead ends: 130 [2021-11-19 14:58:18,895 INFO L226 Difference]: Without dead ends: 62 [2021-11-19 14:58:18,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:58:18,910 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:18,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:58:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-19 14:58:18,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-19 14:58:18,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 45 states have internal predecessors, (50), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 14:58:19,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-11-19 14:58:19,010 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 27 [2021-11-19 14:58:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:19,011 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-11-19 14:58:19,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 14:58:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-11-19 14:58:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:58:19,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:19,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:19,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:19,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:19,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash -387762175, now seen corresponding path program 1 times [2021-11-19 14:58:19,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:19,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521288769] [2021-11-19 14:58:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:19,242 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:19,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:19,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:19,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:58:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:19,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:58:19,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:58:20,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:58:20,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:20,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521288769] [2021-11-19 14:58:20,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521288769] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:20,998 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:20,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2021-11-19 14:58:20,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950245846] [2021-11-19 14:58:20,999 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:21,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:58:21,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:58:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:58:21,003 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:58:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:22,067 INFO L93 Difference]: Finished difference Result 195 states and 243 transitions. [2021-11-19 14:58:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:58:22,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 27 [2021-11-19 14:58:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:22,073 INFO L225 Difference]: With dead ends: 195 [2021-11-19 14:58:22,074 INFO L226 Difference]: Without dead ends: 141 [2021-11-19 14:58:22,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:58:22,076 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 103 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:22,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 287 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:58:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-19 14:58:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 120. [2021-11-19 14:58:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 90 states have internal predecessors, (106), 19 states have call successors, (19), 9 states have call predecessors, (19), 13 states have return successors, (31), 20 states have call predecessors, (31), 19 states have call successors, (31) [2021-11-19 14:58:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2021-11-19 14:58:22,115 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 27 [2021-11-19 14:58:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:22,116 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2021-11-19 14:58:22,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 14:58:22,116 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2021-11-19 14:58:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 14:58:22,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:22,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:22,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:22,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:22,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash -438555830, now seen corresponding path program 1 times [2021-11-19 14:58:22,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:22,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465644632] [2021-11-19 14:58:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:22,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:22,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:22,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:22,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:58:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:22,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:58:22,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:22,500 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:58:22,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 14:58:22,573 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:22,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465644632] [2021-11-19 14:58:22,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465644632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:22,574 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:22,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 14:58:22,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204983063] [2021-11-19 14:58:22,575 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:22,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:58:22,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:58:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:58:22,577 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:58:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:22,595 INFO L93 Difference]: Finished difference Result 127 states and 166 transitions. [2021-11-19 14:58:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:58:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-19 14:58:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:22,598 INFO L225 Difference]: With dead ends: 127 [2021-11-19 14:58:22,598 INFO L226 Difference]: Without dead ends: 125 [2021-11-19 14:58:22,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:58:22,600 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:22,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 215 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:58:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-19 14:58:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2021-11-19 14:58:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 19 states have call successors, (19), 9 states have call predecessors, (19), 14 states have return successors, (35), 21 states have call predecessors, (35), 19 states have call successors, (35) [2021-11-19 14:58:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2021-11-19 14:58:22,621 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 27 [2021-11-19 14:58:22,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:22,621 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2021-11-19 14:58:22,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 14:58:22,622 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2021-11-19 14:58:22,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 14:58:22,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:22,625 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:22,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:22,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:22,838 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:22,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:22,839 INFO