./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/s3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:36:14,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:36:14,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:36:14,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:36:14,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:36:14,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:36:14,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:36:14,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:36:14,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:36:14,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:36:14,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:36:14,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:36:14,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:36:14,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:36:14,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:36:14,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:36:14,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:36:14,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:36:14,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:36:14,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:36:14,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:36:14,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:36:14,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:36:14,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:36:14,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:36:14,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:36:14,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:36:14,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:36:14,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:36:14,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:36:14,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:36:14,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:36:14,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:36:14,972 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:36:14,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:36:14,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:36:14,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:36:14,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:36:14,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:36:14,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:36:14,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:36:14,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:36:15,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:36:15,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:36:15,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:36:15,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:36:15,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:36:15,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:36:15,021 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:36:15,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:36:15,021 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:36:15,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:36:15,026 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:36:15,027 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:36:15,027 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:36:15,027 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:36:15,028 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:36:15,028 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:36:15,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:36:15,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:36:15,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:36:15,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:36:15,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:36:15,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:36:15,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:36:15,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:36:15,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:36:15,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:36:15,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:36:15,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:36:15,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:36:15,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:36:15,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:36:15,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:15,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:36:15,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:36:15,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:36:15,036 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:36:15,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:36:15,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:36:15,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:36:15,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:36:15,037 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-11-12 23:36:15,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:36:15,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:36:15,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:36:15,330 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:36:15,330 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:36:15,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loops/s3.i [2021-11-12 23:36:15,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/34592c051/aa89034f71584efc911d4a1729af355d/FLAG95d88be8e [2021-11-12 23:36:16,008 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:36:16,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/sv-benchmarks/c/loops/s3.i [2021-11-12 23:36:16,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/34592c051/aa89034f71584efc911d4a1729af355d/FLAG95d88be8e [2021-11-12 23:36:16,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/34592c051/aa89034f71584efc911d4a1729af355d [2021-11-12 23:36:16,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:36:16,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:36:16,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:16,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:36:16,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:36:16,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:16" (1/1) ... [2021-11-12 23:36:16,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fea9018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:16, skipping insertion in model container [2021-11-12 23:36:16,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:16" (1/1) ... [2021-11-12 23:36:16,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:36:16,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:36:16,789 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-12 23:36:16,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:16,814 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:36:16,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f544268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:16, skipping insertion in model container [2021-11-12 23:36:16,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:16,828 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:36:16,830 INFO L158 Benchmark]: Toolchain (without parser) took 589.13ms. Allocated memory is still 100.7MB. Free memory was 60.4MB in the beginning and 66.3MB in the end (delta: -5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:36:16,830 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory was 79.4MB in the beginning and 79.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:36:16,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.41ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 66.3MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:36:16,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory was 79.4MB in the beginning and 79.3MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.41ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 66.3MB in the end (delta: -6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/s3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:36:19,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:36:19,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:36:19,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:36:19,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:36:19,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:36:19,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:36:19,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:36:19,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:36:19,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:36:19,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:36:19,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:36:19,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:36:19,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:36:19,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:36:19,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:36:19,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:36:19,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:36:19,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:36:19,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:36:19,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:36:19,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:36:19,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:36:19,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:36:19,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:36:19,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:36:19,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:36:19,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:36:19,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:36:19,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:36:19,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:36:19,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:36:19,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:36:19,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:36:19,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:36:19,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:36:19,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:36:19,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:36:19,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:36:19,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:36:19,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:36:19,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:36:19,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:36:19,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:36:19,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:36:19,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:36:19,202 