./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS --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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:54:55,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:54:55,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:54:55,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:54:55,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:54:55,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:54:55,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:54:55,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:54:55,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:54:55,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:54:55,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:54:55,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:54:55,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:54:55,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:54:55,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:54:55,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:54:55,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:54:55,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:54:55,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:54:55,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:54:55,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:54:55,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:54:55,841 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:54:55,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:54:55,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:54:55,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:54:55,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:54:55,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:54:55,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:54:55,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:54:55,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:54:55,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:54:55,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:54:55,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:54:55,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:54:55,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:54:55,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:54:55,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:54:55,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:54:55,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:54:55,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:54:55,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-19 07:54:55,909 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:54:55,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:54:55,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:54:55,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:54:55,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:54:55,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:54:55,914 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:54:55,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:54:55,915 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:54:55,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:54:55,916 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:54:55,916 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:54:55,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:54:55,917 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:54:55,917 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:54:55,917 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:54:55,917 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:54:55,918 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:54:55,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:54:55,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:54:55,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:54:55,921 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:54:55,921 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:54:55,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:54:55,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:54:55,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:54:55,922 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:54:55,922 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:54:55,923 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:54:55,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:54:55,923 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:54:55,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:54:55,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:54:55,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:54:55,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:54:55,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:54:55,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:54:55,925 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:54:55,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:54:55,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:54:55,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:54:55,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:54:55,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2022-11-19 07:54:56,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:54:56,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:54:56,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:54:56,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:54:56,269 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:54:56,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2022-11-19 07:54:56,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/42d73cef9/e6e4a1a6df59436285f3dbe07bd74593/FLAG020cf365b [2022-11-19 07:54:57,018 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:54:57,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2022-11-19 07:54:57,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/42d73cef9/e6e4a1a6df59436285f3dbe07bd74593/FLAG020cf365b [2022-11-19 07:54:57,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/42d73cef9/e6e4a1a6df59436285f3dbe07bd74593 [2022-11-19 07:54:57,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:54:57,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:54:57,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:57,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:54:57,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:54:57,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:57" (1/1) ... [2022-11-19 07:54:57,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f1737b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:57, skipping insertion in model container [2022-11-19 07:54:57,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:57" (1/1) ... [2022-11-19 07:54:57,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:54:57,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:54:57,957 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2022-11-19 07:54:58,086 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2022-11-19 07:54:58,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:54:58,124 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-19 07:54:58,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4917d17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:58, skipping insertion in model container [2022-11-19 07:54:58,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:54:58,129 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-19 07:54:58,131 INFO L158 Benchmark]: Toolchain (without parser) took 858.54ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 70.2MB in the end (delta: -9.4MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-11-19 07:54:58,133 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:54:58,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 855.31ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 70.2MB in the end (delta: -9.6MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-11-19 07:54:58,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 104.9MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 855.31ms. Allocated memory is still 104.9MB. Free memory was 60.6MB in the beginning and 70.2MB in the end (delta: -9.6MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS --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 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:55:00,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:55:00,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:55:00,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:55:00,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:55:00,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:55:00,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:55:00,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:55:00,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:55:00,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:55:00,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:55:00,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:55:00,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:55:00,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:55:00,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:55:00,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:55:00,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:55:00,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:55:00,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:55:00,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:55:00,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:55:00,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:55:00,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:55:00,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:55:00,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:55:00,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:55:00,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:55:00,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:55:00,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:55:00,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:55:00,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:55:00,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:55:00,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:55:00,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:55:00,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:55:00,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:55:00,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:55:00,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:55:00,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:55:00,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:55:00,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:55:00,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-19 07:55:00,671 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:55:00,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:55:00,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:55:00,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:55:00,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:55:00,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:55:00,674 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:55:00,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:55:00,674 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:55:00,675 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:55:00,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:55:00,675 