./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:01,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:01,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:01,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:01,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:01,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:01,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:01,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:01,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:01,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:01,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:01,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:01,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:01,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:01,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:01,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:01,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:01,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:01,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:01,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:01,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:01,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:01,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:01,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:01,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:01,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:01,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:01,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:01,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:01,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:01,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:01,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:01,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:01,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:01,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:01,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:01,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:01,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:01,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:01,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:01,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:01,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:21:01,878 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:01,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:01,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:01,880 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:01,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:01,880 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:01,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:21:01,881 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:01,887 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:01,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:21:01,888 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:21:01,889 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:01,889 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:21:01,889 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:21:01,889 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:21:01,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:01,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:01,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:21:01,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:01,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:01,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:01,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:01,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:01,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:01,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:01,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:01,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:01,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:01,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:01,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:01,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:01,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:01,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:01,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:01,894 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:21:01,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:21:01,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:01,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:01,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:01,895 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_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2021-11-07 02:21:02,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:02,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:02,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:02,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:02,218 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:02,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-07 02:21:02,295 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/9f6345b51/71e98d7ea89d4f3ca9d61dfecf9bf568/FLAG22ac76baa [2021-11-07 02:21:02,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:02,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-07 02:21:02,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/9f6345b51/71e98d7ea89d4f3ca9d61dfecf9bf568/FLAG22ac76baa [2021-11-07 02:21:03,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/9f6345b51/71e98d7ea89d4f3ca9d61dfecf9bf568 [2021-11-07 02:21:03,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:03,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:03,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:03,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:03,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:03,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:03" (1/1) ... [2021-11-07 02:21:03,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21258788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:03, skipping insertion in model container [2021-11-07 02:21:03,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:03" (1/1) ... [2021-11-07 02:21:03,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:03,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:03,681 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-07 02:21:03,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:03,706 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:21:03,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5afabae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:03, skipping insertion in model container [2021-11-07 02:21:03,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:03,707 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:21:03,709 INFO L168 Benchmark]: Toolchain (without parser) took 573.37 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 91.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:03,710 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 60.8 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:21:03,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.81 ms. Allocated memory is still 125.8 MB. Free memory was 89.1 MB in the beginning and 91.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:03,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 60.8 MB in the beginning and 60.8 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 555.81 ms. Allocated memory is still 125.8 MB. Free memory was 89.1 MB in the beginning and 91.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1050]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:05,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:05,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:06,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:06,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:06,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:06,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:06,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:06,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:06,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:06,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:06,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:06,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:06,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:06,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:06,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:06,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:06,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:06,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:06,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:06,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:06,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:06,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:06,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:06,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:06,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:06,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:06,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:06,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:06,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:06,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:06,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:06,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:06,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:06,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:06,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:06,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:06,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:06,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:06,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:06,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:06,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:21:06,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:06,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:06,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:06,122 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:06,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:06,122 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:06,122 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:06,122 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:06,123 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:06,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:06,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:21:06,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:21:06,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:06,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:06,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:06,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:06,125 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:06,125 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:21:06,125 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:21:06,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:21:06,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:06,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:06,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:06,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:06,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:21:06,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:06,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:06,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:06,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:06,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:06,131 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:21:06,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:06,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:06,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:06,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:06,132 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_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa372dfad40872d8fec1a0f5d039a19d9bc91cfd74858ce24ec80eeafb27f017 [2021-11-07 02:21:06,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:06,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:06,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:06,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:06,538 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:06,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-07 02:21:06,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/2b8a665e8/b55e85903a794547af8304ad6bdfe612/FLAG0de65db81 [2021-11-07 02:21:07,297 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:07,298 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c [2021-11-07 02:21:07,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/2b8a665e8/b55e85903a794547af8304ad6bdfe612/FLAG0de65db81 [2021-11-07 02:21:07,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/data/2b8a665e8/b55e85903a794547af8304ad6bdfe612 [2021-11-07 02:21:07,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:07,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:07,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:07,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:07,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:07,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:07" (1/1) ... [2021-11-07 02:21:07,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26565da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:07, skipping insertion in model container [2021-11-07 02:21:07,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:07" (1/1) ... [2021-11-07 02:21:07,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:07,552 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:07,991 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-07 02:21:08,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:08,050 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:21:08,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:08,258 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-07 02:21:08,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:08,281 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:21:08,406 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-1.c[74696,74709] [2021-11-07 02:21:08,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:08,426 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:21:08,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08 WrapperNode [2021-11-07 02:21:08,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:08,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:08,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:21:08,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:21:08,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:08,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:21:08,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:21:08,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:21:08,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:21:08,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:21:08,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:21:08,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:21:08,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (1/1) ... [2021-11-07 02:21:08,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:08,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:08,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:21:08,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:21:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:21:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:21:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:21:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:21:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:21:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:21:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:21:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:21:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:21:08,961 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 02:21:17,786 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-07 02:21:17,786 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-07 02:21:17,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:21:17,798 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 02:21:17,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:17 BoogieIcfgContainer [2021-11-07 02:21:17,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:21:17,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:21:17,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:21:17,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:21:17,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:21:07" (1/3) ... [2021-11-07 02:21:17,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2384f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:17, skipping insertion in model container [2021-11-07 02:21:17,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:08" (2/3) ... [2021-11-07 02:21:17,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d2384f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:21:17, skipping insertion in model container [2021-11-07 02:21:17,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:21:17" (3/3) ... [2021-11-07 02:21:17,809 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-1.c [2021-11-07 02:21:17,814 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:21:17,814 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:21:17,863 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:21:17,869 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:21:17,869 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:21:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 02:21:17,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:17,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:17,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:17,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1630857964, now seen corresponding path program 1 times [2021-11-07 02:21:17,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:17,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478057449] [2021-11-07 02:21:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:17,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:17,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:17,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:17,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:21:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:18,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:18,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:18,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:18,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:18,903 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:18,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478057449] [2021-11-07 02:21:18,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478057449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:18,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:18,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:21:18,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604788447] [2021-11-07 02:21:18,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:18,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:18,937 INFO L87 Difference]: Start difference. First operand has 151 states, 149 states have (on average 1.7181208053691275) internal successors, (256), 150 states have internal predecessors, (256), 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 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:19,192 INFO L93 Difference]: Finished difference Result 566 states and 968 transitions. [2021-11-07 02:21:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:19,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 45 [2021-11-07 02:21:19,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:19,208 INFO L225 Difference]: With dead ends: 566 [2021-11-07 02:21:19,208 INFO L226 Difference]: Without dead ends: 386 [2021-11-07 02:21:19,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-07 02:21:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-07 02:21:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.5298701298701298) internal successors, (589), 385 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 589 transitions. [2021-11-07 02:21:19,276 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 589 transitions. Word has length 45 [2021-11-07 02:21:19,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:19,277 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 589 transitions. [2021-11-07 02:21:19,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:19,278 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 589 transitions. [2021-11-07 02:21:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 02:21:19,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:19,285 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:19,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:21:19,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:19,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1648174202, now seen corresponding path program 1 times [2021-11-07 02:21:19,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:19,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790868386] [2021-11-07 02:21:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:19,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:19,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:19,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:21:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:19,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:19,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:20,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:21:20,656 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:20,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790868386] [2021-11-07 02:21:20,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790868386] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:20,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:20,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:21:20,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933406482] [2021-11-07 02:21:20,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:20,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:20,661 INFO L87 Difference]: Start difference. First operand 386 states and 589 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:21,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:21,891 INFO L93 Difference]: Finished difference Result 883 states and 1363 transitions. [2021-11-07 02:21:21,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 02:21:21,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:21,897 INFO L225 Difference]: With dead ends: 883 [2021-11-07 02:21:21,898 INFO L226 Difference]: Without dead ends: 632 [2021-11-07 02:21:21,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:21,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-07 02:21:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-11-07 02:21:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 631 states have (on average 1.5229793977812995) internal successors, (961), 631 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:21,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 961 transitions. [2021-11-07 02:21:21,943 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 961 transitions. Word has length 107 [2021-11-07 02:21:21,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:21,944 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 961 transitions. [2021-11-07 02:21:21,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:21,945 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 961 transitions. [2021-11-07 02:21:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 02:21:21,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:21,965 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:21,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:22,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:22,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:22,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:22,181 INFO L85 PathProgramCache]: Analyzing trace with hash -980856047, now seen corresponding path program 1 times [2021-11-07 02:21:22,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:22,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624417428] [2021-11-07 02:21:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:22,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:22,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:22,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:22,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:21:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:22,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:22,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:21:23,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-07 02:21:23,768 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:23,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624417428] [2021-11-07 02:21:23,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624417428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:23,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:23,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:21:23,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582835585] [2021-11-07 02:21:23,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:21:23,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:23,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:21:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:21:23,771 INFO L87 Difference]: Start difference. First operand 632 states and 961 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 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) [2021-11-07 02:21:24,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:24,627 INFO L93 Difference]: Finished difference Result 1251 states and 1912 transitions. [2021-11-07 02:21:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:24,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 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) Word has length 172 [2021-11-07 02:21:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:24,633 INFO L225 Difference]: With dead ends: 1251 [2021-11-07 02:21:24,633 INFO L226 Difference]: Without dead ends: 754 [2021-11-07 02:21:24,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:21:24,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-11-07 02:21:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2021-11-07 02:21:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.5179282868525896) internal successors, (1143), 753 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1143 transitions. [2021-11-07 02:21:24,677 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1143 transitions. Word has length 172 [2021-11-07 02:21:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:24,682 INFO L470 AbstractCegarLoop]: Abstraction has 754 states and 1143 transitions. [2021-11-07 02:21:24,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 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) [2021-11-07 02:21:24,684 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1143 transitions. [2021-11-07 02:21:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 02:21:24,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:24,689 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:24,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:24,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:24,905 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:24,906 INFO L85 PathProgramCache]: Analyzing trace with hash -302907374, now seen corresponding path program 1 times [2021-11-07 02:21:24,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:24,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594618054] [2021-11-07 02:21:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:24,910 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:24,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:24,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:24,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:21:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:25,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:25,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-07 02:21:26,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-07 02:21:26,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:26,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594618054] [2021-11-07 02:21:26,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594618054] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:26,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:26,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:21:26,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414327735] [2021-11-07 02:21:26,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:26,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:26,734 INFO L87 Difference]: Start difference. First operand 754 states and 1143 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:27,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:27,203 INFO L93 Difference]: Finished difference Result 1618 states and 2468 transitions. [2021-11-07 02:21:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:27,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 213 [2021-11-07 02:21:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:27,211 INFO L225 Difference]: With dead ends: 1618 [2021-11-07 02:21:27,211 INFO L226 Difference]: Without dead ends: 999 [2021-11-07 02:21:27,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:27,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-07 02:21:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 999. [2021-11-07 02:21:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 998 states have (on average 1.5160320641282565) internal successors, (1513), 998 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1513 transitions. [2021-11-07 02:21:27,256 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1513 transitions. Word has length 213 [2021-11-07 02:21:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:27,256 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1513 transitions. [2021-11-07 02:21:27,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1513 transitions. [2021-11-07 02:21:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-07 02:21:27,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:27,263 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:27,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:27,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:27,479 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1717022423, now seen corresponding path program 1 times [2021-11-07 02:21:27,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:27,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912588176] [2021-11-07 02:21:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:27,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:27,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:27,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:21:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:28,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:28,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-07 02:21:29,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-07 02:21:29,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:29,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912588176] [2021-11-07 02:21:29,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912588176] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:29,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:29,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:21:29,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799178994] [2021-11-07 02:21:29,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:21:29,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:21:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:21:29,778 INFO L87 Difference]: Start difference. First operand 999 states and 1513 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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) [2021-11-07 02:21:30,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:30,332 INFO L93 Difference]: Finished difference Result 1984 states and 3014 transitions. [2021-11-07 02:21:30,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:21:30,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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) Word has length 296 [2021-11-07 02:21:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:30,340 INFO L225 Difference]: With dead ends: 1984 [2021-11-07 02:21:30,340 INFO L226 Difference]: Without dead ends: 1120 [2021-11-07 02:21:30,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 589 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:21:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2021-11-07 02:21:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1120. [2021-11-07 02:21:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.51295799821269) internal successors, (1693), 1119 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1693 transitions. [2021-11-07 02:21:30,384 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1693 transitions. Word has length 296 [2021-11-07 02:21:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:30,385 INFO L470 AbstractCegarLoop]: Abstraction has 1120 states and 1693 transitions. [2021-11-07 02:21:30,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 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) [2021-11-07 02:21:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1693 transitions. [2021-11-07 02:21:30,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-07 02:21:30,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:30,393 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:30,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:30,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:30,612 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:30,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:30,612 INFO L85 PathProgramCache]: Analyzing trace with hash 618226153, now seen corresponding path program 1 times [2021-11-07 02:21:30,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:30,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476784512] [2021-11-07 02:21:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:30,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:30,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:30,619 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:30,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:21:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:31,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:21:31,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-07 02:21:32,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 955 backedges. 652 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-11-07 02:21:33,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:33,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476784512] [2021-11-07 02:21:33,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476784512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:33,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:33,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:21:33,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302121161] [2021-11-07 02:21:33,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:21:33,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:33,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:21:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:33,236 INFO L87 Difference]: Start difference. First operand 1120 states and 1693 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:33,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:21:33,905 INFO L93 Difference]: Finished difference Result 2350 states and 3567 transitions. [2021-11-07 02:21:33,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:21:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 335 [2021-11-07 02:21:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:21:33,915 INFO L225 Difference]: With dead ends: 2350 [2021-11-07 02:21:33,915 INFO L226 Difference]: Without dead ends: 1365 [2021-11-07 02:21:33,917 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:21:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-07 02:21:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2021-11-07 02:21:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.5109970674486803) internal successors, (2061), 1364 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:33,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2061 transitions. [2021-11-07 02:21:33,968 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2061 transitions. Word has length 335 [2021-11-07 02:21:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:21:33,968 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2061 transitions. [2021-11-07 02:21:33,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:21:33,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2061 transitions. [2021-11-07 02:21:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-07 02:21:33,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:21:33,985 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:21:34,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:21:34,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:21:34,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:21:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1430965337, now seen corresponding path program 1 times [2021-11-07 02:21:34,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:21:34,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12739726] [2021-11-07 02:21:34,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:21:34,202 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:21:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:21:34,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:21:34,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:21:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:21:36,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 02:21:36,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:21:36,548 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 13 treesize of output 9 [2021-11-07 02:21:36,560 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 13 treesize of output 9 [2021-11-07 02:21:36,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:36,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 02:21:36,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:36,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-07 02:21:36,752 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 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-07 02:21:37,250 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-07 02:21:37,251 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 8 case distinctions, treesize of input 1289 treesize of output 1241 [2021-11-07 02:21:37,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:37,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 02:21:37,335 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 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-07 02:21:37,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-07 02:21:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:21:37,580 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-07 02:21:37,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:21:37,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:21:37,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-07 02:21:37,644 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 37 treesize of output 25 [2021-11-07 02:21:37,648 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 22 treesize of output 10 [2021-11-07 02:21:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-07 02:21:38,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:21:40,035 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-07 02:21:40,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-07 02:21:40,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-07 02:21:40,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-07 02:21:40,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-07 02:21:40,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-07 02:21:40,260 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-07 02:21:40,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:21:40,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-07 02:21:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2021-11-07 02:21:40,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:21:40,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12739726] [2021-11-07 02:21:40,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12739726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:21:40,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:21:40,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 02:21:40,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148176300] [2021-11-07 02:21:40,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:21:40,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:21:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:21:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:21:40,758 INFO L87 Difference]: Start difference. First operand 1365 states and 2061 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:06,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:06,780 INFO L93 Difference]: Finished difference Result 2727 states and 4118 transitions. [2021-11-07 02:22:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:22:06,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 421 [2021-11-07 02:22:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:06,791 INFO L225 Difference]: With dead ends: 2727 [2021-11-07 02:22:06,791 INFO L226 Difference]: Without dead ends: 1365 [2021-11-07 02:22:06,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 833 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:22:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2021-11-07 02:22:06,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2021-11-07 02:22:06,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1364 states have (on average 1.5102639296187683) internal successors, (2060), 1364 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:06,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 2060 transitions. [2021-11-07 02:22:06,841 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 2060 transitions. Word has length 421 [2021-11-07 02:22:06,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:06,841 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 2060 transitions. [2021-11-07 02:22:06,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 2060 transitions. [2021-11-07 02:22:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-07 02:22:06,846 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:06,847 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:06,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:07,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:07,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:22:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1367846103, now seen corresponding path program 1 times [2021-11-07 02:22:07,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:07,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130865321] [2021-11-07 02:22:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:07,066 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:07,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:07,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:22:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:09,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:22:09,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:09,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:09,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:09,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:22:09,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:09,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:10,003 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-07 02:22:10,004 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 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-07 02:22:10,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:10,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:10,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:22:10,342 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-07 02:22:10,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-07 02:22:12,907 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-07 02:22:12,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-07 02:22:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-07 02:22:13,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 1003 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2021-11-07 02:22:14,635 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:14,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130865321] [2021-11-07 02:22:14,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130865321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:14,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:14,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-07 02:22:14,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612976668] [2021-11-07 02:22:14,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:22:14,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:22:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:14,639 INFO L87 Difference]: Start difference. First operand 1365 states and 2060 transitions. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:00,721 INFO L93 Difference]: Finished difference Result 5999 states and 9087 transitions. [2021-11-07 02:23:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:23:00,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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 421 [2021-11-07 02:23:00,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:00,752 INFO L225 Difference]: With dead ends: 5999 [2021-11-07 02:23:00,752 INFO L226 Difference]: Without dead ends: 4644 [2021-11-07 02:23:00,755 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 834 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:23:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4644 states. [2021-11-07 02:23:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4644 to 1834. [2021-11-07 02:23:00,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 1.5897435897435896) internal successors, (2914), 1833 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:00,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2914 transitions. [2021-11-07 02:23:00,897 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2914 transitions. Word has length 421 [2021-11-07 02:23:00,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:00,898 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2914 transitions. [2021-11-07 02:23:00,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:00,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2914 transitions. [2021-11-07 02:23:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-11-07 02:23:00,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:00,904 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:00,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:01,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:01,132 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:23:01,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:01,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1803946925, now seen corresponding path program 1 times [2021-11-07 02:23:01,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:01,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756076097] [2021-11-07 02:23:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:01,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:01,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:01,136 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:01,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b7c615c-1f6b-4fd1-ad26-0eb74d0cde9b/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:23:08,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:08,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:23:08,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:09,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:09,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:09,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:09,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2021-11-07 02:23:10,059 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 143 treesize of output 131 [2021-11-07 02:23:10,065 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 131 treesize of output 107 [2021-11-07 02:23:10,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:10,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:10,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:11,366 INFO L354 Elim1Store]: treesize reduction 1579, result has 17.5 percent of original size [2021-11-07 02:23:11,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 31 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 107 treesize of output 371 [2021-11-07 02:23:35,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:35,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:35,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 02:23:35,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:35,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:23:36,250 INFO L354 Elim1Store]: treesize reduction 1322, result has 7.7 percent of original size [2021-11-07 02:23:36,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 70 case distinctions, treesize of input 391 treesize of output 509 [2021-11-07 02:24:36,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:24:36,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 105 treesize of output 41 [2021-11-07 02:24:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1565 backedges. 947 proven. 1 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-11-07 02:24:38,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:42,122 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 589 treesize of output 493 [2021-11-07 02:24:42,143 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 493 treesize of output 301