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:36:19,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:36:19,202 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:36:19,203 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:36:19,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:36:19,203 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:36:19,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:36:19,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:36:19,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:36:19,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:36:19,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:36:19,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:36:19,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:36:19,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:36:19,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:36:19,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:36:19,208 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:36:19,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:36:19,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:36:19,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:36:19,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:36:19,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:36:19,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:36:19,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:19,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:36:19,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:36:19,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:36:19,210 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:36:19,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:36:19,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:36:19,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:36:19,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:36:19,212 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d053be7ac759c4172c4b0b5fbe009ed8f624c0c8659eb750e9996926d5d3b0a1 [2021-11-12 23:36:19,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:36:19,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:36:19,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:36:19,636 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:36:19,637 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:36:19,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loops/s3.i [2021-11-12 23:36:19,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/4d30dfc51/6837fb996790487a9f8aa8e49d2da8bd/FLAGa358e95ed [2021-11-12 23:36:20,336 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:36:20,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/sv-benchmarks/c/loops/s3.i [2021-11-12 23:36:20,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/4d30dfc51/6837fb996790487a9f8aa8e49d2da8bd/FLAGa358e95ed [2021-11-12 23:36:20,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/data/4d30dfc51/6837fb996790487a9f8aa8e49d2da8bd [2021-11-12 23:36:20,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:36:20,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:36:20,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:20,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:36:20,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:36:20,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:20" (1/1) ... [2021-11-12 23:36:20,574 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfe7ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:20, skipping insertion in model container [2021-11-12 23:36:20,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:36:20" (1/1) ... [2021-11-12 23:36:20,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:36:20,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:36:21,122 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-12 23:36:21,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:21,180 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:36:21,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:36:21,365 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-12 23:36:21,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:21,384 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:36:21,532 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_32212fdd-1f25-4833-8960-5ebbc0b5142d/sv-benchmarks/c/loops/s3.i[64167,64180] [2021-11-12 23:36:21,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:36:21,561 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:36:21,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21 WrapperNode [2021-11-12 23:36:21,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:36:21,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:36:21,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:36:21,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:36:21,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:36:21,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:36:21,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:36:21,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:36:21,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:36:21,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:36:21,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:36:21,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:36:21,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (1/1) ... [2021-11-12 23:36:21,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:36:21,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:36:21,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:36:21,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:36:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:36:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:36:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:36:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:36:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:36:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:36:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:36:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:36:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:36:22,101 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-12 23:36:30,727 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-11-12 23:36:30,727 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-11-12 23:36:30,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:36:30,735 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:36:30,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:30 BoogieIcfgContainer [2021-11-12 23:36:30,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:36:30,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:36:30,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:36:30,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:36:30,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:36:20" (1/3) ... [2021-11-12 23:36:30,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343eec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:30, skipping insertion in model container [2021-11-12 23:36:30,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:36:21" (2/3) ... [2021-11-12 23:36:30,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343eec67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:36:30, skipping insertion in model container [2021-11-12 23:36:30,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:30" (3/3) ... [2021-11-12 23:36:30,746 INFO L111 eAbstractionObserver]: Analyzing ICFG s3.i [2021-11-12 23:36:30,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:36:30,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:36:30,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:36:30,807 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:36:30,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:36:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:36:30,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:30,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:36:30,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1457703967, now seen corresponding path program 1 times [2021-11-12 23:36:30,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:36:30,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553585171] [2021-11-12 23:36:30,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:30,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:36:30,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:36:30,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:36:30,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:36:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:31,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:36:31,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:31,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:31,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:36:31,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553585171] [2021-11-12 23:36:31,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553585171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:31,668 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:31,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:36:31,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700822467] [2021-11-12 23:36:31,671 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:31,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:36:31,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:36:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:36:31,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:36:31,716 