./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0134.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0134.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:29:42,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:29:42,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:29:42,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:29:42,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:29:42,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:29:42,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:29:42,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:29:42,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:29:42,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:29:42,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:29:42,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:29:42,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:29:42,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:29:42,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:29:42,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:29:42,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:29:42,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:29:42,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:29:42,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:29:42,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:29:42,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:29:42,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:29:42,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:29:42,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:29:42,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:29:42,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:29:42,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:29:42,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:29:42,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:29:42,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:29:42,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:29:42,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:29:42,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:29:42,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:29:42,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:29:42,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:29:42,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:29:42,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:29:42,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:29:42,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:29:42,873 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 06:29:42,915 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:29:42,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:29:42,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:29:42,923 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:29:42,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:29:42,924 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:29:42,924 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:29:42,924 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:29:42,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:29:42,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:29:42,926 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:29:42,926 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:29:42,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:29:42,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:29:42,927 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:29:42,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 06:29:42,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 06:29:42,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:29:42,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:29:42,928 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 06:29:42,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:29:42,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:29:42,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:29:42,929 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 06:29:42,929 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 06:29:42,930 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 06:29:42,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:29:42,931 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:29:42,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:29:42,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:29:42,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:29:42,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:29:42,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:29:42,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:29:42,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:29:42,933 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:29:42,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:29:42,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:29:42,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:29:42,934 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_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-10-20 06:29:43,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:29:43,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:29:43,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:29:43,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:29:43,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:29:43,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/memsafety/test-0134.i [2021-10-20 06:29:43,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/817bf8e1d/b8849e687c2144258fd789149e6fc129/FLAG8e747fd6e [2021-10-20 06:29:43,916 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:29:43,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/sv-benchmarks/c/memsafety/test-0134.i [2021-10-20 06:29:43,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/817bf8e1d/b8849e687c2144258fd789149e6fc129/FLAG8e747fd6e [2021-10-20 06:29:44,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/817bf8e1d/b8849e687c2144258fd789149e6fc129 [2021-10-20 06:29:44,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:29:44,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:29:44,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:29:44,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:29:44,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:29:44,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:44" (1/1) ... [2021-10-20 06:29:44,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5048a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:44, skipping insertion in model container [2021-10-20 06:29:44,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:44" (1/1) ... [2021-10-20 06:29:44,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:29:44,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:29:44,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:29:44,670 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) [2021-10-20 06:29:44,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@762ff17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:44, skipping insertion in model container [2021-10-20 06:29:44,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:29:44,672 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 06:29:44,674 INFO L168 Benchmark]: Toolchain (without parser) took 478.30 ms. Allocated memory is still 134.2 MB. Free memory was 95.5 MB in the beginning and 106.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:29:44,675 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 134.2 MB. Free memory is still 113.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:29:44,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.61 ms. Allocated memory is still 134.2 MB. Free memory was 95.3 MB in the beginning and 106.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:29:44,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 134.2 MB. Free memory is still 113.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 475.61 ms. Allocated memory is still 134.2 MB. Free memory was 95.3 MB in the beginning and 106.8 MB in the end (delta: -11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 585]: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:29:46,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:29:46,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:29:46,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:29:46,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:29:46,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:29:46,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:29:46,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:29:46,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:29:46,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:29:46,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:29:46,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:29:46,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:29:46,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:29:46,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:29:46,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:29:46,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:29:46,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:29:46,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:29:46,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:29:46,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:29:46,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:29:46,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:29:46,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:29:46,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:29:46,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:29:46,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:29:46,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:29:46,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:29:46,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:29:46,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:29:46,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:29:46,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:29:46,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:29:46,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:29:46,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:29:46,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:29:46,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:29:46,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:29:46,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:29:46,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:29:46,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-20 06:29:46,995 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:29:46,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:29:46,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:29:46,997 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:29:46,997 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:29:46,997 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:29:46,998 