./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF --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 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:44,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:44,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:44,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:44,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:44,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:44,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:44,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:44,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:44,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:44,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:44,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:44,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:44,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:44,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:44,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:44,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:44,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:44,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:44,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:44,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:44,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:44,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:44,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:44,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:44,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:44,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:44,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:44,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:44,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:44,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:44,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:44,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:44,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:44,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:44,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:44,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:44,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:44,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:44,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:44,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:44,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:53:45,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:45,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:45,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:45,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:45,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:45,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:45,033 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:45,033 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:53:45,036 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:45,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:45,037 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:53:45,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:53:45,037 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:45,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:53:45,038 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:53:45,038 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:53:45,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:45,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:53:45,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:45,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:45,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:45,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:45,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:45,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:45,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:45,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:45,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:45,041 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:53:45,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:53:45,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:45,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:45,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:45,041 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_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2021-11-12 23:53:45,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:45,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:45,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:45,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:45,317 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:45,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-12 23:53:45,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/27242a9a8/cf2dc079a987454d9b940e4532b8c1d4/FLAGf1043767b [2021-11-12 23:53:45,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:45,925 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-12 23:53:45,950 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/27242a9a8/cf2dc079a987454d9b940e4532b8c1d4/FLAGf1043767b [2021-11-12 23:53:46,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/27242a9a8/cf2dc079a987454d9b940e4532b8c1d4 [2021-11-12 23:53:46,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:46,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:46,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:46,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:46,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:46,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:46" (1/1) ... [2021-11-12 23:53:46,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117db3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:46, skipping insertion in model container [2021-11-12 23:53:46,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:46" (1/1) ... [2021-11-12 23:53:46,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:46,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:46,599 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-12 23:53:46,603 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-12 23:53:46,604 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-12 23:53:46,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:46,624 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) [2021-11-12 23:53:46,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@82cd930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:46, skipping insertion in model container [2021-11-12 23:53:46,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:46,625 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:53:46,627 INFO L158 Benchmark]: Toolchain (without parser) took 455.75ms. Allocated memory is still 98.6MB. Free memory was 54.4MB in the beginning and 67.3MB in the end (delta: -12.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-12 23:53:46,627 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:53:46,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.20ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 67.3MB in the end (delta: -13.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2021-11-12 23:53:46,630 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 98.6MB. Free memory is still 72.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.20ms. Allocated memory is still 98.6MB. Free memory was 54.2MB in the beginning and 67.3MB in the end (delta: -13.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 642]: 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_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF --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 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:48,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:48,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:48,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:48,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:48,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:48,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:48,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:48,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:48,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:48,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:48,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:48,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:48,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:48,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:48,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:48,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:48,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:48,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:48,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:48,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:48,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:48,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:48,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:48,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:48,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:48,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:48,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:48,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:48,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:48,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:48,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:48,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:48,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:48,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:48,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:48,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:48,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:48,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:48,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:48,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:48,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:53:48,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:48,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:49,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:49,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:49,000 