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.689922480620155) internal successors, (218), 130 states have internal predecessors, (218), 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 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:31,911 INFO L93 Difference]: Finished difference Result 375 states and 626 transitions. [2021-11-12 23:36:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:36:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 24 [2021-11-12 23:36:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:31,931 INFO L225 Difference]: With dead ends: 375 [2021-11-12 23:36:31,931 INFO L226 Difference]: Without dead ends: 217 [2021-11-12 23:36:31,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:36:31,943 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 363 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.19ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:31,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 397 Invalid, 32 Unknown, 0 Unchecked, 14.19ms Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 78.90ms Time] [2021-11-12 23:36:31,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-12 23:36:32,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-12 23:36:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.4814814814814814) internal successors, (320), 216 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 320 transitions. [2021-11-12 23:36:32,027 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 320 transitions. Word has length 24 [2021-11-12 23:36:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:32,028 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 320 transitions. [2021-11-12 23:36:32,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 320 transitions. [2021-11-12 23:36:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-12 23:36:32,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:32,034 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-12 23:36:32,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:36:32,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:36:32,250 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:32,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1495258694, now seen corresponding path program 1 times [2021-11-12 23:36:32,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:36:32,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078356139] [2021-11-12 23:36:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:32,253 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:36:32,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:36:32,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:36:32,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:36:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:32,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:36:32,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:32,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:36:33,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:36:33,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078356139] [2021-11-12 23:36:33,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078356139] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:33,038 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:33,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:36:33,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770413953] [2021-11-12 23:36:33,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:33,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:36:33,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:36:33,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:36:33,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:36:33,041 INFO L87 Difference]: Start difference. First operand 217 states and 320 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:35,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:36:35,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:35,310 INFO L93 Difference]: Finished difference Result 628 states and 933 transitions. [2021-11-12 23:36:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:36:35,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 41 [2021-11-12 23:36:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:35,315 INFO L225 Difference]: With dead ends: 628 [2021-11-12 23:36:35,315 INFO L226 Difference]: Without dead ends: 521 [2021-11-12 23:36:35,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:36:35,318 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 252 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2193.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.31ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2235.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:35,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 762 Invalid, 43 Unknown, 0 Unchecked, 5.31ms Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 2235.60ms Time] [2021-11-12 23:36:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-11-12 23:36:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 421. [2021-11-12 23:36:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 1.480952380952381) internal successors, (622), 420 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:35,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 622 transitions. [2021-11-12 23:36:35,371 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 622 transitions. Word has length 41 [2021-11-12 23:36:35,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:35,372 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 622 transitions. [2021-11-12 23:36:35,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:35,372 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 622 transitions. [2021-11-12 23:36:35,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:36:35,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:35,377 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-12 23:36:35,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:36:35,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:36:35,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 924360661, now seen corresponding path program 1 times [2021-11-12 23:36:35,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:36:35,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127075497] [2021-11-12 23:36:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:35,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:36:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:36:35,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:36:35,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:36:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:35,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:36:35,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:36:36,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-12 23:36:36,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:36:36,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127075497] [2021-11-12 23:36:36,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127075497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:36,592 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:36,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:36:36,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476351401] [2021-11-12 23:36:36,593 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:36,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:36:36,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:36:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:36:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:36:36,594 INFO L87 Difference]: Start difference. First operand 421 states and 622 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:38,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:36:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:36:38,767 INFO L93 Difference]: Finished difference Result 939 states and 1394 transitions. [2021-11-12 23:36:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:36:38,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-12 23:36:38,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:36:38,772 INFO L225 Difference]: With dead ends: 939 [2021-11-12 23:36:38,772 INFO L226 Difference]: Without dead ends: 628 [2021-11-12 23:36:38,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:36:38,776 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 273 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2116.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.52ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2137.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:36:38,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 609 Invalid, 39 Unknown, 0 Unchecked, 3.52ms Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 2137.64ms Time] [2021-11-12 23:36:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-12 23:36:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-11-12 23:36:38,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.4784688995215312) internal successors, (927), 627 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:38,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 927 transitions. [2021-11-12 23:36:38,852 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 927 transitions. Word has length 80 [2021-11-12 23:36:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:36:38,853 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 927 transitions. [2021-11-12 23:36:38,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:36:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 927 transitions. [2021-11-12 23:36:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:36:38,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:36:38,858 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2021-11-12 23:36:38,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:36:39,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:36:39,058 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:36:39,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:36:39,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1855651051, now seen corresponding path