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:55:00,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-19 07:55:00,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-19 07:55:00,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:55:00,677 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:55:00,677 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:55:00,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:55:00,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:55:00,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:55:00,678 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-19 07:55:00,678 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-19 07:55:00,679 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-19 07:55:00,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:55:00,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:55:00,679 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:55:00,680 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:55:00,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:55:00,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:55:00,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:55:00,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:55:00,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:55:00,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:55:00,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:55:00,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:55:00,682 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:55:00,682 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:55:00,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:55:00,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:55:00,683 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_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2022-11-19 07:55:01,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:55:01,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:55:01,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:55:01,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:55:01,203 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:55:01,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2022-11-19 07:55:01,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/94589709a/41989013a96143aabf966f59ad210874/FLAG70571c2fe [2022-11-19 07:55:02,049 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:55:02,050 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2022-11-19 07:55:02,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/94589709a/41989013a96143aabf966f59ad210874/FLAG70571c2fe [2022-11-19 07:55:02,214 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/data/94589709a/41989013a96143aabf966f59ad210874 [2022-11-19 07:55:02,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:55:02,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:55:02,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:55:02,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:55:02,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:55:02,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:02" (1/1) ... [2022-11-19 07:55:02,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e188d52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:02, skipping insertion in model container [2022-11-19 07:55:02,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:02" (1/1) ... [2022-11-19 07:55:02,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:55:02,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:55:02,902 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2022-11-19 07:55:03,056 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2022-11-19 07:55:03,061 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:55:03,075 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 07:55:03,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:55:03,120 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2022-11-19 07:55:03,214 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2022-11-19 07:55:03,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:55:03,222 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:55:03,284 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2022-11-19 07:55:03,344 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2022-11-19 07:55:03,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:55:03,396 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:55:03,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03 WrapperNode [2022-11-19 07:55:03,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:55:03,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:55:03,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:55:03,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:55:03,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,493 INFO L138 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 886 [2022-11-19 07:55:03,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:55:03,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:55:03,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:55:03,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:55:03,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,568 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:55:03,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:55:03,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:55:03,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:55:03,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (1/1) ... [2022-11-19 07:55:03,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:55:03,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:03,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:55:03,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 07:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:55:03,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:55:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:55:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 07:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:55:03,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:55:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:55:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:55:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:55:03,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:55:04,001 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:55:04,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:55:04,009 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-19 07:55:09,186 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:55:09,218 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:55:09,226 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-11-19 07:55:09,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:09 BoogieIcfgContainer [2022-11-19 07:55:09,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:55:09,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:55:09,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:55:09,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:55:09,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:02" (1/3) ... [2022-11-19 07:55:09,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4958fcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:09, skipping insertion in model container [2022-11-19 07:55:09,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:03" (2/3) ... [2022-11-19 07:55:09,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4958fcd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:09, skipping insertion in model container [2022-11-19 07:55:09,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:09" (3/3) ... [2022-11-19 07:55:09,248 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2022-11-19 07:55:09,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:55:09,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-11-19 07:55:09,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:55:09,372 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50f30c35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:55:09,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-11-19 07:55:09,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 442 states have (on average 2.2171945701357467) internal successors, (980), 875 states have internal predecessors, (980), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:09,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:55:09,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:09,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:55:09,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-19 07:55:09,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:09,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110237280] [2022-11-19 07:55:09,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:09,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:09,428 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:09,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 07:55:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:09,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:55:09,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:09,699 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-19 07:55:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:09,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:09,737 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:09,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110237280] [2022-11-19 07:55:09,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110237280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:09,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:09,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:55:09,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117174067] [2022-11-19 07:55:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:09,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:09,804 INFO L87 Difference]: Start difference. First operand has 881 states, 442 states have (on average 2.2171945701357467) internal successors, (980), 875 states have internal predecessors, (980), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 07:55:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:11,668 INFO L93 Difference]: Finished difference Result 868 states and 923 transitions. [2022-11-19 07:55:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:11,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-19 07:55:11,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:11,689 INFO L225 Difference]: With dead ends: 868 [2022-11-19 07:55:11,689 INFO L226 Difference]: Without dead ends: 866 [2022-11-19 07:55:11,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:11,695 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 802 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:11,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 580 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 07:55:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-19 07:55:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 865. [2022-11-19 07:55:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 442 states have (on average 2.0475113122171944) internal successors, (905), 859 states have internal predecessors, (905), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 921 transitions. [2022-11-19 07:55:11,771 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 921 transitions. Word has length 3 [2022-11-19 07:55:11,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:11,771 