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:49,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:49,001 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:49,001 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:49,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:49,001 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:49,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:49,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:53:49,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:53:49,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:49,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:49,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:49,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:49,005 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:49,005 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:53:49,006 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:53:49,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:53:49,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:49,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:49,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:49,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:49,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:53:49,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:49,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:49,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:49,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:49,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:49,009 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:53:49,009 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:53:49,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:49,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:49,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:49,010 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_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10aecdd717bb6691571ad1da0b912f030832fb85361f767ea82293acfe046216 [2021-11-12 23:53:49,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:49,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:49,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:49,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:49,385 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:49,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-12 23:53:49,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/df44055d1/930fc62a2e014351ae0a70867763c5ba/FLAG181acb5a3 [2021-11-12 23:53:50,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:53:50,068 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2021-11-12 23:53:50,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/df44055d1/930fc62a2e014351ae0a70867763c5ba/FLAG181acb5a3 [2021-11-12 23:53:50,343 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/data/df44055d1/930fc62a2e014351ae0a70867763c5ba [2021-11-12 23:53:50,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:53:50,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:53:50,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:50,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:53:50,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:53:50,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:50" (1/1) ... [2021-11-12 23:53:50,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f6b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:50, skipping insertion in model container [2021-11-12 23:53:50,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:53:50" (1/1) ... [2021-11-12 23:53:50,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:53:50,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:50,858 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-12 23:53:50,865 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-12 23:53:50,868 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-12 23:53:50,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:50,904 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:53:50,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:53:50,972 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-12 23:53:50,977 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-12 23:53:50,978 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-12 23:53:51,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:51,004 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:53:51,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2021-11-12 23:53:51,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2021-11-12 23:53:51,070 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2021-11-12 23:53:51,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:53:51,139 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:53:51,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51 WrapperNode [2021-11-12 23:53:51,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:53:51,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:51,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:53:51,141 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:53:51,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:53:51,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:53:51,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:53:51,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:53:51,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:53:51,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:53:51,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:53:51,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:53:51,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (1/1) ... [2021-11-12 23:53:51,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:51,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:53:51,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:53:51,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:53:51,378 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-12 23:53:51,378 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-12 23:53:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-12 23:53:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-12 23:53:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:53:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:53:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:53:51,379 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2021-11-12 23:53:51,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2021-11-12 23:53:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:53:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:53:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:53:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:53:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2021-11-12 23:53:51,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2021-11-12 23:53:51,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:53:51,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:53:52,071 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:53:52,072 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 23:53:52,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:53:52 BoogieIcfgContainer [2021-11-12 23:53:52,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:53:52,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:53:52,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:53:52,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:53:52,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:53:50" (1/3) ... [2021-11-12 23:53:52,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c415ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:53:52, skipping insertion in model container [2021-11-12 23:53:52,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:53:51" (2/3) ... [2021-11-12 23:53:52,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c415ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:53:52, skipping insertion in model container [2021-11-12 23:53:52,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:53:52" (3/3) ... [2021-11-12 23:53:52,081 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2021-11-12 23:53:52,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:53:52,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:53:52,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:53:52,144 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 [2021-11-12 23:53:52,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:53:52,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 57 states have internal predecessors, (73), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:53:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:53:52,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:52,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:52,168 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1327890037, now seen corresponding path program 1 times [2021-11-12 23:53:52,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:52,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010399825] [2021-11-12 