L85 PathProgramCache]: Analyzing trace with hash -811626959, now seen corresponding path program 1 times [2021-11-19 14:58:22,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:22,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75072690] [2021-11-19 14:58:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:22,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:22,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:22,841 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:22,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:58:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:22,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 14:58:22,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:23,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-19 14:58:23,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-19 14:58:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-19 14:58:23,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:24,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 14:58:24,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-19 14:58:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-19 14:58:25,079 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:25,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75072690] [2021-11-19 14:58:25,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75072690] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:58:25,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:58:25,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2021-11-19 14:58:25,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657635854] [2021-11-19 14:58:25,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:25,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:58:25,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:58:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:58:25,081 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-19 14:58:27,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:27,130 INFO L93 Difference]: Finished difference Result 291 states and 374 transitions. [2021-11-19 14:58:27,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:58:27,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 67 [2021-11-19 14:58:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:27,134 INFO L225 Difference]: With dead ends: 291 [2021-11-19 14:58:27,134 INFO L226 Difference]: Without dead ends: 166 [2021-11-19 14:58:27,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-11-19 14:58:27,137 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 249 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:27,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 311 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 14:58:27,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-19 14:58:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 122. [2021-11-19 14:58:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 19 states have call successors, (19), 10 states have call predecessors, (19), 14 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2021-11-19 14:58:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2021-11-19 14:58:27,159 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 67 [2021-11-19 14:58:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:27,160 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2021-11-19 14:58:27,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-11-19 14:58:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2021-11-19 14:58:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 14:58:27,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:27,164 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:27,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:27,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:27,378 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1108503363, now seen corresponding path program 1 times [2021-11-19 14:58:27,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:27,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165007691] [2021-11-19 14:58:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:27,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:27,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:27,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:58:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:27,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:58:27,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:27,694 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 14:58:27,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-19 14:58:27,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:27,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165007691] [2021-11-19 14:58:27,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165007691] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:58:27,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:58:27,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-19 14:58:27,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824477528] [2021-11-19 14:58:27,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:27,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:58:27,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:27,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:58:27,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:58:27,916 INFO L87 Difference]: Start difference. First operand 122 states and 153 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:58:27,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:27,938 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2021-11-19 14:58:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:58:27,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2021-11-19 14:58:27,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:27,941 INFO L225 Difference]: With dead ends: 196 [2021-11-19 14:58:27,941 INFO L226 Difference]: Without dead ends: 109 [2021-11-19 14:58:27,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:58:27,944 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:27,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:58:27,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-19 14:58:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2021-11-19 14:58:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 77 states have internal predecessors, (83), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2021-11-19 14:58:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2021-11-19 14:58:27,990 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 67 [2021-11-19 14:58:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:27,991 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2021-11-19 14:58:27,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-19 14:58:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2021-11-19 14:58:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 14:58:27,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:27,997 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:28,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:28,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:28,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1210243856, now seen corresponding path program 1 times [2021-11-19 14:58:28,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:28,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030184214] [2021-11-19 14:58:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:28,216 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:28,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:28,218 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:28,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:58:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:58:28,539 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:58:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:58:28,824 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-19 14:58:28,825 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:58:28,826 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-19 14:58:28,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-19 14:58:28,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-19 14:58:28,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:29,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:29,046 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 14:58:29,049 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:58:29,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:58:29 BoogieIcfgContainer [2021-11-19 14:58:29,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:58:29,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:58:29,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:58:29,153 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:58:29,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:18" (3/4) ... [2021-11-19 14:58:29,155 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 14:58:29,265 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 14:58:29,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:58:29,266 INFO L158 Benchmark]: Toolchain (without parser) took 13115.78ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 61.6MB in the beginning and 71.8MB in the end (delta: -10.3MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2021-11-19 14:58:29,266 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:58:29,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.33ms. Allocated memory is still 79.7MB. Free memory was 61.2MB in the beginning and 47.