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:29:46,998 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:29:46,998 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:29:46,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 06:29:47,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 06:29:47,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:29:47,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:29:47,001 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 06:29:47,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:29:47,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:29:47,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:29:47,002 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 06:29:47,002 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 06:29:47,002 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 06:29:47,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:29:47,003 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:29:47,003 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 06:29:47,003 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 06:29:47,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:29:47,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:29:47,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:29:47,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 06:29:47,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:29:47,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:29:47,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:29:47,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:29:47,005 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 06:29:47,006 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 06:29:47,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:29:47,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:29:47,006 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_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 554aa7448188134a862651a68c0992659f18748881f2b6912b6dbf17d440798c [2021-10-20 06:29:47,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:29:47,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:29:47,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:29:47,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:29:47,435 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:29:47,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/memsafety/test-0134.i [2021-10-20 06:29:47,517 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/2c312788c/2cb30600feed4d66a8aaa86e45fc7dd1/FLAG4fe860bc6 [2021-10-20 06:29:48,218 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:29:48,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/sv-benchmarks/c/memsafety/test-0134.i [2021-10-20 06:29:48,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/2c312788c/2cb30600feed4d66a8aaa86e45fc7dd1/FLAG4fe860bc6 [2021-10-20 06:29:48,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/data/2c312788c/2cb30600feed4d66a8aaa86e45fc7dd1 [2021-10-20 06:29:48,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:29:48,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:29:48,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:29:48,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:29:48,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:29:48,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:48" (1/1) ... [2021-10-20 06:29:48,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a06ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:48, skipping insertion in model container [2021-10-20 06:29:48,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:29:48" (1/1) ... [2021-10-20 06:29:48,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:29:48,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:29:49,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:29:49,032 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 06:29:49,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:29:49,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:29:49,130 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:29:49,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:29:49,236 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:29:49,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49 WrapperNode [2021-10-20 06:29:49,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:29:49,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:29:49,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:29:49,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:29:49,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:29:49,297 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:29:49,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:29:49,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:29:49,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:29:49,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:29:49,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:29:49,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:29:49,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (1/1) ... [2021-10-20 06:29:49,363 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:29:49,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:29:49,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:29:49,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:29:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-20 06:29:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 06:29:49,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 06:29:49,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:29:49,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:29:50,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:29:50,537 INFO L299 CfgBuilder]: Removed 46 assume(true) statements. [2021-10-20 06:29:50,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:50 BoogieIcfgContainer [2021-10-20 06:29:50,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:29:50,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:29:50,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:29:50,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:29:50,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:29:48" (1/3) ... [2021-10-20 06:29:50,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ce02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:29:50, skipping insertion in model container [2021-10-20 06:29:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:29:49" (2/3) ... [2021-10-20 06:29:50,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ce02d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:29:50, skipping insertion in model container [2021-10-20 06:29:50,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:50" (3/3) ... [2021-10-20 06:29:50,548 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0134.i [2021-10-20 06:29:50,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:29:50,553 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2021-10-20 06:29:50,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:29:50,603 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:29:50,603 INFO L340 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2021-10-20 06:29:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 162 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:29:50,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:29:50,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:29:50,627 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:29:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:29:50,632 INFO L82 PathProgramCache]: Analyzing trace with hash 28694792, now seen corresponding path program 1 times [2021-10-20 06:29:50,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:29:50,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944513639] [2021-10-20 06:29:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:29:50,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:29:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:29:50,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:29:50,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 06:29:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:29:50,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 06:29:50,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:29:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:50,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:29:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:50,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:29:50,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944513639] [2021-10-20 06:29:50,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944513639] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:29:50,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:29:50,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 06:29:50,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700332] [2021-10-20 06:29:50,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 06:29:50,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:29:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 06:29:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:29:50,845 INFO L87 Difference]: Start difference. First operand has 163 states, 86 states have (on average 2.0232558139534884) internal successors, (174), 162 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:29:50,891 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2021-10-20 06:29:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 06:29:50,893 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-20 06:29:50,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:29:50,902 INFO L225 Difference]: With dead ends: 163 [2021-10-20 06:29:50,918 INFO L226 Difference]: Without dead ends: 161 [2021-10-20 06:29:50,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:29:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-20 06:29:50,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-10-20 06:29:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 85 states have (on average 1.964705882352941) internal successors, (167), 160 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2021-10-20 06:29:50,998 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 5 [2021-10-20 06:29:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:29:50,999 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2021-10-20 06:29:50,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2021-10-20 06:29:51,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:29:51,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:29:51,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:29:51,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:29:51,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:29:51,213 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:29:51,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:29:51,214 INFO L82 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2021-10-20 06:29:51,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:29:51,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819215358] [2021-10-20 