23:53:52,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:52,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:52,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:52,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:52,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:53:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:53:52,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:52,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:52,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:52,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010399825] [2021-11-12 23:53:52,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010399825] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:52,410 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:52,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:53:52,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69397359] [2021-11-12 23:53:52,413 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:52,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:53:52,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:52,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:53:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:53:52,445 INFO L87 Difference]: Start difference. First operand has 69 states, 53 states have (on average 1.3773584905660377) internal successors, (73), 57 states have internal predecessors, (73), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:53:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:52,471 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2021-11-12 23:53:52,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:53:52,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-12 23:53:52,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:52,480 INFO L225 Difference]: With dead ends: 135 [2021-11-12 23:53:52,480 INFO L226 Difference]: Without dead ends: 64 [2021-11-12 23:53:52,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:53:52,487 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:52,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:53:52,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-12 23:53:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-12 23:53:52,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 52 states have internal predecessors, (59), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:53:52,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-11-12 23:53:52,533 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 14 [2021-11-12 23:53:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:52,533 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-11-12 23:53:52,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:53:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-11-12 23:53:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:53:52,536 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:52,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:52,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:52,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:52,749 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1673478796, now seen corresponding path program 1 times [2021-11-12 23:53:52,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:52,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691188518] [2021-11-12 23:53:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:52,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:52,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:52,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:52,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:53:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:52,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:53:52,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:53,100 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 17 treesize of output 9 [2021-11-12 23:53:53,108 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 15 treesize of output 7 [2021-11-12 23:53:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:53,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:53,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:53,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691188518] [2021-11-12 23:53:53,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691188518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:53,281 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:53,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2021-11-12 23:53:53,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626849155] [2021-11-12 23:53:53,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:53,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:53:53,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:53,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:53:53,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:53:53,292 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:53:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:53,804 INFO L93 Difference]: Finished difference Result 141 states and 164 transitions. [2021-11-12 23:53:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:53:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-12 23:53:53,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:53,808 INFO L225 Difference]: With dead ends: 141 [2021-11-12 23:53:53,808 INFO L226 Difference]: Without dead ends: 86 [2021-11-12 23:53:53,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:53:53,810 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 46 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 408.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 451.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:53,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 239 Invalid, 72 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 451.00ms Time] [2021-11-12 23:53:53,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-12 23:53:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2021-11-12 23:53:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 62 states have internal predecessors, (69), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 23:53:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-11-12 23:53:53,834 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 14 [2021-11-12 23:53:53,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:53,835 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-11-12 23:53:53,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:53:53,835 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-11-12 23:53:53,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 23:53:53,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:53,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:53:53,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:54,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:54,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:54,053 INFO L85 PathProgramCache]: Analyzing trace with hash 642646269, now seen corresponding path program 1 times [2021-11-12 23:53:54,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:54,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398181428] [2021-11-12 23:53:54,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:54,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:54,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:54,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:54,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:53:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:54,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 23:53:54,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:54,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:54,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:53:54,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:54,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398181428] [2021-11-12 23:53:54,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398181428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:54,500 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:54,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:53:54,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831841881] [2021-11-12 23:53:54,502 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:54,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:53:54,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:53:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:53:54,504 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:54,830 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2021-11-12 23:53:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:53:54,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-12 23:53:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:54,833 INFO L225 Difference]: With dead ends: 86 [2021-11-12 23:53:54,833 INFO L226 Difference]: Without dead ends: 76 [2021-11-12 23:53:54,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:53:54,834 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 217.