program 1 times [2021-11-12 23:36:39,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:36:39,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866092446] [2021-11-12 23:36:39,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:36:39,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:36:39,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:36:39,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:36:39,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:36:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:36:39,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:36:39,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:36:39,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:39,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:39,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:39,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:39,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:36:39,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:36:39,871 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-12 23:36:39,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-12 23:36:39,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:36:39,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:36:39,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:36:40,439 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-12 23:36:40,439 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 72 treesize of output 89 [2021-11-12 23:36:41,971 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:36:41,972 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 110 treesize of output 38 [2021-11-12 23:36:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:36:42,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:36:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-12 23:36:42,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:36:42,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866092446] [2021-11-12 23:36:42,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866092446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:36:42,752 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:36:42,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 23:36:42,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505554175] [2021-11-12 23:36:42,752 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:36:42,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:36:42,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:36:42,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:36:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:36:42,754 INFO L87 Difference]: Start difference. First operand 628 states and 927 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2021-11-12 23:36:44,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:36:46,821 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:36:48,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:36:50,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:36:58,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:07,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:09,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:11,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:14,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:19,212 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:21,768 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:23,693 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:31,025 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:37:35,940 INFO L93 Difference]: Finished difference Result 2264 states and 3359 transitions. [2021-11-12 23:37:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:37:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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 100 [2021-11-12 23:37:35,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:37:35,960 INFO L225 Difference]: With dead ends: 2264 [2021-11-12 23:37:35,961 INFO L226 Difference]: Without dead ends: 1643 [2021-11-12 23:37:35,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 192 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:37:35,963 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 227 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 57 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51836.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.87ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52945.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:37:35,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 745 Invalid, 759 Unknown, 0 Unchecked, 9.87ms Time], IncrementalHoareTripleChecker [57 Valid, 698 Invalid, 4 Unknown, 0 Unchecked, 52945.65ms Time] [2021-11-12 23:37:35,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-12 23:37:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 753. [2021-11-12 23:37:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 752 states have (on average 1.5106382978723405) internal successors, (1136), 752 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:37:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1136 transitions. [2021-11-12 23:37:36,037 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1136 transitions. Word has length 100 [2021-11-12 23:37:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:37:36,038 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1136 transitions. [2021-11-12 23:37:36,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 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) [2021-11-12 23:37:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1136 transitions. [2021-11-12 23:37:36,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-12 23:37:36,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:37:36,045 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2021-11-12 23:37:36,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:37:36,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:37:36,262 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:37:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:37:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1223162519, now seen corresponding path program 1 times [2021-11-12 23:37:36,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:37:36,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680781466] [2021-11-12 23:37:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:37:36,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:37:36,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:37:36,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:37:36,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:37:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:37:36,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:37:36,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:37:36,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:37:36,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:37:36,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:37:36,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:37:36,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:37:36,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:37:37,459 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:37:37,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:37:39,384 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:37:39,384 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 107 treesize of output 35 [2021-11-12 23:37:39,438 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:37:39,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:37:39,811 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:37:39,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:37:39,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680781466] [2021-11-12 23:37:39,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680781466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:37:39,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:37:39,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:37:39,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246013287] [2021-11-12 23:37:39,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:37:39,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:37:39,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:37:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:37:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:37:39,814 INFO L87 Difference]: Start difference. First operand 753 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:37:41,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:43,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:45,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:52,360 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:37:57,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:01,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:02,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:38:02,814 INFO L93 Difference]: Finished difference Result 1757 states and 2634 transitions. [2021-11-12 23:38:02,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:38:02,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 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 100 [2021-11-12 23:38:02,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:38:02,827 INFO L225 Difference]: With dead ends: 1757 [2021-11-12 23:38:02,828 INFO L226 Difference]: Without dead ends: 1011 [2021-11-12 23:38:02,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:38:02,830 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 45 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22384.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22835.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:38:02,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 592 Invalid, 255 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [6 Valid, 246 Invalid, 3 Unknown, 0 Unchecked, 22835.46ms Time] [2021-11-12 23:38:02,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-12 23:38:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 873. [2021-11-12 23:38:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 1.5378440366972477) internal successors, (1341), 872 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:38:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1341 transitions. [2021-11-12 23:38:02,880 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1341 transitions. Word has length 100 [2021-11-12 23:38:02,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:38:02,880 INFO L470 AbstractCegarLoop]: Abstraction has 873 states and 1341 transitions. [2021-11-12 23:38:02,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:38:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1341 transitions. [2021-11-12 23:38:02,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 23:38:02,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:38:02,883 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1] [2021-11-12 23:38:02,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:38:03,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:38:03,100 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:38:03,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:38:03,100 INFO L85 PathProgramCache]: Analyzing trace with hash -517718612, now seen corresponding path program 1 times [2021-11-12 23:38:03,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:38:03,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99521925] [2021-11-12 23:38:03,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:38:03,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:38:03,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:38:03,102 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:38:03,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:38:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:38:04,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:38:04,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:38:04,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:04,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:04,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:04,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:04,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:04,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:04,713 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:38:04,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:38:05,339 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:38:05,340 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 107 treesize of output 35 [2021-11-12 23:38:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:38:05,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:38:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:38:05,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:38:05,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99521925] [2021-11-12 23:38:05,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99521925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:38:05,872 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:38:05,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:38:05,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187162896] [2021-11-12 23:38:05,872 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:38:05,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:38:05,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:38:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:38:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:38:05,873 INFO L87 Difference]: Start difference. First operand 873 states and 1341 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:38:07,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:09,931 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:11,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:13,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:19,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:24,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:26,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:27,808 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:37,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:38:41,321 INFO L93 Difference]: Finished difference Result 2405 states and 3628 transitions. [2021-11-12 23:38:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:38:41,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-12 23:38:41,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:38:41,333 INFO L225 Difference]: With dead ends: 2405 [2021-11-12 23:38:41,334 INFO L226 Difference]: Without dead ends: 1539 [2021-11-12 23:38:41,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:38:41,336 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 170 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 40 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34446.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.25ms SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35230.58ms IncrementalHoareTripleChecker+Time [2021-11-12 23:38:41,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 948 Invalid, 571 Unknown, 0 Unchecked, 7.25ms Time], IncrementalHoareTripleChecker [40 Valid, 527 Invalid, 4 Unknown, 0 Unchecked, 35230.58ms Time] [2021-11-12 23:38:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-11-12 23:38:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 931. [2021-11-12 23:38:41,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 930 states have (on average 1.5204301075268818) internal successors, (1414), 930 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:38:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1414 transitions. [2021-11-12 23:38:41,394 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1414 transitions. Word has length 115 [2021-11-12 23:38:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:38:41,394 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1414 transitions. [2021-11-12 23:38:41,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:38:41,395 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1414 transitions. [2021-11-12 23:38:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 23:38:41,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:38:41,398 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1] [2021-11-12 23:38:41,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:38:41,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:38:41,607 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:38:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:38:41,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1265744566, now seen corresponding path program 1 times [2021-11-12 23:38:41,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:38:41,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074213575] [2021-11-12 23:38:41,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:38:41,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:38:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:38:41,610 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:38:41,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:38:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:38:42,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:38:42,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:38:42,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:38:42,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:42,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:42,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:42,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:42,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:38:42,994 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:38:42,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:38:43,621 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:38:43,621 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 107 treesize of output 35 [2021-11-12 23:38:43,757 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:38:43,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:38:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:38:44,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:38:44,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074213575] [2021-11-12 23:38:44,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074213575] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:38:44,100 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:38:44,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:38:44,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952083263] [2021-11-12 23:38:44,101 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:38:44,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:38:44,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:38:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:38:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:38:44,102 INFO L87 Difference]: Start difference. First operand 931 states and 1414 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:38:46,137 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:48,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:50,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:53,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:38:57,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:04,120 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:08,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:39:08,734 INFO L93 Difference]: Finished difference Result 2578 states and 3869 transitions. [2021-11-12 23:39:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:39:08,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 115 [2021-11-12 23:39:08,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:39:08,747 INFO L225 Difference]: With dead ends: 2578 [2021-11-12 23:39:08,747 INFO L226 Difference]: Without dead ends: 1657 [2021-11-12 23:39:08,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:39:08,750 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 174 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 56 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23831.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24426.99ms IncrementalHoareTripleChecker+Time [2021-11-12 23:39:08,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 427 Invalid, 426 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [56 Valid, 368 Invalid, 2 Unknown, 0 Unchecked, 24426.99ms Time] [2021-11-12 23:39:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-11-12 23:39:08,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1014. [2021-11-12 23:39:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 1013 states have (on average 1.5024679170779862) internal successors, (1522), 1013 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:39:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1522 transitions. [2021-11-12 23:39:08,833 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1522 transitions. Word has length 115 [2021-11-12 23:39:08,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:39:08,834 INFO L470 AbstractCegarLoop]: Abstraction has 1014 states and 1522 transitions. [2021-11-12 23:39:08,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:39:08,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1522 transitions. [2021-11-12 23:39:08,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 23:39:08,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:39:08,840 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 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] [2021-11-12 23:39:08,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:39:09,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:39:09,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:39:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:39:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -647023955, now seen corresponding path program 1 times [2021-11-12 23:39:09,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:39:09,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076018501] [2021-11-12 23:39:09,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:39:09,057 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:39:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:39:09,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:39:09,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:39:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:39:09,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:39:09,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:39:09,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:09,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:09,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:09,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:09,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:09,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:10,374 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:39:10,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:39:11,292 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:39:11,292 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 107 treesize of output 35 [2021-11-12 23:39:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:39:11,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:39:11,752 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-12 23:39:11,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:39:11,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076018501] [2021-11-12 23:39:11,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076018501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:39:11,753 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:39:11,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:39:11,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576840282] [2021-11-12 23:39:11,753 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:39:11,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:39:11,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:39:11,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:39:11,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:39:11,755 INFO L87 Difference]: Start difference. First operand 1014 states and 1522 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:39:13,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:15,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:19,311 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:21,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:24,949 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:29,399 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:31,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:33,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:39:36,448 INFO L93 Difference]: Finished difference Result 2562 states and 3807 transitions. [2021-11-12 23:39:36,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:39:36,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 115 [2021-11-12 23:39:36,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:39:36,460 INFO L225 Difference]: With dead ends: 2562 [2021-11-12 23:39:36,461 INFO L226 Difference]: Without dead ends: 1729 [2021-11-12 23:39:36,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:39:36,465 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 166 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 54 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23901.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24475.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:39:36,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 452 Invalid, 414 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [54 Valid, 358 Invalid, 2 Unknown, 0 Unchecked, 24475.55ms Time] [2021-11-12 23:39:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-11-12 23:39:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1130. [2021-11-12 23:39:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.5022143489813995) internal successors, (1696), 1129 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:39:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1696 transitions. [2021-11-12 23:39:36,546 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1696 transitions. Word has length 115 [2021-11-12 23:39:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:39:36,546 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1696 transitions. [2021-11-12 23:39:36,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:39:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1696 transitions. [2021-11-12 23:39:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-12 23:39:36,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:39:36,550 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1] [2021-11-12 23:39:36,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:39:36,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:39:36,768 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:39:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:39:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash 336272896, now seen corresponding path program 1 times [2021-11-12 23:39:36,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:39:36,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422397148] [2021-11-12 23:39:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:39:36,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:39:36,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:39:36,770 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:39:36,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:39:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:39:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:39:37,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:39:37,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:39:37,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:37,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:37,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:37,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:37,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:39:38,167 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:39:38,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:39:38,845 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:39:38,846 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 107 treesize of output 35 [2021-11-12 23:39:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:39:38,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:39:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:39:39,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:39:39,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422397148] [2021-11-12 23:39:39,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422397148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:39:39,316 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:39:39,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:39:39,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804557630] [2021-11-12 23:39:39,316 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:39:39,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:39:39,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:39:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:39:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:39:39,317 INFO L87 Difference]: Start difference. First operand 1130 states and 1696 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:39:41,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:43,390 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:47,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:52,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:39:58,093 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:01,528 INFO L93 Difference]: Finished difference Result 2873 states and 4263 transitions. [2021-11-12 23:40:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:40:01,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 117 [2021-11-12 23:40:01,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:01,539 INFO L225 Difference]: With dead ends: 2873 [2021-11-12 23:40:01,539 INFO L226 Difference]: Without dead ends: 1753 [2021-11-12 23:40:01,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:40:01,541 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 169 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 53 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21443.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22006.79ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:01,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 439 Invalid, 417 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [53 Valid, 361 Invalid, 3 Unknown, 0 Unchecked, 22006.79ms Time] [2021-11-12 23:40:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-11-12 23:40:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1136. [2021-11-12 23:40:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.4854625550660794) internal successors, (1686), 1135 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:01,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1686 transitions. [2021-11-12 23:40:01,613 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1686 transitions. Word has length 117 [2021-11-12 23:40:01,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:01,613 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1686 transitions. [2021-11-12 23:40:01,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:01,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1686 transitions. [2021-11-12 23:40:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-12 23:40:01,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:01,617 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 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] [2021-11-12 23:40:01,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:01,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:01,831 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash 475530403, now seen corresponding path program 1 times [2021-11-12 23:40:01,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:01,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430530488] [2021-11-12 23:40:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:01,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:01,833 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:01,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:40:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:02,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:40:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:02,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:02,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:02,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:02,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:02,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:02,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:03,078 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:40:03,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:40:04,022 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:40:04,023 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 107 treesize of output 35 [2021-11-12 23:40:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:40:04,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:04,541 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:40:04,542 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:04,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430530488] [2021-11-12 23:40:04,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430530488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:04,542 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:40:04,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:40:04,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949382268] [2021-11-12 23:40:04,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:04,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:40:04,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:40:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:40:04,544 INFO L87 Difference]: Start difference. First operand 1136 states and 1686 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:06,591 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:08,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:09,759 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:11,615 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:14,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:22,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:27,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:28,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:29,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:38,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:40:38,882 INFO L93 Difference]: Finished difference Result 2642 states and 3887 transitions. [2021-11-12 23:40:38,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:40:38,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 117 [2021-11-12 23:40:38,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:40:38,892 INFO L225 Difference]: With dead ends: 2642 [2021-11-12 23:40:38,892 INFO L226 Difference]: Without dead ends: 1708 [2021-11-12 23:40:38,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:40:38,895 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 148 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 35 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33384.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.84ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34124.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:40:38,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 980 Invalid, 551 Unknown, 0 Unchecked, 3.84ms Time], IncrementalHoareTripleChecker [35 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 34124.42ms Time] [2021-11-12 23:40:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-11-12 23:40:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1152. [2021-11-12 23:40:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 1151 states have (on average 1.476107732406603) internal successors, (1699), 1151 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1699 transitions. [2021-11-12 23:40:38,964 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1699 transitions. Word has length 117 [2021-11-12 23:40:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:40:38,964 INFO L470 AbstractCegarLoop]: Abstraction has 1152 states and 1699 transitions. [2021-11-12 23:40:38,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1699 transitions. [2021-11-12 23:40:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-12 23:40:38,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:40:38,968 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1] [2021-11-12 23:40:38,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:40:39,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:40:39,184 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:40:39,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:40:39,185 INFO L85 PathProgramCache]: Analyzing trace with hash -760085446, now seen corresponding path program 1 times [2021-11-12 23:40:39,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:40:39,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469225142] [2021-11-12 23:40:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:40:39,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:40:39,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:40:39,186 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:40:39,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:40:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:40:39,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:40:39,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:40:39,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:39,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:39,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:39,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:39,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:40:40,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:40,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:40,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:40,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:40,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:40:40,462 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:40:40,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:40:41,216 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:40:41,217 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 107 treesize of output 35 [2021-11-12 23:40:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:40:41,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:40:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:40:41,688 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:40:41,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469225142] [2021-11-12 23:40:41,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469225142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:40:41,689 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:40:41,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:40:41,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415006881] [2021-11-12 23:40:41,689 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:40:41,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:40:41,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:40:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:40:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:40:41,690 INFO L87 Difference]: Start difference. First operand 1152 states and 1699 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:40:43,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:45,741 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:47,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:40:50,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:01,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:04,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:04,834 INFO L93 Difference]: Finished difference Result 2887 states and 4218 transitions. [2021-11-12 23:41:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:41:04,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 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 118 [2021-11-12 23:41:04,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:04,843 INFO L225 Difference]: With dead ends: 2887 [2021-11-12 23:41:04,843 INFO L226 Difference]: Without dead ends: 1750 [2021-11-12 23:41:04,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:41:04,845 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 162 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 55 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22352.