06:29:51,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:29:51,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:29:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:29:51,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:29:51,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 06:29:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:29:51,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 06:29:51,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:29:51,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-20 06:29:51,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:51,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:29:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:51,450 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:29:51,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819215358] [2021-10-20 06:29:51,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819215358] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:29:51,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:29:51,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 06:29:51,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799418690] [2021-10-20 06:29:51,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:29:51,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:29:51,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:29:51,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:29:51,460 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:29:51,744 INFO L93 Difference]: Finished difference Result 183 states and 189 transitions. [2021-10-20 06:29:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:29:51,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-20 06:29:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:29:51,748 INFO L225 Difference]: With dead ends: 183 [2021-10-20 06:29:51,748 INFO L226 Difference]: Without dead ends: 183 [2021-10-20 06:29:51,749 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:29:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-10-20 06:29:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 160. [2021-10-20 06:29:51,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 85 states have (on average 1.9529411764705882) internal successors, (166), 159 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2021-10-20 06:29:51,765 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 5 [2021-10-20 06:29:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:29:51,766 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2021-10-20 06:29:51,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2021-10-20 06:29:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:29:51,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:29:51,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:29:51,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:29:51,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:29:51,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:29:51,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:29:51,979 INFO L82 PathProgramCache]: Analyzing trace with hash 28694855, now seen corresponding path program 1 times [2021-10-20 06:29:51,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:29:51,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257700807] [2021-10-20 06:29:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:29:51,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:29:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:29:51,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:29:51,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 06:29:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:29:52,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 06:29:52,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:29:52,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-20 06:29:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:52,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:29:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:52,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:29:52,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257700807] [2021-10-20 06:29:52,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257700807] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:29:52,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:29:52,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-20 06:29:52,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478202758] [2021-10-20 06:29:52,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:29:52,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:29:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:29:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:29:52,159 INFO L87 Difference]: Start difference. First operand 160 states and 166 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:29:52,764 INFO L93 Difference]: Finished difference Result 182 states and 188 transitions. [2021-10-20 06:29:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:29:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 06:29:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:29:52,767 INFO L225 Difference]: With dead ends: 182 [2021-10-20 06:29:52,767 INFO L226 Difference]: Without dead ends: 182 [2021-10-20 06:29:52,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:29:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-20 06:29:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 159. [2021-10-20 06:29:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 85 states have (on average 1.9411764705882353) internal successors, (165), 158 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 165 transitions. [2021-10-20 06:29:52,779 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 165 transitions. Word has length 5 [2021-10-20 06:29:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:29:52,780 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 165 transitions. [2021-10-20 06:29:52,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:52,780 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 165 transitions. [2021-10-20 06:29:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 06:29:52,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:29:52,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:29:52,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:29:52,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:29:52,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:29:52,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:29:52,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1805950471, now seen corresponding path program 1 times [2021-10-20 06:29:52,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:29:52,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490494735] [2021-10-20 06:29:52,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:29:52,999 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:29:52,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:29:53,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:29:53,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 06:29:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:29:53,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:29:53,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:29:53,190 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-20 06:29:53,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-20 06:29:53,476 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-20 06:29:53,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-20 06:29:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:53,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:29:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:55,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:29:55,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490494735] [2021-10-20 06:29:55,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490494735] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:29:55,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:29:55,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-20 06:29:55,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299693296] [2021-10-20 06:29:55,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 06:29:55,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:29:55,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 06:29:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-10-20 06:29:55,824 INFO L87 Difference]: Start difference. First operand 159 states and 165 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:29:56,468 INFO L93 Difference]: Finished difference Result 180 states and 186 transitions. [2021-10-20 06:29:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:29:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 06:29:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:29:56,470 INFO L225 Difference]: With dead ends: 180 [2021-10-20 06:29:56,470 INFO L226 Difference]: Without dead ends: 180 [2021-10-20 06:29:56,471 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2179.9ms TimeCoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2021-10-20 06:29:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-20 06:29:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 158. [2021-10-20 06:29:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 87 states have (on average 1.896551724137931) internal successors, (165), 157 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 165 transitions. [2021-10-20 06:29:56,481 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 165 transitions. Word has length 7 [2021-10-20 06:29:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:29:56,490 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 165 transitions. [2021-10-20 06:29:56,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:29:56,491 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 165 transitions. [2021-10-20 06:29:56,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-20 06:29:56,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:29:56,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:29:56,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 06:29:56,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:29:56,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:29:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:29:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1805950472, now seen corresponding path program 1 times [2021-10-20 06:29:56,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:29:56,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150890155] [2021-10-20 06:29:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:29:56,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:29:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:29:56,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:29:56,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 06:29:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:29:56,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 06:29:56,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:29:56,883 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-20 06:29:56,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 42 [2021-10-20 06:29:56,974 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-20 06:29:56,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 63 [2021-10-20 06:29:57,267 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-20 06:29:57,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 44 treesize of output 51 [2021-10-20 06:29:57,308 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-20 06:29:57,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 64 [2021-10-20 06:29:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:29:58,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:30:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:30:00,493 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:30:00,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150890155] [2021-10-20 06:30:00,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150890155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:30:00,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:30:00,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-20 06:30:00,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835304429] [2021-10-20 06:30:00,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 06:30:00,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:30:00,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 06:30:00,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2021-10-20 06:30:00,495 INFO L87 Difference]: Start difference. First operand 158 states and 165 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:30:06,816 INFO L93 Difference]: Finished difference Result 194 states and 200 transitions. [2021-10-20 06:30:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-20 06:30:06,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-20 06:30:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:30:06,818 INFO L225 Difference]: With dead ends: 194 [2021-10-20 06:30:06,819 INFO L226 Difference]: Without dead ends: 194 [2021-10-20 06:30:06,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 6884.6ms TimeCoverageRelationStatistics Valid=76, Invalid=133, Unknown=1, NotChecked=0, Total=210 [2021-10-20 06:30:06,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-20 06:30:06,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 154. [2021-10-20 06:30:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 87 states have (on average 1.839080459770115) internal successors, (160), 153 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 160 transitions. [2021-10-20 06:30:06,827 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 160 transitions. Word has length 7 [2021-10-20 06:30:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:30:06,827 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 160 transitions. [2021-10-20 06:30:06,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 160 transitions. [2021-10-20 06:30:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:30:06,828 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:30:06,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:30:06,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 06:30:07,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:30:07,040 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:30:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:30:07,041 INFO L82 PathProgramCache]: Analyzing trace with hash 351614728, now seen corresponding path program 1 times [2021-10-20 06:30:07,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:30:07,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245382554] [2021-10-20 06:30:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:30:07,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:30:07,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:30:07,043 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:30:07,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 06:30:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:30:07,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-20 06:30:07,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:30:07,313 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-20 06:30:07,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 37 [2021-10-20 06:30:07,582 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-20 06:30:07,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 14 [2021-10-20 06:30:07,688 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-20 06:30:07,689 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 60 treesize of output 15 [2021-10-20 06:30:07,737 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 23 treesize of output 15 [2021-10-20 06:30:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:30:07,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:30:07,837 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-10-20 06:30:07,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 25 [2021-10-20 06:30:07,870 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:30:07,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-20 06:30:14,372 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_13 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_13))) (forall ((v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32))) (= |c_~#gl_list~0.base| (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_13 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_13) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_1) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_2) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_3) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_4)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) is different from false [2021-10-20 06:30:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:30:14,414 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:30:14,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245382554] [2021-10-20 06:30:14,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245382554] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:30:14,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:30:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-20 06:30:14,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123475808] [2021-10-20 06:30:14,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 06:30:14,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:30:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 06:30:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=53, Unknown=2, NotChecked=14, Total=90 [2021-10-20 06:30:14,417 INFO L87 Difference]: Start difference. First operand 154 states and 160 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:30:15,452 INFO L93 Difference]: Finished difference Result 188 states and 194 transitions. [2021-10-20 06:30:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 06:30:15,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 06:30:15,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:30:15,454 INFO L225 Difference]: With dead ends: 188 [2021-10-20 06:30:15,454 INFO L226 Difference]: Without dead ends: 188 [2021-10-20 06:30:15,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6658.3ms TimeCoverageRelationStatistics Valid=62, Invalid=122, Unknown=2, NotChecked=24, Total=210 [2021-10-20 06:30:15,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-20 06:30:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 161. [2021-10-20 06:30:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 94 states have (on average 1.7872340425531914) internal successors, (168), 160 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 168 transitions. [2021-10-20 06:30:15,461 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 168 transitions. Word has length 9 [2021-10-20 06:30:15,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:30:15,462 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 168 transitions. [2021-10-20 06:30:15,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 168 transitions. [2021-10-20 06:30:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 06:30:15,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:30:15,463 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:30:15,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 06:30:15,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:30:15,675 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:30:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:30:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash 351614729, now seen corresponding path program 1 times [2021-10-20 06:30:15,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:30:15,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371345501] [2021-10-20 06:30:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:30:15,677 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:30:15,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:30:15,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:30:15,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 06:30:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:30:15,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-20 06:30:15,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:30:15,993 INFO L354 Elim1Store]: treesize reduction 77, result has 29.4 percent of original size [2021-10-20 06:30:15,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 49 [2021-10-20 06:30:16,068 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-10-20 06:30:16,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 63 [2021-10-20 06:30:16,430 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-20 06:30:16,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 48 treesize of output 55 [2021-10-20 06:30:16,485 INFO L354 Elim1Store]: treesize reduction 2, result has 92.0 percent of original size [2021-10-20 06:30:16,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 68 [2021-10-20 06:30:17,419 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-20 06:30:17,419 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 116 treesize of output 71 [2021-10-20 06:30:17,501 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-20 06:30:17,502 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 68 treesize of output 23 [2021-10-20 06:30:17,671 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 34 treesize of output 26 [2021-10-20 06:30:17,678 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 20 treesize of output 12 [2021-10-20 06:30:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:30:17,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:30:18,250 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:30:18,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 186 [2021-10-20 06:30:18,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:30:18,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 288 [2021-10-20 06:30:32,524 WARN L207 SmtUtils]: Spent 7.50 s on a formula simplification that was a NOOP. DAG size: 47 [2021-10-20 06:30:34,717 