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-19 14:58:29,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.87ms. Allocated memory is still 79.7MB. Free memory was 47.6MB in the beginning and 45.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:58:29,267 INFO L158 Benchmark]: Boogie Preprocessor took 72.57ms. Allocated memory is still 79.7MB. Free memory was 45.2MB in the beginning and 43.1MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 14:58:29,268 INFO L158 Benchmark]: RCFGBuilder took 903.77ms. Allocated memory is still 79.7MB. Free memory was 42.9MB in the beginning and 50.9MB in the end (delta: -8.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:58:29,268 INFO L158 Benchmark]: TraceAbstraction took 11130.45ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 50.4MB in the beginning and 77.1MB in the end (delta: -26.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-11-19 14:58:29,269 INFO L158 Benchmark]: Witness Printer took 113.22ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 71.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 14:58:29,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.33ms. Allocated memory is still 79.7MB. Free memory was 61.2MB in the beginning and 47.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.87ms. Allocated memory is still 79.7MB. Free memory was 47.6MB in the beginning and 45.2MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 72.57ms. Allocated memory is still 79.7MB. Free memory was 45.2MB in the beginning and 43.1MB in the end (delta: 2.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 903.77ms. Allocated memory is still 79.7MB. Free memory was 42.9MB in the beginning and 50.9MB in the end (delta: -8.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 11130.45ms. Allocated memory was 79.7MB in the beginning and 119.5MB in the end (delta: 39.8MB). Free memory was 50.4MB in the beginning and 77.1MB in the end (delta: -26.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 113.22ms. Allocated memory is still 119.5MB. Free memory was 77.1MB in the beginning and 71.8MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; VAL [mutexes={11:0}] [L692] CALL foo() [L681] FCALL ldv_initialize() [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={11:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={11:0}] [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; VAL [\old(size)=8, \result={7:0}, mutexes={11:0}, ptr={7:0}, size=8] [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={7:0}, mutexes={11:0}] [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [mutexes={11:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={11:0}] [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; VAL [\old(size)=8, \result={3:0}, mutexes={11:0}, ptr={3:0}, size=8] [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={3:0}, m1={7:0}, mutexes={11:0}] [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L684] CALL mutex_lock(m1) VAL [mutexes={11:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={7:0}, mutexes={11:0}, s={11:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={11:0}, e={7:0}, e={7:0}, m={11:-4}, mutexes={11:0}, s={11:0}, s={11:0}] [L655] COND FALSE !(&m->list != (s)) VAL [__mptr={11:0}, e={7:0}, e={7:0}, m={11:-4}, mutexes={11:0}, s={11:0}, s={11:0}] [L660] return 0; VAL [\result=0, __mptr={11:0}, e={7:0}, e={7:0}, m={11:-4}, mutexes={11:0}, s={11:0}, s={11:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={7:0}, m={7:0}, mutexes={11:0}] [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L670] CALL ldv_set_add(m, &mutexes) [L636] CALL, EXPR ldv_is_in_set(new, s) VAL [e={7:0}, mutexes={11:0}, s={11:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={11:0}, e={7:0}, e={7:0}, m={11:-4}, mutexes={11:0}, s={11:0}, s={11:0}] [L655] COND FALSE !(&m->list != (s)) VAL [__mptr={11:0}, e={7:0}, e={7:0}, m={11:-4}, mutexes={11:0}, s={11:0}, s={11:0}] [L660] return 0; VAL [\result=0, __mptr={11:0}, e={7:0}, e={7:0}, m={11:-4}, mutexes={11:0}, s={11:0}, s={11:0}] [L636] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={11:0}, new={7:0}, new={7:0}, s={11:0}, s={11:0}] [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; VAL [mutexes={11:0}, new={7:0}, new={7:0}, s={11:0}, s={11:0}] [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [mutexes={11:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) [L565] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={11:0}] [L577] RET assume_abort_if_not(ptr!=0) [L578] return ptr; VAL [\old(size)=12, \result={6:0}, mutexes={11:0}, ptr={6:0}, size=12] [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={6:0}, mutexes={11:0}, new={7:0}, new={7:0}, s={11:0}, s={11:0}] [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] le->e = new [L640] CALL ldv_list_add(&le->list, s) [L608] EXPR head->next VAL [head={11:0}, head={11:0}, head->next={11:0}, mutexes={11:0}, new={6:4}, new={6:4}] [L608] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={11:0}, new={6:4}, next={11:0}, prev={11:0}] [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new VAL [mutexes={11:0}, new={6:4}, new={6:4}, next={11:0}, next={11:0}, prev={11:0}, prev={11:0}] [L608] RET __ldv_list_add(new, head, head->next) VAL [head={11:0}, head={11:0}, head->next={11:0}, mutexes={11:0}, new={6:4}, new={6:4}] [L640] RET ldv_list_add(&le->list, s) [L670] RET ldv_set_add(m, &mutexes) [L684] RET mutex_lock(m1) VAL [m1={7:0}, m2={3:0}, mutexes={11:0}] [L685] CALL mutex_lock(m1) VAL [mutexes={11:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={7:0}, mutexes={11:0}, s={11:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={6:4}, e={7:0}, e={7:0}, m={6:0}, mutexes={11:0}, s={11:0}, s={11:0}] [L655] COND TRUE &m->list != (s) [L656] EXPR m->e VAL [__mptr={6:4}, e={7:0}, e={7:0}, m={6:0}, m->e={7:0}, mutexes={11:0}, s={11:0}, s={11:0}] [L656] COND TRUE m->e == e [L657] return 1; VAL [\result=1, __mptr={6:4}, e={7:0}, e={7:0}, m={6:0}, mutexes={11:0}, s={11:0}, s={11:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={7:0}, m={7:0}, mutexes={11:0}] [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() VAL [m={7:0}, m={7:0}, mutexes={11:0}] - UnprovableResult [Line: 673]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 67 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 352 mSDsluCounter, 1102 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 713 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 595 IncrementalHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 389 mSDtfsCounter, 595 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 432 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=3, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 73 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 275 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 2087 SizeOfPredicates, 21 NumberOfNonLiveVariables, 788 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 245/274 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! [2021-11-19 14:58:29,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_434666f3-90a8-4187-98b4-b8efb7af865b/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE