./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/hostid.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8 --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 64bit --witnessprinter.graph.data.programhash 3b6e96321d82dea19b0b24b62173907aded16288 .......................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8 --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 64bit --witnessprinter.graph.data.programhash 3b6e96321d82dea19b0b24b62173907aded16288 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:08,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:08,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:08,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:08,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:08,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:08,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:08,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:08,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:08,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:08,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:08,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:08,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:08,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:08,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:08,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:08,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:08,820 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:08,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:08,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:08,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:08,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:08,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:08,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:08,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:08,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:08,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:08,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:08,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:08,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:08,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:08,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:08,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:08,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:08,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:08,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:08,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:08,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:08,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:08,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:08,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:08,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-13 07:28:08,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:08,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:08,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:08,940 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:08,940 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:08,941 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:08,941 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:28:08,941 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:08,941 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:08,941 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:28:08,943 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:28:08,943 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:08,943 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:28:08,943 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:28:08,944 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:28:08,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:28:08,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:28:08,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:08,945 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:28:08,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:28:08,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:08,946 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:28:08,946 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:28:08,946 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:28:08,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:08,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:08,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:08,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:08,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:08,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:08,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:08,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:08,951 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:28:08,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:28:08,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:08,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:08,952 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6e96321d82dea19b0b24b62173907aded16288 [2021-10-13 07:28:09,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:09,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:09,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:09,314 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:09,315 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:09,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-13 07:28:09,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/faa9309d3/87db7666e1574865828c3ee8ad985ba7/FLAGc3a0f3a95 [2021-10-13 07:28:10,096 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:10,100 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-13 07:28:10,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/faa9309d3/87db7666e1574865828c3ee8ad985ba7/FLAGc3a0f3a95 [2021-10-13 07:28:10,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/faa9309d3/87db7666e1574865828c3ee8ad985ba7 [2021-10-13 07:28:10,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:10,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:10,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:10,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:10,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:10,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:10" (1/1) ... [2021-10-13 07:28:10,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73803ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:10, skipping insertion in model container [2021-10-13 07:28:10,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:10" (1/1) ... [2021-10-13 07:28:10,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:10,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:11,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:11,331 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 07:28:11,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@328c6055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:11, skipping insertion in model container [2021-10-13 07:28:11,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:11,332 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:28:11,335 INFO L168 Benchmark]: Toolchain (without parser) took 1087.88 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 44.7 MB in the beginning and 76.1 MB in the end (delta: -31.5 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:11,336 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:11,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1081.98 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 44.5 MB in the beginning and 76.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:11,340 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 61.0 MB in the beginning and 61.0 MB in the end (delta: 25.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1081.98 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 44.5 MB in the beginning and 76.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1774]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:13,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:13,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:13,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:13,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:13,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:13,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:13,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:13,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:13,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:13,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:13,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:13,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:13,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:13,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:13,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:13,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:13,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:13,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:13,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:13,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:13,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:13,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:13,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:13,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:13,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:13,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:13,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:13,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:13,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:13,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:13,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:13,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:13,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:13,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:13,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:13,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:13,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:13,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:13,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:13,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:13,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-10-13 07:28:13,908 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:13,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:13,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:13,910 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:13,910 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:13,910 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:13,910 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:13,911 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:13,911 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:13,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:28:13,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:28:13,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:13,914 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:28:13,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:28:13,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:13,915 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:28:13,915 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:28:13,915 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:28:13,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:13,916 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:13,916 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:28:13,916 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:28:13,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:13,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:13,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:28:13,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:13,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:13,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:13,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:13,918 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:28:13,918 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:13,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:13,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:13,919 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_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6e96321d82dea19b0b24b62173907aded16288 [2021-10-13 07:28:14,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:14,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:14,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:14,386 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:14,387 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:14,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-13 07:28:14,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/9a77d4915/07c8aa254be641059c85a2f523d4012d/FLAG7d4a3abde [2021-10-13 07:28:15,318 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:15,319 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-10-13 07:28:15,351 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/9a77d4915/07c8aa254be641059c85a2f523d4012d/FLAG7d4a3abde [2021-10-13 07:28:15,475 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/data/9a77d4915/07c8aa254be641059c85a2f523d4012d [2021-10-13 07:28:15,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:15,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:15,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:15,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:15,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:15,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:15" (1/1) ... [2021-10-13 07:28:15,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9eefc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:15, skipping insertion in model container [2021-10-13 07:28:15,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:15" (1/1) ... [2021-10-13 07:28:15,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:15,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:16,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:16,667 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:28:16,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:16,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:16,749 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:16,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:17,025 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:17,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17 WrapperNode [2021-10-13 07:28:17,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:17,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:17,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:17,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:17,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:17,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:17,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:17,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:17,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:17,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:17,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:17,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:17,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (1/1) ... [2021-10-13 07:28:17,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:17,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:17,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:17,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:28:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:28:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:28:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-10-13 07:28:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:28:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:28:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 07:28:18,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:18,299 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 07:28:18,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:18 BoogieIcfgContainer [2021-10-13 07:28:18,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:18,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:18,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:18,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:18,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:15" (1/3) ... [2021-10-13 07:28:18,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677c5b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:18, skipping insertion in model container [2021-10-13 07:28:18,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:17" (2/3) ... [2021-10-13 07:28:18,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@677c5b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:18, skipping insertion in model container [2021-10-13 07:28:18,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:18" (3/3) ... [2021-10-13 07:28:18,311 INFO L111 eAbstractionObserver]: Analyzing ICFG hostid.i [2021-10-13 07:28:18,317 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:18,317 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-10-13 07:28:18,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:18,371 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:28:18,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-10-13 07:28:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 89 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:18,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:28:18,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:18,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:28:18,396 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-13 07:28:18,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:18,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801425464] [2021-10-13 07:28:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:18,442 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:18,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:18,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:18,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:28:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:18,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:18,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:18,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:28:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:18,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:18,754 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:18,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801425464] [2021-10-13 07:28:18,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801425464] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:18,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:18,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:28:18,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389463565] [2021-10-13 07:28:18,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:18,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:18,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:18,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:18,790 INFO L87 Difference]: Start difference. First operand has 90 states, 52 states have (on average 1.9038461538461537) internal successors, (99), 89 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2021-10-13 07:28:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:19,070 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2021-10-13 07:28:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:19,073 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 [2021-10-13 07:28:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:19,085 INFO L225 Difference]: With dead ends: 104 [2021-10-13 07:28:19,086 INFO L226 Difference]: Without dead ends: 102 [2021-10-13 07:28:19,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-10-13 07:28:19,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2021-10-13 07:28:19,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-10-13 07:28:19,146 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 3 [2021-10-13 07:28:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:19,147 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-10-13 07:28:19,148 INFO L471 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) [2021-10-13 07:28:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-10-13 07:28:19,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:28:19,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:19,149 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:28:19,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:19,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:19,371 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-13 07:28:19,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:19,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195496074] [2021-10-13 07:28:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:19,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:19,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:19,376 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:19,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:28:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:19,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:19,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:19,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:28:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:19,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:19,663 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:19,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195496074] [2021-10-13 07:28:19,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195496074] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:19,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:19,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 07:28:19,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886732972] [2021-10-13 07:28:19,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:28:19,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:28:19,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:19,681 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:20,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:20,017 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2021-10-13 07:28:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:20,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:28:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:20,019 INFO L225 Difference]: With dead ends: 85 [2021-10-13 07:28:20,020 INFO L226 Difference]: Without dead ends: 85 [2021-10-13 07:28:20,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:28:20,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-13 07:28:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-10-13 07:28:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 51 states have (on average 1.7450980392156863) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2021-10-13 07:28:20,028 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 3 [2021-10-13 07:28:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:20,029 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2021-10-13 07:28:20,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2021-10-13 07:28:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:28:20,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:20,030 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:28:20,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:20,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:20,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-10-13 07:28:20,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:20,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500035786] [2021-10-13 07:28:20,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:20,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:20,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:20,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:20,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:28:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:20,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:28:20,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:20,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:28:20,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:20,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:20,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:20,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500035786] [2021-10-13 07:28:20,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500035786] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:20,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:20,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:28:20,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697155978] [2021-10-13 07:28:20,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:28:20,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:20,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:28:20,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:28:20,749 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:21,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:21,431 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2021-10-13 07:28:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:28:21,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 6 [2021-10-13 07:28:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:21,433 INFO L225 Difference]: With dead ends: 94 [2021-10-13 07:28:21,433 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 07:28:21,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:28:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 07:28:21,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2021-10-13 07:28:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 57 states have (on average 1.6842105263157894) internal successors, (96), 90 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:21,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2021-10-13 07:28:21,445 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 6 [2021-10-13 07:28:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:21,446 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2021-10-13 07:28:21,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2021-10-13 07:28:21,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:28:21,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:21,447 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:21,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:21,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:21,662 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:21,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:21,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1990005034, now seen corresponding path program 1 times [2021-10-13 07:28:21,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:21,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654303853] [2021-10-13 07:28:21,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:21,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:21,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:21,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:21,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:28:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:21,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:21,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:21,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:21,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:21,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:21,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654303853] [2021-10-13 07:28:21,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654303853] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:21,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [134060937] [2021-10-13 07:28:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:21,972 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:21,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:21,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:21,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:28:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:22,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:22,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:22,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:22,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [134060937] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:22,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918794084] [2021-10-13 07:28:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:22,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:22,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:22,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:22,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:28:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:22,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:22,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:22,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:22,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918794084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:22,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:28:22,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:28:22,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436582185] [2021-10-13 07:28:22,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:28:22,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:28:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:28:22,752 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:22,842 INFO L93 Difference]: Finished difference Result 99 states and 103 transitions. [2021-10-13 07:28:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:28:22,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-13 07:28:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:22,847 INFO L225 Difference]: With dead ends: 99 [2021-10-13 07:28:22,849 INFO L226 Difference]: Without dead ends: 99 [2021-10-13 07:28:22,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:28:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-10-13 07:28:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-10-13 07:28:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.609375) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2021-10-13 07:28:22,865 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 13 [2021-10-13 07:28:22,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:22,866 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2021-10-13 07:28:22,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2021-10-13 07:28:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:28:22,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:22,871 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:28:22,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:23,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:23,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:23,487 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:23,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-10-13 07:28:23,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:23,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557393382] [2021-10-13 07:28:23,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:23,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:23,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:23,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:28:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:23,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:28:23,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:23,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:28:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:23,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:24,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:24,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557393382] [2021-10-13 07:28:24,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557393382] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:24,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1242695584] [2021-10-13 07:28:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:24,851 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:24,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:24,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:28:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:25,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:28:25,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:25,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:28:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:25,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:25,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1242695584] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:25,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901708210] [2021-10-13 07:28:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:25,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:25,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:25,898 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:25,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:28:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:26,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:28:26,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:26,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:28:26,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:26,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:26,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901708210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:26,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:28:26,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-13 07:28:26,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215106140] [2021-10-13 07:28:26,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:28:26,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:28:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:28:26,714 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:28,113 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2021-10-13 07:28:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:28:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 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 14 [2021-10-13 07:28:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:28,115 INFO L225 Difference]: With dead ends: 101 [2021-10-13 07:28:28,115 INFO L226 Difference]: Without dead ends: 101 [2021-10-13 07:28:28,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 683.5ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:28:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-13 07:28:28,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-10-13 07:28:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-13 07:28:28,125 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 14 [2021-10-13 07:28:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:28,125 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-13 07:28:28,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-13 07:28:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:28:28,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:28,127 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:28,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:28,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:28,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:28,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:28,746 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:28,747 INFO L82 PathProgramCache]: Analyzing trace with hash 388981918, now seen corresponding path program 2 times [2021-10-13 07:28:28,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:28,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202695782] [2021-10-13 07:28:28,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:28:28,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:28,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:28,751 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:28,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:28:29,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:28:29,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:28:29,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:28:29,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:29,123 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:28:29,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-13 07:28:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-13 07:28:29,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:29,230 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-13 07:28:29,230 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:29,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202695782] [2021-10-13 07:28:29,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202695782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:29,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:29,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:28:29,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42328815] [2021-10-13 07:28:29,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:29,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:29,233 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:29,417 INFO L93 Difference]: Finished difference Result 112 states and 117 transitions. [2021-10-13 07:28:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:29,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 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 29 [2021-10-13 07:28:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:29,419 INFO L225 Difference]: With dead ends: 112 [2021-10-13 07:28:29,419 INFO L226 Difference]: Without dead ends: 112 [2021-10-13 07:28:29,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-10-13 07:28:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2021-10-13 07:28:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 95 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2021-10-13 07:28:29,426 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 29 [2021-10-13 07:28:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:29,427 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2021-10-13 07:28:29,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2021-10-13 07:28:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:28:29,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:29,428 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:29,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:29,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:29,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:29,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:29,632 INFO L82 PathProgramCache]: Analyzing trace with hash 388981919, now seen corresponding path program 1 times [2021-10-13 07:28:29,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:29,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890691186] [2021-10-13 07:28:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:29,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:29,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:29,634 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:29,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:28:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:29,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:28:29,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:30,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:30,325 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:30,325 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:30,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890691186] [2021-10-13 07:28:30,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890691186] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:30,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1729779310] [2021-10-13 07:28:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:30,326 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:30,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:28:30,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:28:30,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-13 07:28:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:30,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:28:30,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:31,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:31,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1729779310] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:31,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459194064] [2021-10-13 07:28:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:31,161 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:31,162 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:31,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 07:28:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:31,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:28:31,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:31,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:32,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459194064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:32,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:28:32,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 9] total 19 [2021-10-13 07:28:32,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134169417] [2021-10-13 07:28:32,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 07:28:32,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 07:28:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:28:32,043 INFO L87 Difference]: Start difference. First operand 96 states and 100 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:32,602 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2021-10-13 07:28:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 07:28:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 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 29 [2021-10-13 07:28:32,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:32,605 INFO L225 Difference]: With dead ends: 124 [2021-10-13 07:28:32,605 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 07:28:32,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 652.2ms TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2021-10-13 07:28:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 07:28:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-10-13 07:28:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 96 states have (on average 1.34375) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-10-13 07:28:32,613 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 29 [2021-10-13 07:28:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:32,613 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-10-13 07:28:32,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-10-13 07:28:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-13 07:28:32,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:32,616 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:32,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:32,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:33,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:33,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:33,220 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:33,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1981689168, now seen corresponding path program 2 times [2021-10-13 07:28:33,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:33,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941621190] [2021-10-13 07:28:33,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:28:33,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:33,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:33,222 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:33,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 07:28:33,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:28:33,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:28:33,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:28:33,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:33,764 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-13 07:28:33,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-10-13 07:28:33,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-10-13 07:28:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:33,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:34,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:34,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941621190] [2021-10-13 07:28:34,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941621190] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:34,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:34,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 07:28:34,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756817221] [2021-10-13 07:28:34,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:28:34,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:28:34,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:28:34,230 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:35,161 INFO L93 Difference]: Finished difference Result 163 states and 170 transitions. [2021-10-13 07:28:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:28:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-10-13 07:28:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:35,163 INFO L225 Difference]: With dead ends: 163 [2021-10-13 07:28:35,164 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 07:28:35,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 361.6ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:28:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 07:28:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 141. [2021-10-13 07:28:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 114 states have (on average 1.394736842105263) internal successors, (159), 140 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 159 transitions. [2021-10-13 07:28:35,171 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 159 transitions. Word has length 49 [2021-10-13 07:28:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:35,171 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 159 transitions. [2021-10-13 07:28:35,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 159 transitions. [2021-10-13 07:28:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-13 07:28:35,177 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:35,178 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:35,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:35,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:35,392 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2118422360, now seen corresponding path program 1 times [2021-10-13 07:28:35,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:35,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721374762] [2021-10-13 07:28:35,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:35,394 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:35,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:35,394 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:35,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 07:28:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:35,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 07:28:35,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:36,073 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-13 07:28:36,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-10-13 07:28:36,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-10-13 07:28:36,659 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-13 07:28:36,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 57 [2021-10-13 07:28:36,670 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 07:28:36,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 47 [2021-10-13 07:28:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:36,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:41,545 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc126.base_11| (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~argv~0.offset))) (and (bvule c_ULTIMATE.start_main_~argv~0.offset .cse0) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc126.base_11| (_ bv11 32)) c_ULTIMATE.start_main_~argv~0.base)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc126.base_11|)))))))) is different from false [2021-10-13 07:28:41,589 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 07:28:41,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 07:28:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:42,108 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:42,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721374762] [2021-10-13 07:28:42,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721374762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:42,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:42,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 07:28:42,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298426068] [2021-10-13 07:28:42,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 07:28:42,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 07:28:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=118, Unknown=2, NotChecked=22, Total=182 [2021-10-13 07:28:42,111 INFO L87 Difference]: Start difference. First operand 141 states and 159 transitions. Second operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:53,170 WARN L207 SmtUtils]: Spent 8.56 s on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2021-10-13 07:28:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:55,070 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2021-10-13 07:28:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:28:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 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 52 [2021-10-13 07:28:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:55,073 INFO L225 Difference]: With dead ends: 182 [2021-10-13 07:28:55,073 INFO L226 Difference]: Without dead ends: 182 [2021-10-13 07:28:55,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 14976.5ms TimeCoverageRelationStatistics Valid=103, Invalid=241, Unknown=2, NotChecked=34, Total=380 [2021-10-13 07:28:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-13 07:28:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 122. [2021-10-13 07:28:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 121 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2021-10-13 07:28:55,092 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 52 [2021-10-13 07:28:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:55,092 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2021-10-13 07:28:55,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:55,093 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2021-10-13 07:28:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 07:28:55,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:55,100 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:55,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:55,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:55,318 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:55,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:55,319 INFO L82 PathProgramCache]: Analyzing trace with hash -328933539, now seen corresponding path program 1 times [2021-10-13 07:28:55,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:55,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537934146] [2021-10-13 07:28:55,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:55,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:55,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:55,321 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:55,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 07:28:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:55,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:28:55,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:56,041 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:28:56,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-13 07:28:56,122 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:28:56,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-13 07:28:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:56,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:56,329 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:56,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537934146] [2021-10-13 07:28:56,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537934146] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:56,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:56,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:28:56,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486412836] [2021-10-13 07:28:56,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:28:56,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:28:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:56,331 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:56,486 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2021-10-13 07:28:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:28:56,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 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 55 [2021-10-13 07:28:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:56,488 INFO L225 Difference]: With dead ends: 129 [2021-10-13 07:28:56,488 INFO L226 Difference]: Without dead ends: 129 [2021-10-13 07:28:56,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:28:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-13 07:28:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2021-10-13 07:28:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 125 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 135 transitions. [2021-10-13 07:28:56,498 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 135 transitions. Word has length 55 [2021-10-13 07:28:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:56,499 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 135 transitions. [2021-10-13 07:28:56,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:56,499 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 135 transitions. [2021-10-13 07:28:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-13 07:28:56,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:56,501 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:56,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-13 07:28:56,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:56,704 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:28:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash -328933538, now seen corresponding path program 1 times [2021-10-13 07:28:56,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:56,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79386132] [2021-10-13 07:28:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:56,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:56,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:56,707 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:56,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 07:28:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:28:57,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:57,499 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-10-13 07:28:57,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2021-10-13 07:28:57,534 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:28:57,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 38 [2021-10-13 07:28:58,094 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-10-13 07:28:58,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-13 07:28:58,107 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 07:28:58,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 48 [2021-10-13 07:28:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:28:58,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:29:01,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:01,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79386132] [2021-10-13 07:29:01,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79386132] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:01,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:01,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 07:29:01,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558121281] [2021-10-13 07:29:01,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:29:01,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:29:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=98, Unknown=1, NotChecked=0, Total=132 [2021-10-13 07:29:01,982 INFO L87 Difference]: Start difference. First operand 126 states and 135 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:15,906 WARN L207 SmtUtils]: Spent 9.06 s on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-10-13 07:29:25,093 WARN L207 SmtUtils]: Spent 8.55 s on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2021-10-13 07:29:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:27,055 INFO L93 Difference]: Finished difference Result 252 states and 264 transitions. [2021-10-13 07:29:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:29:27,056 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 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 55 [2021-10-13 07:29:27,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:27,058 INFO L225 Difference]: With dead ends: 252 [2021-10-13 07:29:27,058 INFO L226 Difference]: Without dead ends: 252 [2021-10-13 07:29:27,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 25363.1ms TimeCoverageRelationStatistics Valid=157, Invalid=304, Unknown=1, NotChecked=0, Total=462 [2021-10-13 07:29:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-13 07:29:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 144. [2021-10-13 07:29:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 143 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:27,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2021-10-13 07:29:27,065 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 55 [2021-10-13 07:29:27,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:27,066 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2021-10-13 07:29:27,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2021-10-13 07:29:27,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:29:27,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:27,067 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:27,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:27,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:27,271 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:29:27,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:27,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1856332990, now seen corresponding path program 1 times [2021-10-13 07:29:27,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:27,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783032055] [2021-10-13 07:29:27,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:27,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:27,274 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:27,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 07:29:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:29:27,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:28,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:29:28,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-10-13 07:29:28,286 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-13 07:29:28,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2021-10-13 07:29:28,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-13 07:29:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:29:28,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:30,523 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) |c_ULTIMATE.start_main_#t~mem127.base|)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse0)))))))))) is different from false [2021-10-13 07:29:32,543 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~mem_track~0.base (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse0 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse0))) (select (select (store |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse0) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))) (_ bv1 1)))) is different from false [2021-10-13 07:29:32,678 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:29:32,678 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:32,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783032055] [2021-10-13 07:29:32,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783032055] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:29:32,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:29:32,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-13 07:29:32,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912201380] [2021-10-13 07:29:32,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:29:32,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:29:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:29:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=65, Unknown=2, NotChecked=34, Total=132 [2021-10-13 07:29:32,681 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:29:49,107 WARN L207 SmtUtils]: Spent 14.20 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2021-10-13 07:30:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:03,622 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2021-10-13 07:30:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:30:03,623 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 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 58 [2021-10-13 07:30:03,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:03,624 INFO L225 Difference]: With dead ends: 141 [2021-10-13 07:30:03,625 INFO L226 Difference]: Without dead ends: 141 [2021-10-13 07:30:03,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 28652.2ms TimeCoverageRelationStatistics Valid=51, Invalid=108, Unknown=5, NotChecked=46, Total=210 [2021-10-13 07:30:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-13 07:30:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-10-13 07:30:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.28099173553719) internal successors, (155), 140 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2021-10-13 07:30:03,631 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 58 [2021-10-13 07:30:03,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:03,631 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2021-10-13 07:30:03,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:03,632 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2021-10-13 07:30:03,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-13 07:30:03,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:03,633 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:03,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:03,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:03,840 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:30:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:03,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1856332991, now seen corresponding path program 1 times [2021-10-13 07:30:03,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:03,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1766102921] [2021-10-13 07:30:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:03,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:03,841 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:03,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 07:30:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:30:04,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:04,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-13 07:30:04,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:30:04,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-10-13 07:30:04,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:30:04,831 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:30:04,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 58 [2021-10-13 07:30:04,880 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:30:04,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-10-13 07:30:04,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2021-10-13 07:30:04,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2021-10-13 07:30:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:30:04,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:30:16,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:16,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1766102921] [2021-10-13 07:30:16,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1766102921] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:16,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:16,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-13 07:30:16,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394226920] [2021-10-13 07:30:16,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:30:16,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:30:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2021-10-13 07:30:16,682 INFO L87 Difference]: Start difference. First operand 141 states and 155 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:18,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:18,123 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2021-10-13 07:30:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:30:18,125 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 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 58 [2021-10-13 07:30:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:18,126 INFO L225 Difference]: With dead ends: 140 [2021-10-13 07:30:18,126 INFO L226 Difference]: Without dead ends: 140 [2021-10-13 07:30:18,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 11183.8ms TimeCoverageRelationStatistics Valid=53, Invalid=128, Unknown=1, NotChecked=0, Total=182 [2021-10-13 07:30:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-13 07:30:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-10-13 07:30:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 139 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 153 transitions. [2021-10-13 07:30:18,131 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 153 transitions. Word has length 58 [2021-10-13 07:30:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:18,131 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 153 transitions. [2021-10-13 07:30:18,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 153 transitions. [2021-10-13 07:30:18,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 07:30:18,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:18,133 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:18,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:18,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:18,352 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:30:18,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:18,352 INFO L82 PathProgramCache]: Analyzing trace with hash 534217897, now seen corresponding path program 1 times [2021-10-13 07:30:18,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:18,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295343765] [2021-10-13 07:30:18,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:18,353 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:18,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:18,354 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:18,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 07:30:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:19,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:30:19,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:19,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-13 07:30:19,251 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:30:19,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-13 07:30:19,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 07:30:19,561 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:30:19,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2021-10-13 07:30:19,802 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:30:19,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 42 [2021-10-13 07:30:19,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-10-13 07:30:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:30:20,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:20,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:20,180 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 07:30:30,363 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_1))) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:30:32,412 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse3 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse3))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse3) |ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_1)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:30:46,829 INFO L354 Elim1Store]: treesize reduction 9, result has 81.6 percent of original size [2021-10-13 07:30:46,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 93 treesize of output 124 [2021-10-13 07:30:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:30:47,479 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:47,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295343765] [2021-10-13 07:30:47,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295343765] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:30:47,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:30:47,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [] total 15 [2021-10-13 07:30:47,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682652880] [2021-10-13 07:30:47,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:30:47,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:30:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=137, Unknown=7, NotChecked=50, Total=240 [2021-10-13 07:30:47,480 INFO L87 Difference]: Start difference. First operand 140 states and 153 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:49,565 INFO L93 Difference]: Finished difference Result 163 states and 177 transitions. [2021-10-13 07:30:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:30:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 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 62 [2021-10-13 07:30:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:49,567 INFO L225 Difference]: With dead ends: 163 [2021-10-13 07:30:49,567 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 07:30:49,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 18428.9ms TimeCoverageRelationStatistics Valid=92, Invalid=251, Unknown=7, NotChecked=70, Total=420 [2021-10-13 07:30:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 07:30:49,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 149. [2021-10-13 07:30:49,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.2846153846153847) internal successors, (167), 148 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:49,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2021-10-13 07:30:49,573 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 62 [2021-10-13 07:30:49,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:49,573 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2021-10-13 07:30:49,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:49,573 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2021-10-13 07:30:49,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 07:30:49,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:49,574 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:49,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 07:30:49,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:49,788 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:30:49,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash 534217898, now seen corresponding path program 1 times [2021-10-13 07:30:49,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:49,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133322778] [2021-10-13 07:30:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:49,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:49,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:49,789 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 07:30:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:50,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 07:30:50,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:50,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-10-13 07:30:50,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:30:50,706 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:30:50,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-13 07:30:50,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-13 07:30:50,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:30:50,995 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:30:50,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-10-13 07:30:51,047 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:30:51,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2021-10-13 07:30:51,341 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:30:51,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-13 07:30:51,380 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:30:51,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-13 07:30:51,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2021-10-13 07:30:51,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-10-13 07:30:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:30:51,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:52,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:52,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-13 07:30:52,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:30:52,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-13 07:30:54,407 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32))) (.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) .cse0 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv1 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) .cse0 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule .cse2 (bvadd .cse2 (_ bv1 32)))))) is different from false [2021-10-13 07:30:56,461 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_3)) c_ULTIMATE.start_main_~argv~0.base) .cse2) (_ bv1 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_3))) c_ULTIMATE.start_main_~argv~0.base) .cse5)))) (bvule .cse3 (bvadd .cse3 (_ bv1 32)))))) is different from false [2021-10-13 07:30:58,584 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (let ((.cse0 (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse3 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.offset|))) (.cse2 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.base|)) c_ULTIMATE.start_main_~argv~0.base) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_3)))) c_ULTIMATE.start_main_~argv~0.base) .cse4))))) (bvule .cse0 (bvadd .cse0 (_ bv1 32))))) (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (let ((.cse12 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse9 (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse12))) (let ((.cse11 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse9 |ULTIMATE.start_main_#t~mem127.base|))) (.cse10 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse12))) (let ((.cse7 (select (select .cse11 c_ULTIMATE.start_main_~argv~0.base) .cse10)) (.cse8 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse9 |ULTIMATE.start_main_#t~mem127.offset|)))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 v_DerPreprocessor_3))) c_ULTIMATE.start_main_~argv~0.base) .cse10) (_ bv1 32)) (select |c_#length| (select (select (store .cse11 .cse7 (store (select .cse11 .cse7) .cse8 v_DerPreprocessor_2)) c_ULTIMATE.start_main_~argv~0.base) .cse10))))))))) is different from false [2021-10-13 07:35:14,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:35:14,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133322778] [2021-10-13 07:35:14,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:35:14,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1682364858] [2021-10-13 07:35:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:35:14,484 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:35:14,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:35:14,486 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:35:14,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-10-13 07:35:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:35:16,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 07:35:16,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:35:16,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-13 07:35:16,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:35:16,781 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:35:16,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-13 07:35:16,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:35:16,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-13 07:35:17,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:35:17,381 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-13 07:35:17,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 58 [2021-10-13 07:35:17,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:35:17,421 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-13 07:35:17,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 70 [2021-10-13 07:35:18,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:35:18,333 INFO L354 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2021-10-13 07:35:18,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 97 [2021-10-13 07:35:18,391 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:35:18,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 81 [2021-10-13 07:35:18,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-13 07:35:18,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-13 07:35:18,950 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:35:18,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:35:19,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:19,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-13 07:35:19,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:35:19,144 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-13 07:35:21,176 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule .cse0 (bvadd .cse0 (_ bv1 32))))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32))) (.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem128.base|) .cse1 v_DerPreprocessor_5)) c_ULTIMATE.start_main_~argv~0.base) .cse2) (_ bv1 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) .cse1 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) is different from false [2021-10-13 07:35:23,243 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))) (bvule .cse0 (bvadd (_ bv1 32) .cse0)))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5)) (.cse4 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (_ bv1 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_5)) c_ULTIMATE.start_main_~argv~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse5))))))) is different from false [2021-10-13 07:35:25,358 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse6 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse6))) (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |c_ULTIMATE.start_main_#t~mem127.base|))) (.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse6))) (let ((.cse1 (select (select .cse5 c_ULTIMATE.start_main_~argv~0.base) .cse4)) (.cse2 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (_ bv1 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.offset|)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse4)))))))) (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse7 (let ((.cse12 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse11 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse12))) (select (select (let ((.cse10 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |ULTIMATE.start_main_#t~mem127.offset|))) (.cse9 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |c_ULTIMATE.start_main_#t~mem127.base|)) c_ULTIMATE.start_main_~argv~0.base) .cse11))) (store .cse8 .cse9 (store (select .cse8 .cse9) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5)))) c_ULTIMATE.start_main_~argv~0.base) .cse11))))) (bvule .cse7 (bvadd (_ bv1 32) .cse7))))) is different from false [2021-10-13 07:35:27,463 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32))) (let ((.cse6 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse3 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse6)) (.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse6))) (let ((.cse5 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))))) (let ((.cse1 (select (select .cse5 c_ULTIMATE.start_main_~argv~0.base) .cse4)) (.cse2 (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)))) (bvule (bvadd (_ bv1 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse3 |ULTIMATE.start_main_#t~mem127.offset|)))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_DerPreprocessor_5))) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store .cse5 .cse1 (store (select .cse5 .cse1) .cse2 v_DerPreprocessor_4)) c_ULTIMATE.start_main_~argv~0.base) .cse4)))))))) (forall ((|ULTIMATE.start_main_#t~mem127.offset| (_ BitVec 32)) (v_DerPreprocessor_5 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32))) (let ((.cse7 (let ((.cse12 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse11 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse12))) (select (select (let ((.cse10 (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 |ULTIMATE.start_main_#t~mem127.offset|))) (.cse9 (select (select (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) .cse10 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse11))) c_ULTIMATE.start_main_~argv~0.base) .cse11))) (store .cse8 .cse9 (store (select .cse8 .cse9) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_5)))) c_ULTIMATE.start_main_~argv~0.base) .cse11))))) (bvule .cse7 (bvadd (_ bv1 32) .cse7))))) is different from false [2021-10-13 07:35:34,665 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-10-13 07:35:34,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-10-13 07:35:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:35:34,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1682364858] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:35:34,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:35:34,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 22 [2021-10-13 07:35:34,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459411410] [2021-10-13 07:35:34,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 07:35:34,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:35:34,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 07:35:34,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=541, Unknown=7, NotChecked=378, Total=1056 [2021-10-13 07:35:34,834 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:36:07,387 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2021-10-13 07:36:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:36:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 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 62 [2021-10-13 07:36:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:36:07,390 INFO L225 Difference]: With dead ends: 150 [2021-10-13 07:36:07,390 INFO L226 Difference]: Without dead ends: 150 [2021-10-13 07:36:07,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 41941.3ms TimeCoverageRelationStatistics Valid=219, Invalid=852, Unknown=13, NotChecked=476, Total=1560 [2021-10-13 07:36:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-13 07:36:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-10-13 07:36:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.2692307692307692) internal successors, (165), 148 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 165 transitions. [2021-10-13 07:36:07,397 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 165 transitions. Word has length 62 [2021-10-13 07:36:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:36:07,397 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 165 transitions. [2021-10-13 07:36:07,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:36:07,398 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 165 transitions. [2021-10-13 07:36:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 07:36:07,399 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:36:07,399 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:36:07,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 07:36:07,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-10-13 07:36:07,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:36:07,812 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:36:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:36:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1858298017, now seen corresponding path program 1 times [2021-10-13 07:36:07,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:36:07,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401015120] [2021-10-13 07:36:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:36:07,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:36:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:36:07,814 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:36:07,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 07:36:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:36:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:36:08,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:36:08,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-13 07:36:08,925 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:36:08,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-13 07:36:08,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 07:36:09,159 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:36:09,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 40 [2021-10-13 07:36:09,356 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:36:09,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 43 [2021-10-13 07:36:09,538 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:36:09,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 43 [2021-10-13 07:36:09,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2021-10-13 07:36:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-10-13 07:36:09,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:36:09,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:09,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:36:18,102 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:36:18,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:36:18,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 96 [2021-10-13 07:36:20,168 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_7)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-10-13 07:36:22,197 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_7))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:36:24,256 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_7)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_6)))) c_ULTIMATE.start_main_~argv~0.base) .cse2))))))))))))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:37:18,555 INFO L354 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2021-10-13 07:37:18,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 65 [2021-10-13 07:37:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2021-10-13 07:37:18,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:37:18,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401015120] [2021-10-13 07:37:18,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401015120] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:18,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [733670653] [2021-10-13 07:37:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:18,650 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:37:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:37:18,663 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:37:18,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-10-13 07:37:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:20,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:37:20,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:20,899 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:37:20,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-10-13 07:37:21,246 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:37:21,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-13 07:37:21,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 07:37:21,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:37:21,781 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-13 07:37:21,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 37 [2021-10-13 07:37:22,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:37:22,524 INFO L354 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2021-10-13 07:37:22,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 74 [2021-10-13 07:37:22,954 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:37:22,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 51 [2021-10-13 07:37:23,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-13 07:37:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-10-13 07:37:23,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:23,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:23,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:37:25,362 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_8)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:37:27,381 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_8))) c_ULTIMATE.start_main_~argv~0.base) .cse1))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:37:27,420 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:27,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-10-13 07:37:29,439 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9)))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_8)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:37:45,813 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse5) |c_ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_8)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))) (_ bv1 1)))) is different from false [2021-10-13 07:37:47,855 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (select (select (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd c_ULTIMATE.start_main_~mem_track~0.offset .cse5) (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_9)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_8)))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))))))))))))))))) is different from false [2021-10-13 07:37:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 3 not checked. [2021-10-13 07:37:51,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [733670653] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:37:51,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591787542] [2021-10-13 07:37:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:37:51,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:37:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:51,250 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:37:51,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 07:37:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:37:52,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:37:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:37:52,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-10-13 07:37:52,171 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:37:52,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-10-13 07:37:52,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-10-13 07:37:52,446 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:37:52,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-10-13 07:37:56,680 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:37:56,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 34 [2021-10-13 07:37:56,875 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:37:56,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 43 [2021-10-13 07:37:59,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2021-10-13 07:37:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:37:59,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:37:59,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:37:59,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-13 07:37:59,160 INFO L354 Elim1Store]: treesize reduction 5, result has 80.8 percent of original size [2021-10-13 07:37:59,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2021-10-13 07:38:01,176 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) |c_ULTIMATE.start_main_#t~mem130.base|)) is different from false [2021-10-13 07:38:03,194 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) is different from false [2021-10-13 07:38:03,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:03,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-13 07:38:05,285 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem128.base|) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_11))) (.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select .cse1 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 (store (select .cse1 .cse0) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse2))))) is different from false [2021-10-13 07:38:13,954 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~mem127.base| (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem128.offset| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (ULTIMATE.start_main_~j~0 (_ BitVec 32)) (ULTIMATE.start_main_~mem_track~0.offset (_ BitVec 32)) (v_DerPreprocessor_11 (_ BitVec 32))) (let ((.cse5 (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset .cse5))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~mem_track~0.base) (bvadd ULTIMATE.start_main_~mem_track~0.offset .cse5) |ULTIMATE.start_main_#t~mem127.base|)))) (let ((.cse4 (select (select .cse3 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store .cse3 .cse4 (store (select .cse3 .cse4) (bvadd |ULTIMATE.start_main_#t~mem128.offset| (_ bv10 32)) v_DerPreprocessor_11)))))) (let ((.cse1 (select (select .cse0 c_ULTIMATE.start_main_~argv~0.base) .cse2))) (= (select (select (store .cse0 .cse1 (store (select .cse0 .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| ULTIMATE.start_main_~j~0) v_DerPreprocessor_10)) c_ULTIMATE.start_main_~argv~0.base) .cse2) .cse1)))))) is different from false [2021-10-13 07:38:16,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:38:16,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 07:38:16,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13, 11] total 37 [2021-10-13 07:38:16,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526229022] [2021-10-13 07:38:16,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-13 07:38:16,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-13 07:38:16,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1006, Unknown=27, NotChecked=1040, Total=2352 [2021-10-13 07:38:16,407 INFO L87 Difference]: Start difference. First operand 149 states and 165 transitions. Second operand has 38 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 38 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:26,065 WARN L207 SmtUtils]: Spent 6.79 s on a formula simplification. DAG size of input: 125 DAG size of output: 79 [2021-10-13 07:38:41,170 WARN L207 SmtUtils]: Spent 6.50 s on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2021-10-13 07:38:48,081 WARN L207 SmtUtils]: Spent 6.44 s on a formula simplification. DAG size of input: 116 DAG size of output: 77 [2021-10-13 07:38:55,544 WARN L207 SmtUtils]: Spent 6.50 s on a formula simplification. DAG size of input: 104 DAG size of output: 62 [2021-10-13 07:39:02,874 WARN L207 SmtUtils]: Spent 6.58 s on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2021-10-13 07:39:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:39:07,976 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2021-10-13 07:39:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 07:39:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 38 states have internal predecessors, (88), 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 67 [2021-10-13 07:39:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:39:07,978 INFO L225 Difference]: With dead ends: 158 [2021-10-13 07:39:07,978 INFO L226 Difference]: Without dead ends: 158 [2021-10-13 07:39:07,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 296 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 13 IntricatePredicates, 2 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 113726.1ms TimeCoverageRelationStatistics Valid=612, Invalid=1861, Unknown=29, NotChecked=1404, Total=3906 [2021-10-13 07:39:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-13 07:39:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-13 07:39:07,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 144 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2021-10-13 07:39:07,984 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 67 [2021-10-13 07:39:07,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:39:07,984 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2021-10-13 07:39:07,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.3783783783783785) internal successors, (88), 38 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:39:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2021-10-13 07:39:07,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-13 07:39:07,986 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:39:07,986 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:39:08,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:08,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-13 07:39:08,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:08,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:08,587 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 33 more)] === [2021-10-13 07:39:08,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:39:08,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1858298016, now seen corresponding path program 1 times [2021-10-13 07:39:08,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:39:08,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944208137] [2021-10-13 07:39:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:08,588 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:39:08,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:39:08,589 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:39:08,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 07:39:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:09,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:39:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:09,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-10-13 07:39:09,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:39:09,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:39:09,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-13 07:39:09,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:39:09,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-13 07:39:09,972 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:39:09,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 70 [2021-10-13 07:39:10,009 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:39:10,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 47 [2021-10-13 07:39:10,202 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:39:10,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-13 07:39:10,233 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:39:10,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-13 07:39:10,490 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:39:10,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-13 07:39:10,527 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:39:10,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-13 07:39:10,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2021-10-13 07:39:10,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-10-13 07:39:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:39:10,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:11,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:11,387 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-13 07:39:11,390 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:11,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-13 07:39:13,428 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0)) (.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv2 32) c_ULTIMATE.start_main_~j~0) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_13)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule (bvadd .cse2 c_ULTIMATE.start_main_~j~0 (_ bv1 32)) (bvadd .cse2 (_ bv2 32) c_ULTIMATE.start_main_~j~0))))) is different from false [2021-10-13 07:39:15,510 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_12))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))) (bvule (bvadd c_ULTIMATE.start_main_~j~0 (_ bv1 32) .cse0) (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5)) (.cse4 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0))) (bvule (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse5)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_13)) c_ULTIMATE.start_main_~argv~0.base) .cse5))))))) is different from false [2021-10-13 07:39:17,610 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse0 (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2))) (store |c_#memory_$Pointer$.offset| .cse1 (store (select |c_#memory_$Pointer$.offset| .cse1) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_12))) c_ULTIMATE.start_main_~argv~0.base) .cse2)))) (bvule (bvadd (_ bv1 32) .cse0) (bvadd (_ bv2 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_12 (_ BitVec 32))) (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))) (bvule (bvadd (_ bv2 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_12)) c_ULTIMATE.start_main_~argv~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_13)) c_ULTIMATE.start_main_~argv~0.base) .cse4))))))) is different from false [2021-10-13 07:39:17,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:17,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-13 07:39:17,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:17,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-13 07:39:17,678 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:39:17,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944208137] [2021-10-13 07:39:17,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_12 [2021-10-13 07:39:17,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1523291314] [2021-10-13 07:39:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:17,678 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:39:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:39:17,679 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:39:17,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2021-10-13 07:39:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:19,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 07:39:19,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:19,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-10-13 07:39:19,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:39:19,885 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:39:19,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-10-13 07:39:20,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-13 07:39:20,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:39:20,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:39:20,536 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-13 07:39:20,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 58 [2021-10-13 07:39:20,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:39:20,561 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-10-13 07:39:20,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 66 [2021-10-13 07:39:21,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:39:21,246 INFO L354 Elim1Store]: treesize reduction 82, result has 28.7 percent of original size [2021-10-13 07:39:21,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 97 [2021-10-13 07:39:21,277 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:39:21,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 81 [2021-10-13 07:39:21,793 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:39:21,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-13 07:39:21,814 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:39:21,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-13 07:39:22,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-10-13 07:39:22,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-10-13 07:39:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:39:22,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:22,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:22,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-13 07:39:22,249 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:22,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-13 07:39:24,284 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule (bvadd c_ULTIMATE.start_main_~j~0 .cse0 (_ bv1 32)) (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0)) (.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) .cse1 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) .cse1 v_DerPreprocessor_17)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) is different from false [2021-10-13 07:39:26,363 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0))) (bvule (bvadd (_ bv2 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) .cse2) c_ULTIMATE.start_main_~j~0) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_17)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_16))) c_ULTIMATE.start_main_~argv~0.base) .cse5)))) (bvule (bvadd .cse3 c_ULTIMATE.start_main_~j~0 (_ bv1 32)) (bvadd (_ bv2 32) .cse3 c_ULTIMATE.start_main_~j~0))))) is different from false [2021-10-13 07:39:28,459 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (bvule (bvadd (_ bv2 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_16)) c_ULTIMATE.start_main_~argv~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_17)) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))) (forall ((|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse2 (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_16))) c_ULTIMATE.start_main_~argv~0.base) .cse4)))) (bvule (bvadd (_ bv1 32) .cse2) (bvadd (_ bv2 32) .cse2))))) is different from false [2021-10-13 07:39:28,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:28,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-13 07:39:28,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:28,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-13 07:39:28,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_16 [2021-10-13 07:39:28,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268398441] [2021-10-13 07:39:28,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:39:28,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:39:28,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:39:28,560 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:39:28,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-13 07:39:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:39:29,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:39:29,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:39:29,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-10-13 07:39:29,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:39:29,596 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:39:29,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-10-13 07:39:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 07:39:29,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-10-13 07:39:29,773 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:39:29,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2021-10-13 07:39:29,808 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-10-13 07:39:29,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2021-10-13 07:39:29,917 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:39:29,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-13 07:39:29,950 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:39:29,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-13 07:39:30,095 INFO L354 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2021-10-13 07:39:30,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 69 [2021-10-13 07:39:30,122 INFO L354 Elim1Store]: treesize reduction 71, result has 13.4 percent of original size [2021-10-13 07:39:30,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 40 [2021-10-13 07:39:30,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2021-10-13 07:39:30,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 16 [2021-10-13 07:39:30,251 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 07:39:30,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:39:30,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:30,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-13 07:39:30,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:30,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-13 07:39:32,486 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0)) (.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (bvule (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem130.base|) .cse0 v_DerPreprocessor_21)) c_ULTIMATE.start_main_~argv~0.base) .cse1))))) (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem130.base|) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32)))))) (bvule (bvadd c_ULTIMATE.start_main_~j~0 .cse2 (_ bv1 32)) (bvadd (_ bv2 32) c_ULTIMATE.start_main_~j~0 .cse2))))) is different from false [2021-10-13 07:39:34,551 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse2 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse2)) (.cse1 (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse1 v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) .cse2) (_ bv2 32) c_ULTIMATE.start_main_~j~0) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse1 v_DerPreprocessor_21)) c_ULTIMATE.start_main_~argv~0.base) .cse2)))))) (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse3 (let ((.cse5 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse5))) (store |c_#memory_$Pointer$.offset| .cse4 (store (select |c_#memory_$Pointer$.offset| .cse4) (bvadd |ULTIMATE.start_main_#t~mem130.offset| c_ULTIMATE.start_main_~j~0) v_DerPreprocessor_20))) c_ULTIMATE.start_main_~argv~0.base) .cse5)))) (bvule (bvadd .cse3 c_ULTIMATE.start_main_~j~0 (_ bv1 32)) (bvadd .cse3 (_ bv2 32) c_ULTIMATE.start_main_~j~0))))) is different from false [2021-10-13 07:39:36,643 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse1 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse1))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_20)) c_ULTIMATE.start_main_~argv~0.base) .cse1) (_ bv2 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_21)) c_ULTIMATE.start_main_~argv~0.base) .cse1)))))) (forall ((v_DerPreprocessor_20 (_ BitVec 32)) (|ULTIMATE.start_main_#t~mem130.offset| (_ BitVec 32))) (let ((.cse2 (let ((.cse4 (bvadd c_ULTIMATE.start_main_~argv~0.offset (bvmul c_ULTIMATE.start_main_~i~4 (_ bv8 32))))) (select (select (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~argv~0.base) .cse4))) (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) |ULTIMATE.start_main_#t~mem130.offset| v_DerPreprocessor_20))) c_ULTIMATE.start_main_~argv~0.base) .cse4)))) (bvule (bvadd .cse2 (_ bv1 32)) (bvadd .cse2 (_ bv2 32)))))) is different from false [2021-10-13 07:39:36,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:36,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 264 [2021-10-13 07:39:36,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:39:36,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 303 [2021-10-13 07:39:36,708 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_DerPreprocessor_20 [2021-10-13 07:39:36,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:39:36,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:39:36,708 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:39:36,708 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:39:36,715 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 07:39:36,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:39:36,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:39:36,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:39:36,717 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:39:36,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 07:39:36,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 07:39:36,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 07:39:36,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 07:39:36,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 07:39:36,718 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 07:39:36,719 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:39:36,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:39:36,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2021-10-13 07:39:36,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-13 07:39:37,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-13 07:39:37,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3897140-8346-433c-a05f-d4a289148b9f/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:39:37,333 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:39:37,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:39:37 BoogieIcfgContainer [2021-10-13 07:39:37,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:39:37,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:39:37,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:39:37,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:39:37,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:18" (3/4) ... [2021-10-13 07:39:37,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:39:37,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:39:37,354 INFO L168 Benchmark]: Toolchain (without parser) took 681875.19 ms. Allocated memory was 65.0 MB in the beginning and 323.0 MB in the end (delta: 257.9 MB). Free memory was 39.9 MB in the beginning and 185.3 MB in the end (delta: -145.4 MB). Peak memory consumption was 112.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:37,355 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 44.9 MB in the end (delta: 50.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:39:37,355 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1546.62 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 39.8 MB in the beginning and 52.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:37,355 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.75 ms. Allocated memory is still 83.9 MB. Free memory was 52.3 MB in the beginning and 48.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:37,356 INFO L168 Benchmark]: Boogie Preprocessor took 75.48 ms. Allocated memory is still 83.9 MB. Free memory was 48.4 MB in the beginning and 45.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:37,356 INFO L168 Benchmark]: RCFGBuilder took 1091.91 ms. Allocated memory is still 83.9 MB. Free memory was 45.2 MB in the beginning and 39.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:37,357 INFO L168 Benchmark]: TraceAbstraction took 679045.18 ms. Allocated memory was 83.9 MB in the beginning and 323.0 MB in the end (delta: 239.1 MB). Free memory was 39.1 MB in the beginning and 185.3 MB in the end (delta: -146.3 MB). Peak memory consumption was 92.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:39:37,357 INFO L168 Benchmark]: Witness Printer took 4.09 ms. Allocated memory is still 323.0 MB. Free memory is still 185.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:39:37,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 44.9 MB in the end (delta: 50.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1546.62 ms. Allocated memory was 65.0 MB in the beginning and 83.9 MB in the end (delta: 18.9 MB). Free memory was 39.8 MB in the beginning and 52.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.75 ms. Allocated memory is still 83.9 MB. Free memory was 52.3 MB in the beginning and 48.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.48 ms. Allocated memory is still 83.9 MB. Free memory was 48.4 MB in the beginning and 45.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1091.91 ms. Allocated memory is still 83.9 MB. Free memory was 45.2 MB in the beginning and 39.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 679045.18 ms. Allocated memory was 83.9 MB in the beginning and 323.0 MB in the end (delta: 239.1 MB). Free memory was 39.1 MB in the beginning and 185.3 MB in the end (delta: -146.3 MB). Peak memory consumption was 92.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.09 ms. Allocated memory is still 323.0 MB. Free memory is still 185.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1895]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1763] static const char *applet_name; [L1764] static signed int bb_errno_location; [L1795] static struct utmp dummy_utmp; [L1877] char *a = malloc(11); [L1878] a[10] = 0 [L1879] int i=0; [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND TRUE i<10 [L1880] a[i]=__VERIFIER_nondet_char() [L1879] ++i [L1879] COND FALSE !(i<10) [L1881] applet_name = a [L1882] bb_errno_location = __VERIFIER_nondet_int() [L1883] optind = 1 [L1884] int argc = __VERIFIER_nondet_int(); [L9] COND FALSE !(!cond) [L1886] char **argv=malloc((argc+1)*sizeof(char*)); [L1887] char **mem_track=malloc((argc+1)*sizeof(char*)); [L1888] argv[argc]=0 [L1889] int i=0; [L1889] COND TRUE i