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_14))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32))) (.cse2 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_11) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32)))))))) is different from false [2021-10-20 06:30:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:30:34,926 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:30:34,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371345501] [2021-10-20 06:30:34,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371345501] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:30:34,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:30:34,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-20 06:30:34,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103300458] [2021-10-20 06:30:34,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-20 06:30:34,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:30:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-20 06:30:34,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=125, Unknown=1, NotChecked=22, Total=182 [2021-10-20 06:30:34,929 INFO L87 Difference]: Start difference. First operand 161 states and 168 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:30:37,035 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_14))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32))) (.cse2 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_11) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32)))))))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (exists ((ULTIMATE.start_gl_insert_~node~0.base (_ BitVec 32))) (= (select |c_#length| ULTIMATE.start_gl_insert_~node~0.base) (_ bv12 32))) (= (_ bv8 32) (select |c_#length| |c_~#gl_list~0.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| |c_~#gl_list~0.base|)))) (let ((.cse4 (select |c_#length| (_ bv0 32)))) (or (= (_ bv12 32) .cse4) (= |c_~#gl_list~0.base| (_ bv0 32)) (= (_ bv2 32) .cse4) (= (_ bv0 1) (select |c_#valid| (_ bv0 32)))))) is different from false [2021-10-20 06:30:39,094 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#gl_list~0.base| (select (select |c_#memory_$Pointer$.base| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)) (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_14))) (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (let ((.cse0 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32))) (.cse1 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32))) (.cse2 (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) .cse0 v_DerPreprocessor_10) .cse1 v_DerPreprocessor_11) .cse2 v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) (_ bv8 32)) (select (store |c_#length| v_ULTIMATE.start_gl_insert_~node~0.base_14 (_ bv12 32)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_5) .cse0 v_DerPreprocessor_6) .cse1 v_DerPreprocessor_7) .cse2 v_DerPreprocessor_8)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))) (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14 (store (store (store (store (select |c_#memory_$Pointer$.offset| v_ULTIMATE.start_gl_insert_~node~0.base_14) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_9) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_10) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_11) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_12)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32)))))))) (= (select (select |c_#memory_$Pointer$.offset| |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|) |c_~#gl_list~0.offset|) (= |c_~#gl_list~0.offset| (_ bv0 32)) (= (_ bv8 32) (select |c_#length| |c_~#gl_list~0.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| |c_~#gl_list~0.base|)))) (let ((.cse4 (select |c_#length| (_ bv0 32)))) (or (= (_ bv12 32) .cse4) (= |c_~#gl_list~0.base| (_ bv0 32)) (= (_ bv2 32) .cse4) (= (_ bv0 1) (select |c_#valid| (_ bv0 32)))))) is different from false [2021-10-20 06:31:00,869 WARN L207 SmtUtils]: Spent 18.55 s on a formula simplification that was a NOOP. DAG size: 73 [2021-10-20 06:31:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:19,039 INFO L93 Difference]: Finished difference Result 261 states and 273 transitions. [2021-10-20 06:31:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-20 06:31:19,040 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 06:31:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:19,041 INFO L225 Difference]: With dead ends: 261 [2021-10-20 06:31:19,041 INFO L226 Difference]: Without dead ends: 261 [2021-10-20 06:31:19,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 42179.5ms TimeCoverageRelationStatistics Valid=89, Invalid=225, Unknown=4, NotChecked=102, Total=420 [2021-10-20 06:31:19,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-20 06:31:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 161. [2021-10-20 06:31:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 94 states have (on average 1.7765957446808511) internal successors, (167), 160 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 167 transitions. [2021-10-20 06:31:19,048 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 167 transitions. Word has length 9 [2021-10-20 06:31:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:19,049 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 167 transitions. [2021-10-20 06:31:19,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 167 transitions. [2021-10-20 06:31:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 06:31:19,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:19,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:19,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-20 06:31:19,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:19,261 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:19,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:19,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1984845326, now seen corresponding path program 1 times [2021-10-20 06:31:19,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:19,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553072234] [2021-10-20 06:31:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:19,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:19,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:19,263 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:19,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-20 06:31:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:19,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:31:19,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:19,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-20 06:31:19,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:19,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:19,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:19,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553072234] [2021-10-20 06:31:19,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553072234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:31:19,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:31:19,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 06:31:19,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404374036] [2021-10-20 06:31:19,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:31:19,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:31:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:31:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:31:19,532 INFO L87 Difference]: Start difference. First operand 161 states and 167 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:20,200 INFO L93 Difference]: Finished difference Result 220 states and 230 transitions. [2021-10-20 06:31:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:31:20,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-20 06:31:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:20,202 INFO L225 Difference]: With dead ends: 220 [2021-10-20 06:31:20,202 INFO L226 Difference]: Without dead ends: 220 [2021-10-20 06:31:20,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:31:20,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-20 06:31:20,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 157. [2021-10-20 06:31:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 156 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 163 transitions. [2021-10-20 06:31:20,207 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 163 transitions. Word has length 10 [2021-10-20 06:31:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:20,208 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 163 transitions. [2021-10-20 06:31:20,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 163 transitions. [2021-10-20 06:31:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 06:31:20,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:20,208 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:20,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-20 06:31:20,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:20,409 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1984845325, now seen corresponding path program 1 times [2021-10-20 06:31:20,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:20,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647981858] [2021-10-20 06:31:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:20,410 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:20,411 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:20,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 06:31:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:20,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 06:31:20,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:20,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-20 06:31:20,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:20,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:20,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:20,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647981858] [2021-10-20 06:31:20,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647981858] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:31:20,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:31:20,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-20 06:31:20,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260466523] [2021-10-20 06:31:20,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 06:31:20,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:31:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 06:31:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:31:20,950 INFO L87 Difference]: Start difference. First operand 157 states and 163 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:23,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:23,076 INFO L93 Difference]: Finished difference Result 220 states and 230 transitions. [2021-10-20 06:31:23,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 06:31:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-20 06:31:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:23,078 INFO L225 Difference]: With dead ends: 220 [2021-10-20 06:31:23,079 INFO L226 Difference]: Without dead ends: 220 [2021-10-20 06:31:23,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 461.2ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-20 06:31:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-20 06:31:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 155. [2021-10-20 06:31:23,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 154 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 161 transitions. [2021-10-20 06:31:23,084 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 161 transitions. Word has length 10 [2021-10-20 06:31:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:23,084 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 161 transitions. [2021-10-20 06:31:23,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 161 transitions. [2021-10-20 06:31:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 06:31:23,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:23,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:23,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-20 06:31:23,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:23,290 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:23,290 INFO L82 PathProgramCache]: Analyzing trace with hash -470878954, now seen corresponding path program 1 times [2021-10-20 06:31:23,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:23,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004277803] [2021-10-20 06:31:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:23,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:23,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:23,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-20 06:31:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:23,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 06:31:23,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:23,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:23,781 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 8 treesize of output 6 [2021-10-20 06:31:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:23,916 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:23,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004277803] [2021-10-20 06:31:23,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004277803] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:31:23,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:31:23,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-20 06:31:23,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536761920] [2021-10-20 06:31:23,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 06:31:23,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:31:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 06:31:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-20 06:31:23,918 INFO L87 Difference]: Start difference. First operand 155 states and 161 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:25,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:25,170 INFO L93 Difference]: Finished difference Result 225 states and 235 transitions. [2021-10-20 06:31:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-20 06:31:25,171 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-20 06:31:25,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:25,172 INFO L225 Difference]: With dead ends: 225 [2021-10-20 06:31:25,173 INFO L226 Difference]: Without dead ends: 225 [2021-10-20 06:31:25,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 486.4ms TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-10-20 06:31:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-20 06:31:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 152. [2021-10-20 06:31:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 151 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 158 transitions. [2021-10-20 06:31:25,178 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 158 transitions. Word has length 12 [2021-10-20 06:31:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:25,178 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 158 transitions. [2021-10-20 06:31:25,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 158 transitions. [2021-10-20 06:31:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 06:31:25,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:25,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:25,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-20 06:31:25,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:25,386 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash -470878955, now seen corresponding path program 1 times [2021-10-20 06:31:25,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:25,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563326083] [2021-10-20 06:31:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:25,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:25,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:25,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:25,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-20 06:31:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:25,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:31:25,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:25,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:25,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:25,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563326083] [2021-10-20 06:31:25,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563326083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:31:25,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:31:25,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-20 06:31:25,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211544624] [2021-10-20 06:31:25,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:31:25,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:31:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:31:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:31:25,628 INFO L87 Difference]: Start difference. First operand 152 states and 158 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:25,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:25,984 INFO L93 Difference]: Finished difference Result 165 states and 171 transitions. [2021-10-20 06:31:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:31:25,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-10-20 06:31:25,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:25,986 INFO L225 Difference]: With dead ends: 165 [2021-10-20 06:31:25,986 INFO L226 Difference]: Without dead ends: 165 [2021-10-20 06:31:25,986 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:31:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-10-20 06:31:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 149. [2021-10-20 06:31:25,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 94 states have (on average 1.648936170212766) internal successors, (155), 148 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2021-10-20 06:31:25,990 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 12 [2021-10-20 06:31:25,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:25,991 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2021-10-20 06:31:25,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2021-10-20 06:31:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 06:31:25,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:25,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:26,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-20 06:31:26,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:26,201 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:26,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:26,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1741445100, now seen corresponding path program 1 times [2021-10-20 06:31:26,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:26,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528470058] [2021-10-20 06:31:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:26,202 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:26,202 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:26,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-20 06:31:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:26,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:31:26,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:26,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:26,522 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-20 06:31:26,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 17 [2021-10-20 06:31:26,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:26,539 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:26,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528470058] [2021-10-20 06:31:26,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528470058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:31:26,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:31:26,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-20 06:31:26,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041382903] [2021-10-20 06:31:26,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:31:26,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:31:26,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:31:26,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:31:26,541 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-20 06:31:27,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:27,155 INFO L93 Difference]: Finished difference Result 227 states and 237 transitions. [2021-10-20 06:31:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:31:27,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 17 [2021-10-20 06:31:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:27,157 INFO L225 Difference]: With dead ends: 227 [2021-10-20 06:31:27,157 INFO L226 Difference]: Without dead ends: 227 [2021-10-20 06:31:27,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:31:27,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-20 06:31:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 147. [2021-10-20 06:31:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.627659574468085) internal successors, (153), 146 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-10-20 06:31:27,163 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 17 [2021-10-20 06:31:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:27,163 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-10-20 06:31:27,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2021-10-20 06:31:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-10-20 06:31:27,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 06:31:27,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:27,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:27,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-20 06:31:27,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:27,373 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:27,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1741445099, now