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 921 transitions. [2022-11-19 07:55:11,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 07:55:11,772 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 921 transitions. [2022-11-19 07:55:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:55:11,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:11,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:55:11,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:11,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-19 07:55:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:11,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747820206] [2022-11-19 07:55:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:11,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:11,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:12,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 07:55:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:12,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:55:12,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:12,119 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:55:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:12,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:12,133 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747820206] [2022-11-19 07:55:12,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747820206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:12,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:12,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:55:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40256685] [2022-11-19 07:55:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:12,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:12,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:12,138 INFO L87 Difference]: Start difference. First operand 865 states and 921 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 07:55:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:15,320 INFO L93 Difference]: Finished difference Result 1084 states and 1171 transitions. [2022-11-19 07:55:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-19 07:55:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:15,325 INFO L225 Difference]: With dead ends: 1084 [2022-11-19 07:55:15,326 INFO L226 Difference]: Without dead ends: 1084 [2022-11-19 07:55:15,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:15,327 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 240 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:15,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1308 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 07:55:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-19 07:55:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 997. [2022-11-19 07:55:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 570 states have (on average 2.0052631578947366) internal successors, (1143), 991 states have internal predecessors, (1143), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:55:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1169 transitions. [2022-11-19 07:55:15,365 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1169 transitions. Word has length 3 [2022-11-19 07:55:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:15,365 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1169 transitions. [2022-11-19 07:55:15,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-19 07:55:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1169 transitions. [2022-11-19 07:55:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:55:15,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:15,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:15,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:15,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:15,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:15,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-19 07:55:15,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:15,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536409507] [2022-11-19 07:55:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:15,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:15,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:15,581 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:15,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 07:55:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:15,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:55:15,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:15,758 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:55:15,766 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-19 07:55:15,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:15,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:55:15,859 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:55:15,860 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-19 07:55:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:15,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:15,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:15,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536409507] [2022-11-19 07:55:15,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536409507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:15,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:15,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730185626] [2022-11-19 07:55:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:15,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:15,887 INFO L87 Difference]: Start difference. First operand 997 states and 1169 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-19 07:55:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:18,936 INFO L93 Difference]: Finished difference Result 987 states and 1158 transitions. [2022-11-19 07:55:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 [2022-11-19 07:55:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:18,943 INFO L225 Difference]: With dead ends: 987 [2022-11-19 07:55:18,943 INFO L226 Difference]: Without dead ends: 987 [2022-11-19 07:55:18,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:18,945 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1662 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:18,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 336 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:55:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-19 07:55:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 854. [2022-11-19 07:55:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 442 states have (on average 2.020361990950226) internal successors, (893), 848 states have internal predecessors, (893), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:18,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 909 transitions. [2022-11-19 07:55:18,974 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 909 transitions. Word has length 7 [2022-11-19 07:55:18,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:18,975 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 909 transitions. [2022-11-19 07:55:18,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-11-19 07:55:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 909 transitions. [2022-11-19 07:55:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:55:18,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:18,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:18,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:19,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:19,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:19,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-19 07:55:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:19,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156870818] [2022-11-19 07:55:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:19,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:19,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:19,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:19,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 07:55:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:19,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:55:19,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:19,345 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-19 07:55:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:19,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:19,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:19,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156870818] [2022-11-19 07:55:19,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156870818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:19,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:19,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:55:19,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500353922] [2022-11-19 07:55:19,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:19,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:19,376 INFO L87 Difference]: Start difference. First operand 854 states and 909 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-19 07:55:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:21,718 INFO L93 Difference]: Finished difference Result 1030 states and 1116 transitions. [2022-11-19 07:55:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:21,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 8 [2022-11-19 07:55:21,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:21,725 INFO L225 Difference]: With dead ends: 1030 [2022-11-19 07:55:21,725 INFO L226 Difference]: Without dead ends: 1030 [2022-11-19 07:55:21,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:21,727 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 812 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:21,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 869 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:55:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-19 07:55:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 807. [2022-11-19 07:55:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 442 states have (on average 1.914027149321267) internal successors, (846), 801 states have internal predecessors, (846), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 862 transitions. [2022-11-19 07:55:21,752 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 862 transitions. Word has length 8 [2022-11-19 07:55:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:21,753 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 862 transitions. [2022-11-19 07:55:21,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-19 07:55:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 862 transitions. [2022-11-19 07:55:21,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 07:55:21,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:21,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:21,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:21,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:21,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:21,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-19 07:55:21,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:21,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236506528] [2022-11-19 07:55:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:21,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:21,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:21,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:22,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 07:55:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:22,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:55:22,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:22,150 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:55:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:22,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:22,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:22,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236506528] [2022-11-19 07:55:22,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236506528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:22,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:22,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:55:22,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655921743] [2022-11-19 07:55:22,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:22,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:22,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:22,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:22,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:22,189 INFO L87 Difference]: Start difference. First operand 807 states and 862 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-19 07:55:25,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:25,345 INFO L93 Difference]: Finished difference Result 1097 states and 1185 transitions. [2022-11-19 07:55:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:25,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 8 [2022-11-19 07:55:25,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:25,350 INFO L225 Difference]: With dead ends: 1097 [2022-11-19 07:55:25,350 INFO L226 Difference]: Without dead ends: 1097 [2022-11-19 07:55:25,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:25,352 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 501 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:25,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1225 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 07:55:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-19 07:55:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 829. [2022-11-19 07:55:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 474 states have (on average 1.9029535864978904) internal successors, (902), 823 states have internal predecessors, (902), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 918 transitions. [2022-11-19 07:55:25,378 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 918 transitions. Word has length 8 [2022-11-19 07:55:25,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:25,378 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 918 transitions. [2022-11-19 07:55:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-19 07:55:25,379 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 918 transitions. [2022-11-19 07:55:25,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:55:25,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:25,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:25,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-19 07:55:25,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:25,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2100586073, now seen corresponding path program 1 times [2022-11-19 07:55:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:25,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137995643] [2022-11-19 07:55:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:25,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:25,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:25,594 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:25,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 07:55:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:25,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:55:25,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:25,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:55:25,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:55:25,844 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 07:55:25,850 INFO L350 Elim1Store]: Elim1 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 30 treesize of output 39 [2022-11-19 07:55:25,930 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 07:55:25,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-19 07:55:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:25,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:25,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:25,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137995643] [2022-11-19 07:55:25,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137995643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:25,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:25,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:55:25,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142906424] [2022-11-19 07:55:25,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:25,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:25,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:25,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:25,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:25,954 INFO L87 Difference]: Start difference. First operand 829 states and 918 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-19 07:55:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:27,767 INFO L93 Difference]: Finished difference Result 1050 states and 1169 transitions. [2022-11-19 07:55:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:27,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 [2022-11-19 07:55:27,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:27,777 INFO L225 Difference]: With dead ends: 1050 [2022-11-19 07:55:27,777 INFO L226 Difference]: Without dead ends: 1050 [2022-11-19 07:55:27,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:27,779 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 238 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:27,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2327 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-19 07:55:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-11-19 07:55:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 831. [2022-11-19 07:55:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 476 states have (on average 1.8991596638655461) internal successors, (904), 825 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 920 transitions. [2022-11-19 07:55:27,804 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 920 transitions. Word has length 10 [2022-11-19 07:55:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:27,804 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 920 transitions. [2022-11-19 07:55:27,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2022-11-19 07:55:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 920 transitions. [2022-11-19 07:55:27,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:55:27,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:27,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:27,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:28,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:28,022 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:28,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-19 07:55:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:28,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070078908] [2022-11-19 07:55:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:28,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:28,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:28,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:28,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 07:55:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:28,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 07:55:28,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:28,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:28,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070078908] [2022-11-19 07:55:28,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070078908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:28,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:28,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031458952] [2022-11-19 07:55:28,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:28,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:28,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:28,275 INFO L87 Difference]: Start difference. First operand 831 states and 920 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-19 07:55:28,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:28,312 INFO L93 Difference]: Finished difference Result 800 states and 888 transitions. [2022-11-19 07:55:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:28,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 18 [2022-11-19 07:55:28,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:28,317 INFO L225 Difference]: With dead ends: 800 [2022-11-19 07:55:28,317 INFO L226 Difference]: Without dead ends: 800 [2022-11-19 07:55:28,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:28,322 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 774 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:28,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 837 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:28,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-19 07:55:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2022-11-19 07:55:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 458 states have (on average 1.8799126637554586) internal successors, (861), 783 states have internal predecessors, (861), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 877 transitions. [2022-11-19 07:55:28,353 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 877 transitions. Word has length 18 [2022-11-19 07:55:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:28,354 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 877 transitions. [2022-11-19 07:55:28,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-19 07:55:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 877 transitions. [2022-11-19 07:55:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:55:28,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:28,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:28,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:28,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:28,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-19 07:55:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:28,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189322923] [2022-11-19 07:55:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:28,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:28,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:28,585 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:28,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:55:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:28,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:55:28,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:28,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:28,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:28,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189322923] [2022-11-19 07:55:28,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189322923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:28,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:28,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:55:28,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94525477] [2022-11-19 07:55:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:28,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:28,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:28,853 INFO L87 Difference]: Start difference. First operand 789 states and 877 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-19 07:55:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:28,937 INFO L93 Difference]: Finished difference Result 779 states and 860 transitions. [2022-11-19 07:55:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-11-19 07:55:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:28,941 INFO L225 Difference]: With dead ends: 779 [2022-11-19 07:55:28,941 INFO L226 Difference]: Without dead ends: 779 [2022-11-19 07:55:28,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:28,942 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 755 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:28,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1545 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:55:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-19 07:55:28,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 767. [2022-11-19 07:55:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 450 states have (on average 1.8488888888888888) internal successors, (832), 761 states have internal predecessors, (832), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:28,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 848 transitions. [2022-11-19 07:55:28,962 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 848 transitions. Word has length 20 [2022-11-19 07:55:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:28,963 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 848 transitions. [2022-11-19 07:55:28,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-19 07:55:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 848 transitions. [2022-11-19 07:55:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:55:28,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:28,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:28,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:29,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:29,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-19 07:55:29,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:29,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302101197] [2022-11-19 07:55:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:29,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:29,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:29,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:29,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 07:55:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:29,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:55:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:29,437 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-19 07:55:29,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:29,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:29,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:29,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302101197] [2022-11-19 07:55:29,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302101197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:29,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:29,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412234096] [2022-11-19 07:55:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:29,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:29,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:29,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:29,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:29,568 INFO L87 Difference]: Start difference. First operand 767 states and 848 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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) [2022-11-19 07:55:32,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:32,060 INFO L93 Difference]: Finished difference Result 997 states and 1109 transitions. [2022-11-19 07:55:32,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:32,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 34 [2022-11-19 07:55:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:32,064 INFO L225 Difference]: With dead ends: 997 [2022-11-19 07:55:32,065 INFO L226 Difference]: Without dead ends: 997 [2022-11-19 07:55:32,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:32,066 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1353 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:32,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 779 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:55:32,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-19 07:55:32,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 763. [2022-11-19 07:55:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 450 states have (on average 1.84) internal successors, (828), 757 states have internal predecessors, (828), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 844 transitions. [2022-11-19 07:55:32,086 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 844 transitions. Word has length 34 [2022-11-19 07:55:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:32,086 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 844 transitions. [2022-11-19 07:55:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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) [2022-11-19 07:55:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 844 transitions. [2022-11-19 07:55:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:55:32,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:32,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:32,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:32,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:32,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:32,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:32,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-19 07:55:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:32,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428115382] [2022-11-19 07:55:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:32,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:32,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:32,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:32,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:55:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:32,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 07:55:32,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:32,572 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:55:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:32,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:32,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:32,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428115382] [2022-11-19 07:55:32,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428115382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:32,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:32,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:32,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588713129] [2022-11-19 07:55:32,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:32,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:32,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:32,817 INFO L87 Difference]: Start difference. First operand 763 states and 844 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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) [2022-11-19 07:55:36,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:36,573 INFO L93 Difference]: Finished difference Result 1038 states and 1118 transitions. [2022-11-19 07:55:36,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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 34 [2022-11-19 07:55:36,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:36,579 INFO L225 Difference]: With dead ends: 1038 [2022-11-19 07:55:36,579 INFO L226 Difference]: Without dead ends: 1038 [2022-11-19 07:55:36,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:36,580 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 806 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:36,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1274 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:55:36,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-19 07:55:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 759. [2022-11-19 07:55:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 450 states have (on average 1.8311111111111111) internal successors, (824), 753 states have internal predecessors, (824), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 840 transitions. [2022-11-19 07:55:36,600 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 840 transitions. Word has length 34 [2022-11-19 07:55:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:36,600 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 840 transitions. [2022-11-19 07:55:36,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 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) [2022-11-19 07:55:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 840 transitions. [2022-11-19 07:55:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 07:55:36,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:36,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:36,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-19 07:55:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:36,818 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:36,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:36,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2022-11-19 07:55:36,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:36,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50506778] [2022-11-19 07:55:36,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:36,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:36,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:36,821 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:36,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-19 07:55:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:37,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:55:37,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:37,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:37,192 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:37,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50506778] [2022-11-19 07:55:37,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50506778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:37,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:37,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:55:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423639798] [2022-11-19 07:55:37,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:37,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:37,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:37,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:37,196 INFO L87 Difference]: Start difference. First operand 759 states and 840 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-19 07:55:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:37,272 INFO L93 Difference]: Finished difference Result 764 states and 841 transitions. [2022-11-19 07:55:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:37,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2022-11-19 07:55:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:37,276 INFO L225 Difference]: With dead ends: 764 [2022-11-19 07:55:37,277 INFO L226 Difference]: Without dead ends: 764 [2022-11-19 07:55:37,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:37,278 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 724 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:37,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1523 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:55:37,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-19 07:55:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 753. [2022-11-19 07:55:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 444 states have (on average 1.8333333333333333) internal successors, (814), 747 states have internal predecessors, (814), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 07:55:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 830 transitions. [2022-11-19 07:55:37,322 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 830 transitions. Word has length 49 [2022-11-19 07:55:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:37,322 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 830 transitions. [2022-11-19 07:55:37,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2022-11-19 07:55:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 830 transitions. [2022-11-19 07:55:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-19 07:55:37,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:37,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:37,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:37,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:37,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2022-11-19 07:55:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:37,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407162653] [2022-11-19 07:55:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:37,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:37,545 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:37,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 07:55:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:37,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:55:37,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:38,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:38,217 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:38,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407162653] [2022-11-19 07:55:38,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407162653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:38,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:38,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74514540] [2022-11-19 07:55:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:55:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:55:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:38,220 INFO L87 Difference]: Start difference. First operand 753 states and 830 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-11-19 07:55:38,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:38,383 INFO L93 Difference]: Finished difference Result 955 states and 1054 transitions. [2022-11-19 07:55:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:55:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-19 07:55:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:38,389 INFO L225 Difference]: With dead ends: 955 [2022-11-19 07:55:38,389 INFO L226 Difference]: Without dead ends: 955 [2022-11-19 07:55:38,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:55:38,391 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 229 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:38,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1539 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:55:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-11-19 07:55:38,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 900. [2022-11-19 07:55:38,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 586 states have (on average 1.7491467576791808) internal successors, (1025), 894 states have internal predecessors, (1025), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:55:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1051 transitions. [2022-11-19 07:55:38,417 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1051 transitions. Word has length 57 [2022-11-19 07:55:38,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:38,417 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1051 transitions. [2022-11-19 07:55:38,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-11-19 07:55:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1051 transitions. [2022-11-19 07:55:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 07:55:38,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:38,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:38,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-19 07:55:38,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:38,635 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-19 07:55:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:38,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973128206] [2022-11-19 07:55:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:38,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:38,638 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:38,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-19 07:55:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:39,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:55:39,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:39,129 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-19 07:55:39,137 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:55:39,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:55:39,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-19 07:55:39,837 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-19 07:55:39,838 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 13 [2022-11-19 07:55:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:39,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:39,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:39,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973128206] [2022-11-19 07:55:39,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973128206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:39,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:39,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:55:39,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505659716] [2022-11-19 07:55:39,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:39,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:39,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:39,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:39,859 INFO L87 Difference]: Start difference. First operand 900 states and 1051 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-19 07:55:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:42,798 INFO L93 Difference]: Finished difference Result 1181 states and 1437 transitions. [2022-11-19 07:55:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:42,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-11-19 07:55:42,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:42,803 INFO L225 Difference]: With dead ends: 1181 [2022-11-19 07:55:42,803 INFO L226 Difference]: Without dead ends: 1181 [2022-11-19 07:55:42,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:42,805 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1557 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:42,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 394 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-19 07:55:42,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-19 07:55:42,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 830. [2022-11-19 07:55:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 554 states have (on average 1.6624548736462095) internal successors, (921), 824 states have internal predecessors, (921), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:55:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 947 transitions. [2022-11-19 07:55:42,828 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 947 transitions. Word has length 60 [2022-11-19 07:55:42,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:42,829 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 947 transitions. [2022-11-19 07:55:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-11-19 07:55:42,829 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 947 transitions. [2022-11-19 07:55:42,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:55:42,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:42,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:42,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-19 07:55:43,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:43,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-19 07:55:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:43,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282673410] [2022-11-19 07:55:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:43,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:43,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:43,051 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:43,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 07:55:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:43,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:55:43,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:43,446 INFO L350 Elim1Store]: Elim1 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 7 [2022-11-19 07:55:43,465 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-19 07:55:43,504 INFO L350 Elim1Store]: Elim1 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 11 [2022-11-19 07:55:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:43,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:43,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:43,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282673410] [2022-11-19 07:55:43,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282673410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:43,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:43,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:55:43,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801337706] [2022-11-19 07:55:43,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:43,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:55:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:43,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:55:43,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:43,523 INFO L87 Difference]: Start difference. First operand 830 states and 947 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:55:46,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:46,377 INFO L93 Difference]: Finished difference Result 829 states and 946 transitions. [2022-11-19 07:55:46,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:55:46,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-19 07:55:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:46,381 INFO L225 Difference]: With dead ends: 829 [2022-11-19 07:55:46,381 INFO L226 Difference]: Without dead ends: 829 [2022-11-19 07:55:46,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:55:46,382 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 4 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:46,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1861 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:55:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-19 07:55:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-11-19 07:55:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 554 states have (on average 1.660649819494585) internal successors, (920), 823 states have internal predecessors, (920), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:55:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 946 transitions. [2022-11-19 07:55:46,401 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 946 transitions. Word has length 65 [2022-11-19 07:55:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:46,402 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 946 transitions. [2022-11-19 07:55:46,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:55:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 946 transitions. [2022-11-19 07:55:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:55:46,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:46,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:46,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:46,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:46,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:46,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:46,621 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-19 07:55:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:46,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847720630] [2022-11-19 07:55:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:46,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:46,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:46,624 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:46,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 07:55:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:47,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:55:47,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:47,052 INFO L350 Elim1Store]: Elim1 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 [2022-11-19 07:55:47,084 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-19 07:55:47,096 INFO L350 Elim1Store]: Elim1 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 13 treesize of output 9 [2022-11-19 07:55:47,193 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 9 [2022-11-19 07:55:47,203 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 7 [2022-11-19 07:55:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:47,226 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:47,226 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:47,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847720630] [2022-11-19 07:55:47,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847720630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:47,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:47,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:55:47,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047964206] [2022-11-19 07:55:47,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:55:47,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:55:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:47,228 INFO L87 Difference]: Start difference. First operand 829 states and 946 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:55:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:50,999 INFO L93 Difference]: Finished difference Result 828 states and 945 transitions. [2022-11-19 07:55:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:55:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-19 07:55:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:51,002 INFO L225 Difference]: With dead ends: 828 [2022-11-19 07:55:51,002 INFO L226 Difference]: Without dead ends: 828 [2022-11-19 07:55:51,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:55:51,003 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:51,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1881 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:55:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-19 07:55:51,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2022-11-19 07:55:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 553 states have (on average 1.6618444846292948) internal successors, (919), 822 states have internal predecessors, (919), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:55:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 945 transitions. [2022-11-19 07:55:51,022 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 945 transitions. Word has length 65 [2022-11-19 07:55:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:51,023 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 945 transitions. [2022-11-19 07:55:51,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-11-19 07:55:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 945 transitions. [2022-11-19 07:55:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 07:55:51,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:51,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:51,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:51,239 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash -561441905, now seen corresponding path program 1 times [2022-11-19 07:55:51,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:51,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841484273] [2022-11-19 07:55:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:51,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:51,242 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:51,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-19 07:55:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:51,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:55:51,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:51,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:55:51,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:51,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841484273] [2022-11-19 07:55:51,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841484273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:55:51,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:55:51,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:55:51,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962110274] [2022-11-19 07:55:51,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:55:51,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:55:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:51,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:55:51,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:55:51,715 INFO L87 Difference]: Start difference. First operand 828 states and 945 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:55:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:51,774 INFO L93 Difference]: Finished difference Result 831 states and 949 transitions. [2022-11-19 07:55:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:55:51,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-19 07:55:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:51,781 INFO L225 Difference]: With dead ends: 831 [2022-11-19 07:55:51,781 INFO L226 Difference]: Without dead ends: 831 [2022-11-19 07:55:51,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:55:51,782 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:51,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2137 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:55:51,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-19 07:55:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2022-11-19 07:55:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 555 states have (on average 1.6612612612612612) internal successors, (922), 825 states have internal predecessors, (922), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 07:55:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 949 transitions. [2022-11-19 07:55:51,804 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 949 transitions. Word has length 73 [2022-11-19 07:55:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:51,805 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 949 transitions. [2022-11-19 07:55:51,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:55:51,805 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 949 transitions. [2022-11-19 07:55:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:55:51,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:51,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:51,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:52,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:52,027 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1006162070, now seen corresponding path program 1 times [2022-11-19 07:55:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:52,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455790093] [2022-11-19 07:55:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:52,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:52,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:52,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:52,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-19 07:55:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:52,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:55:52,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:52,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:52,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:52,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455790093] [2022-11-19 07:55:52,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455790093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:52,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363457643] [2022-11-19 07:55:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:52,618 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:55:52,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:55:52,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:55:52,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-19 07:55:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:53,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:55:53,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:53,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:53,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363457643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:53,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934839043] [2022-11-19 07:55:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:55:53,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:53,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:53,335 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:55:53,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-19 07:55:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:55:53,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:55:53,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:53,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:53,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934839043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:53,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:55:53,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-19 