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.32ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:54,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 340 Invalid, 46 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 251.32ms Time] [2021-11-12 23:53:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-12 23:53:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 71. [2021-11-12 23:53:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 58 states have internal predecessors, (64), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-12 23:53:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2021-11-12 23:53:54,845 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 13 [2021-11-12 23:53:54,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:54,846 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2021-11-12 23:53:54,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:53:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2021-11-12 23:53:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 23:53:54,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:54,848 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:53:54,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:55,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:55,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:55,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1591297434, now seen corresponding path program 1 times [2021-11-12 23:53:55,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:55,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236916174] [2021-11-12 23:53:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:55,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:55,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:55,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:53:55,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:53:55,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:53:55,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:53:55,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:53:55,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:53:55,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236916174] [2021-11-12 23:53:55,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236916174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:53:55,373 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:53:55,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:53:55,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166278096] [2021-11-12 23:53:55,374 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:53:55,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:53:55,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:53:55,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:53:55,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:53:55,375 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:53:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:53:55,389 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2021-11-12 23:53:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:53:55,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2021-11-12 23:53:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:53:55,391 INFO L225 Difference]: With dead ends: 76 [2021-11-12 23:53:55,391 INFO L226 Difference]: Without dead ends: 74 [2021-11-12 23:53:55,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:53:55,392 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:53:55,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 6 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 6.55ms Time] [2021-11-12 23:53:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-12 23:53:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-12 23:53:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 60 states have internal predecessors, (66), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2021-11-12 23:53:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2021-11-12 23:53:55,404 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 32 [2021-11-12 23:53:55,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:53:55,407 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2021-11-12 23:53:55,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:53:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2021-11-12 23:53:55,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 23:53:55,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:53:55,410 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:53:55,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:53:55,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:53:55,614 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:53:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:53:55,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1642091089, now seen corresponding path program 1 times [2021-11-12 23:53:55,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:53:55,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110067189] [2021-11-12 23:53:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:53:55,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:53:55,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:53:55,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:53:55,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:53:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:53:55,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-12 23:53:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:53:55,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 109 treesize of output 101 [2021-11-12 23:53:56,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2021-11-12 23:53:56,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-12 23:54:42,228 WARN L227 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 115 DAG size of output: 33 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:54:42,229 INFO L354 Elim1Store]: treesize reduction 478, result has 9.3 percent of original size [2021-11-12 23:54:42,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 159 [2021-11-12 23:54:53,503 WARN L227 SmtUtils]: Spent 11.25s on a formula simplification. DAG size of input: 91 DAG size of output: 41 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:54:53,505 INFO L354 Elim1Store]: treesize reduction 473, result has 19.7 percent of original size [2021-11-12 23:54:53,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 255 treesize of output 216 [2021-11-12 23:55:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:55:52,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:55:58,655 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v___ldv_list_add_~next.offset_13 (_ BitVec 32)) (v___ldv_list_add_~prev.offset_13 (_ BitVec 32)) (v___ldv_list_add_~new.offset_13 (_ BitVec 32))) (= |c_~#mutexes~0.offset| (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (store |c_#memory_$Pointer$.offset| .cse2 (store (select |c_#memory_$Pointer$.offset| .cse2) (bvadd (_ bv4 32) v___ldv_list_add_~next.offset_13) v___ldv_list_add_~new.offset_13))))) (store .cse1 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_13 v___ldv_list_add_~next.offset_13) (bvadd v___ldv_list_add_~new.offset_13 (_ bv4 32)) v___ldv_list_add_~prev.offset_13))))) (store .cse0 |c_~#drvlist~0.base| (store (select .cse0 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_13 v___ldv_list_add_~new.offset_13))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|))) (forall ((v___ldv_list_add_~next.offset_13 (_ BitVec 32)) (v___ldv_list_add_~prev.offset_13 (_ BitVec 32)) (v___ldv_list_add_~new.offset_13 (_ BitVec 32))) (= (select (select (let ((.cse3 (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_~#drvlist~0.base|) |c_~#drvlist~0.offset|))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse5 (store (select |c_#memory_$Pointer$.base| .cse5) (bvadd (_ bv4 32) v___ldv_list_add_~next.offset_13) |c_ULTIMATE.start_foo_~me~0#1.base|)))) (store .cse4 |c_ULTIMATE.start_foo_~me~0#1.base| (store (store (select .cse4 |c_ULTIMATE.start_foo_~me~0#1.base|) v___ldv_list_add_~new.offset_13 .cse5) (bvadd v___ldv_list_add_~new.offset_13 (_ bv4 32)) |c_~#drvlist~0.base|)))))) (store .cse3 |c_~#drvlist~0.base| (store (select .cse3 |c_~#drvlist~0.base|) v___ldv_list_add_~prev.offset_13 |c_ULTIMATE.start_foo_~me~0#1.base|))) |c_~#mutexes~0.base|) |c_~#mutexes~0.offset|) |c_~#mutexes~0.base|))) is different from false [2021-11-12 23:56:09,719 WARN L227 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:56:43,768 WARN L227 SmtUtils]: Spent 21.75s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:56:43,987 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:56:43,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15113 treesize of output 12788 [2021-11-12 23:56:44,734 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 14120 treesize of output 14104 [2021-11-12 23:56:49,722 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:56:49,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110067189] [2021-11-12 23:56:49,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-12 23:56:49,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [422529024] [2021-11-12 23:56:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:56:49,723 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:56:49,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:56:49,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:56:49,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be577b31-eab0-46f5-b4c4-5e18973bcf8c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-12 23:56:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:56:49,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-12 23:56:49,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:56:49,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 192 treesize of output 176 [2021-11-12 23:57:09,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-12 23:57:09,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-12 23:58:06,989 INFO L354 Elim1Store]: treesize reduction 474, result has 9.4 percent of original size [2021-11-12 23:58:06,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 265 treesize of output 166 [2021-11-12 23:58:17,548 WARN L227 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 106 DAG size of output: 49 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-12 23:58:17,549 INFO L354 Elim1Store]: treesize reduction 555, result has 21.1 percent of original size [2021-11-12 23:58:17,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 250 treesize of output 259