seen corresponding path program 1 times [2021-10-20 06:31:27,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:27,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501671191] [2021-10-20 06:31:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:27,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:27,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:27,374 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:27,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-20 06:31:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:27,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 06:31:27,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:27,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:27,989 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:31:27,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 22 treesize of output 26 [2021-10-20 06:31:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:28,181 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:28,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501671191] [2021-10-20 06:31:28,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501671191] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:31:28,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:31:28,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-20 06:31:28,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318084614] [2021-10-20 06:31:28,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 06:31:28,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:31:28,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 06:31:28,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-20 06:31:28,184 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:28,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:31:28,948 INFO L93 Difference]: Finished difference Result 208 states and 218 transitions. [2021-10-20 06:31:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:31:28,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 17 [2021-10-20 06:31:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:31:28,950 INFO L225 Difference]: With dead ends: 208 [2021-10-20 06:31:28,950 INFO L226 Difference]: Without dead ends: 208 [2021-10-20 06:31:28,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 278.4ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-10-20 06:31:28,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-20 06:31:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 145. [2021-10-20 06:31:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.6063829787234043) internal successors, (151), 144 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:28,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 151 transitions. [2021-10-20 06:31:28,954 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 151 transitions. Word has length 17 [2021-10-20 06:31:28,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:31:28,954 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 151 transitions. [2021-10-20 06:31:28,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:31:28,954 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 151 transitions. [2021-10-20 06:31:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 06:31:28,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:31:28,955 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:31:28,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-20 06:31:29,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:31:29,156 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 72 more)] === [2021-10-20 06:31:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:31:29,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1992274679, now seen corresponding path program 1 times [2021-10-20 06:31:29,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:31:29,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452083978] [2021-10-20 06:31:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:29,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:31:29,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:31:29,158 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:31:29,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-20 06:31:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:29,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-20 06:31:29,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:29,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-20 06:31:29,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-20 06:31:29,801 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-20 06:31:29,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 57 [2021-10-20 06:31:30,012 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-20 06:31:30,012 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 84 treesize of output 35 [2021-10-20 06:31:30,242 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 60 treesize of output 48 [2021-10-20 06:31:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:30,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:30,746 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:31:30,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-20 06:31:37,252 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_19 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_19)))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_19 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_19 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_19) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|)))))))))) (_ bv1 1))))) is different from false [2021-10-20 06:31:37,393 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 318385 treesize of output 317361 [2021-10-20 06:31:38,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:31:38,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452083978] [2021-10-20 06:31:38,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-20 06:31:38,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [739446973] [2021-10-20 06:31:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:38,512 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:31:38,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:31:38,514 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:31:38,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-10-20 06:31:38,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:38,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-20 06:31:38,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:38,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-20 06:31:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-20 06:31:39,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-20 06:31:39,761 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-10-20 06:31:39,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 26 treesize of output 37 [2021-10-20 06:31:40,136 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-20 06:31:40,136 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 87 treesize of output 38 [2021-10-20 06:31:40,487 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 46 treesize of output 34 [2021-10-20 06:31:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:41,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:41,346 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:31:41,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-20 06:31:43,379 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_20 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_gl_insert_~node~0.base (store (store (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_gl_insert_~node~0.base) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_17) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_18) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_19) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_20)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))) (_ bv1 1)))) is different from false [2021-10-20 06:31:43,957 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 640496 treesize of output 638448 [2021-10-20 06:31:45,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-20 06:31:45,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48929896] [2021-10-20 06:31:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:31:45,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:31:45,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:31:45,918 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:31:45,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-20 06:31:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:31:46,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-20 06:31:46,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:31:46,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-20 06:31:46,680 INFO L354 Elim1Store]: treesize reduction 54, result has 37.9 percent of original size [2021-10-20 06:31:46,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 59 [2021-10-20 06:31:46,874 INFO L354 Elim1Store]: treesize reduction 336, result has 2.0 percent of original size [2021-10-20 06:31:46,875 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 84 treesize of output 35 [2021-10-20 06:31:46,977 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 60 treesize of output 48 [2021-10-20 06:31:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:31:47,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:31:47,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:31:47,229 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-20 06:31:56,008 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_gl_insert_~node~0.base_21 (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (ULTIMATE.start_gl_insert_~node~0.offset (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_21))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| v_ULTIMATE.start_gl_insert_~node~0.base_21 (_ bv1 1)) (select (select (store |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_21 (store (store (store (store (select |c_#memory_$Pointer$.base| v_ULTIMATE.start_gl_insert_~node~0.base_21) ULTIMATE.start_gl_insert_~node~0.offset v_DerPreprocessor_13) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv1 32)) v_DerPreprocessor_14) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv2 32)) v_DerPreprocessor_15) (bvadd ULTIMATE.start_gl_insert_~node~0.offset (_ bv3 32)) v_DerPreprocessor_16)) |c_~#gl_list~0.base|) |c_~#gl_list~0.offset|))))))))))) (_ bv1 1))))) is different from false [2021-10-20 06:31:56,172 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 2612724 treesize of output 2604532 [2021-10-20 06:32:03,422 WARN L207 SmtUtils]: Spent 7.25 s on a formula simplification that was a NOOP. DAG size: 2340 [2021-10-20 06:32:03,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-20 06:32:03,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:32:03,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-20 06:32:03,512 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-20 06:32:03,513 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-20 06:32:03,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-20 06:32:03,521 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-20 06:32:03,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-20 06:32:03,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-20 06:32:03,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-20 06:32:03,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-20 06:32:03,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-20 06:32:03,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-20 06:32:03,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-20 06:32:03,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-20 06:32:03,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-20 06:32:03,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-20 06:32:03,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-20 06:32:03,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-20 06:32:03,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-20 06:32:03,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-20 06:32:03,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-20 06:32:03,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-20 06:32:03,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-20 06:32:03,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-20 06:32:03,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-20 06:32:03,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-20 06:32:03,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-20 06:32:03,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-20 06:32:03,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-20 06:32:03,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-20 06:32:03,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-20 06:32:03,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-20 06:32:03,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-20 06:32:03,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-20 06:32:03,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-20 06:32:03,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-20 06:32:03,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-20 06:32:03,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-20 06:32:03,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-20 06:32:03,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-20 06:32:03,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-20 06:32:03,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-20 06:32:03,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-20 06:32:03,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-20 06:32:03,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATION [2021-10-20 06:32:03,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-20 06:32:03,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-20 06:32:03,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATION [2021-10-20 06:32:03,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATION [2021-10-20 06:32:03,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATION [2021-10-20 06:32:03,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATION [2021-10-20 06:32:03,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-20 06:32:03,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-20 06:32:03,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-20 06:32:03,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-20 06:32:03,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATION [2021-10-20 06:32:03,531 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52REQUIRES_VIOLATION [2021-10-20 06:32:03,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-20 06:32:03,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-20 06:32:03,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-20 06:32:03,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-20 06:32:03,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION [2021-10-20 06:32:03,532 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION [2021-10-20 06:32:03,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION [2021-10-20 06:32:03,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION [2021-10-20 06:32:03,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61REQUIRES_VIOLATION [2021-10-20 06:32:03,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62REQUIRES_VIOLATION [2021-10-20 06:32:03,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION [2021-10-20 06:32:03,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION [2021-10-20 06:32:03,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION [2021-10-20 06:32:03,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION [2021-10-20 06:32:03,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67REQUIRES_VIOLATION [2021-10-20 06:32:03,534 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68REQUIRES_VIOLATION [2021-10-20 06:32:03,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69REQUIRES_VIOLATION [2021-10-20 06:32:03,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70REQUIRES_VIOLATION [2021-10-20 06:32:03,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION [2021-10-20 06:32:03,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 06:32:03,535 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 06:32:03,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 06:32:03,536 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 06:32:03,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-20 06:32:03,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-10-20 06:32:03,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-20 06:32:04,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:32:04,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:32:04,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:32:04 BoogieIcfgContainer [2021-10-20 06:32:04,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:32:04,168 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:32:04,168 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:32:04,168 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:32:04,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:29:50" (3/4) ... [2021-10-20 06:32:04,172 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 06:32:04,172 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:32:04,173 INFO L168 Benchmark]: Toolchain (without parser) took 135691.46 ms. Allocated memory was 60.8 MB in the beginning and 367.0 MB in the end (delta: 306.2 MB). Free memory was 39.4 MB in the beginning and 121.7 MB in the end (delta: -82.3 MB). Peak memory consumption was 223.0 MB. Max. memory is 16.1 GB. [2021-10-20 06:32:04,173 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:32:04,173 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.61 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 31.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:32:04,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.16 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 28.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:32:04,175 INFO L168 Benchmark]: Boogie Preprocessor took 56.01 ms. Allocated memory is still 60.8 MB. Free memory was 28.3 MB in the beginning and 25.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:32:04,176 INFO L168 Benchmark]: RCFGBuilder took 1186.35 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 25.8 MB in the beginning and 52.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:32:04,176 INFO L168 Benchmark]: TraceAbstraction took 133626.10 ms. Allocated memory was 75.5 MB in the beginning and 367.0 MB in the end (delta: 291.5 MB). Free memory was 51.8 MB in the beginning and 121.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 226.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:32:04,177 INFO L168 Benchmark]: Witness Printer took 3.78 ms. Allocated memory is still 367.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:32:04,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 753.61 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 31.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.16 ms. Allocated memory is still 60.8 MB. Free memory was 30.9 MB in the beginning and 28.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.01 ms. Allocated memory is still 60.8 MB. Free memory was 28.3 MB in the beginning and 25.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1186.35 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 25.8 MB in the beginning and 52.3 MB in the end (delta: -26.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 133626.10 ms. Allocated memory was 75.5 MB in the beginning and 367.0 MB in the end (delta: 291.5 MB). Free memory was 51.8 MB in the beginning and 121.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 226.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.78 ms. Allocated memory is still 367.0 MB. Free memory is still 121.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L564] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L547] head->next [L535] next->prev = new [L536] new->next = next [L537] new->prev = prev [L538] prev->next = new [L578] COND TRUE __VERIFIER_nondet_int() [L567] struct node *node = malloc(sizeof *node); [L568] COND FALSE !(!node) [L570] node->value = value [L547] head->next [L535] next->prev = new - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 596]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 590]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 557]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 537]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 551]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 543]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 552]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 553]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 583]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 584]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 618]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 163 locations, 76 error locations. Started 1 CEGAR loops. OverallTime: 133561.8ms, OverallIterations: 14, TraceHistogramMax: 2, EmptinessCheckTime: 17.6ms, AutomataDifference: 58932.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1097 SDtfs, 6138 SDslu, 1614 SDs, 0 SdLazy, 2921 SolverSat, 212 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 25710.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 158 SyntacticMatches, 5 SemanticMatches, 106 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 59322.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=0, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 123.7ms AutomataMinimizationTime, 13 MinimizatonAttempts, 595 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 92.6ms SsaConstructionTime, 534.1ms SatisfiabilityAnalysisTime, 34971.9ms InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 224 ConstructedInterpolants, 24 QuantifiedInterpolants, 2688 SizeOfPredicates, 80 NumberOfNonLiveVariables, 901 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-20 06:32:04,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_740ae8c1-8445-4e94-a549-89fe92489f43/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...