07:55:53,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480187037] [2022-11-19 07:55:53,789 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:55:53,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:55:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:55:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:55:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:55:53,791 INFO L87 Difference]: Start difference. First operand 831 states and 949 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:55:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:55:54,059 INFO L93 Difference]: Finished difference Result 843 states and 966 transitions. [2022-11-19 07:55:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:55:54,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-19 07:55:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:55:54,064 INFO L225 Difference]: With dead ends: 843 [2022-11-19 07:55:54,064 INFO L226 Difference]: Without dead ends: 843 [2022-11-19 07:55:54,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:55:54,065 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 19 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:55:54,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3557 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:55:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-19 07:55:54,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-19 07:55:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 564 states have (on average 1.6613475177304964) internal successors, (937), 834 states have internal predecessors, (937), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 07:55:54,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 964 transitions. [2022-11-19 07:55:54,085 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 964 transitions. Word has length 74 [2022-11-19 07:55:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:55:54,086 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 964 transitions. [2022-11-19 07:55:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 07:55:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 964 transitions. [2022-11-19 07:55:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:55:54,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:55:54,088 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:55:54,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:54,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:54,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-19 07:55:54,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:54,695 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:55:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:55:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1693213361, now seen corresponding path program 2 times [2022-11-19 07:55:54,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:55:54,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669668022] [2022-11-19 07:55:54,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:55:54,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:55:54,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:55:54,698 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:55:54,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-19 07:55:55,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:55:55,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:55:55,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:55:55,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:55,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:55,695 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:55:55,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669668022] [2022-11-19 07:55:55,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669668022] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:55,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [868750992] [2022-11-19 07:55:55,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:55:55,697 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:55:55,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:55:55,699 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:55:55,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-19 07:55:57,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:55:57,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:55:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:55:57,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:55:57,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:57,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:55:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:55:57,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [868750992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:55:57,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292611791] [2022-11-19 07:55:57,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 07:55:57,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:55:57,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:55:57,894 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:55:57,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-19 07:56:26,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 07:56:26,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:56:26,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:56:26,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:56:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:26,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:56:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:27,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292611791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:56:27,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 07:56:27,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-19 07:56:27,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348526984] [2022-11-19 07:56:27,343 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 07:56:27,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 07:56:27,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:56:27,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 07:56:27,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:56:27,345 INFO L87 Difference]: Start difference. First operand 841 states and 964 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:56:28,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:56:28,577 INFO L93 Difference]: Finished difference Result 862 states and 991 transitions. [2022-11-19 07:56:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 07:56:28,578 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2022-11-19 07:56:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:56:28,582 INFO L225 Difference]: With dead ends: 862 [2022-11-19 07:56:28,582 INFO L226 Difference]: Without dead ends: 856 [2022-11-19 07:56:28,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-19 07:56:28,583 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 86 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 4996 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:56:28,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 4996 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:56:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-19 07:56:28,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 850. [2022-11-19 07:56:28,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 573 states have (on average 1.6544502617801047) internal successors, (948), 843 states have internal predecessors, (948), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-19 07:56:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 975 transitions. [2022-11-19 07:56:28,604 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 975 transitions. Word has length 77 [2022-11-19 07:56:28,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:56:28,604 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 975 transitions. [2022-11-19 07:56:28,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-19 07:56:28,605 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 975 transitions. [2022-11-19 07:56:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:56:28,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:56:28,606 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:56:28,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-19 07:56:28,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-19 07:56:29,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-19 07:56:29,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:29,215 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-19 07:56:29,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:56:29,216 INFO L85 PathProgramCache]: Analyzing trace with hash -537131025, now seen corresponding path program 3 times [2022-11-19 07:56:29,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:56:29,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735927294] [2022-11-19 07:56:29,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:56:29,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 07:56:29,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:56:29,218 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 07:56:29,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-19 07:56:30,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 07:56:30,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:56:30,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:56:30,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:56:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:30,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:56:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:31,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:56:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735927294] [2022-11-19 07:56:31,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735927294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:56:31,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [963689924] [2022-11-19 07:56:31,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:56:31,521 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 07:56:31,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 07:56:31,523 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 07:56:31,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-19 07:56:37,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-19 07:56:37,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 07:56:37,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:56:37,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:56:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:37,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:56:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:56:38,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [963689924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:56:38,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865929280] [2022-11-19 07:56:38,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 07:56:38,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:56:38,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:56:38,005 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:56:38,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efe93bac-5913-465f-85e4-87d76fda0a66/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process