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.79ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22937.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:04,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 415 Invalid, 420 Unknown, 0 Unchecked, 2.79ms Time], IncrementalHoareTripleChecker [55 Valid, 363 Invalid, 2 Unknown, 0 Unchecked, 22937.41ms Time] [2021-11-12 23:41:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-11-12 23:41:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1158. [2021-11-12 23:41:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 1.4589455488331893) internal successors, (1688), 1157 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:41:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1688 transitions. [2021-11-12 23:41:04,933 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1688 transitions. Word has length 118 [2021-11-12 23:41:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:04,934 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1688 transitions. [2021-11-12 23:41:04,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:41:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1688 transitions. [2021-11-12 23:41:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 23:41:04,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:04,938 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 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, 1] [2021-11-12 23:41:04,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:41:05,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:05,155 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1579061573, now seen corresponding path program 1 times [2021-11-12 23:41:05,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:05,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872108886] [2021-11-12 23:41:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:05,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:05,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:05,159 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:05,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:41:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:05,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:41:05,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:06,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:06,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:06,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:06,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:06,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:06,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:06,661 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:41:06,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:41:07,515 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:41:07,515 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 107 treesize of output 35 [2021-11-12 23:41:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:41:07,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:08,015 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:41:08,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:08,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872108886] [2021-11-12 23:41:08,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872108886] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:41:08,015 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:41:08,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:41:08,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232912030] [2021-11-12 23:41:08,016 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:08,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:41:08,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:41:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:41:08,017 INFO L87 Difference]: Start difference. First operand 1158 states and 1688 transitions. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:41:10,087 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:12,119 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:13,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:16,003 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:17,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:19,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:24,665 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:30,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:33,403 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:34,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:41:36,351 INFO L93 Difference]: Finished difference Result 2812 states and 4076 transitions. [2021-11-12 23:41:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:41:36,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 119 [2021-11-12 23:41:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:41:36,359 INFO L225 Difference]: With dead ends: 2812 [2021-11-12 23:41:36,359 INFO L226 Difference]: Without dead ends: 1669 [2021-11-12 23:41:36,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:41:36,361 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 155 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 54 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27520.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28111.48ms IncrementalHoareTripleChecker+Time [2021-11-12 23:41:36,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 400 Invalid, 402 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [54 Valid, 346 Invalid, 2 Unknown, 0 Unchecked, 28111.48ms Time] [2021-11-12 23:41:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2021-11-12 23:41:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1158. [2021-11-12 23:41:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 1.439066551426102) internal successors, (1665), 1157 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:41:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1665 transitions. [2021-11-12 23:41:36,429 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1665 transitions. Word has length 119 [2021-11-12 23:41:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:41:36,430 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1665 transitions. [2021-11-12 23:41:36,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:41:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1665 transitions. [2021-11-12 23:41:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-12 23:41:36,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:41:36,434 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1] [2021-11-12 23:41:36,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:41:36,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:41:36,647 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:41:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:41:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1069684126, now seen corresponding path program 1 times [2021-11-12 23:41:36,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:41:36,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950945308] [2021-11-12 23:41:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:41:36,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:41:36,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:41:36,650 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:41:36,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:41:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:41:37,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:41:37,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:41:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:41:37,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:37,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:37,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:37,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:37,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:41:37,853 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:41:37,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:41:38,920 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:41:38,921 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 107 treesize of output 35 [2021-11-12 23:41:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:41:39,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:41:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:41:39,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:41:39,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950945308] [2021-11-12 23:41:39,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950945308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:41:39,460 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:41:39,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:41:39,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781908802] [2021-11-12 23:41:39,460 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:41:39,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:41:39,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:41:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:41:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:41:39,461 INFO L87 Difference]: Start difference. First operand 1158 states and 1665 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:41:41,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:43,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:41:47,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:02,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:03,495 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:04,784 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:07,012 INFO L93 Difference]: Finished difference Result 2912 states and 4166 transitions. [2021-11-12 23:42:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:42:07,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-12 23:42:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:07,024 INFO L225 Difference]: With dead ends: 2912 [2021-11-12 23:42:07,025 INFO L226 Difference]: Without dead ends: 1769 [2021-11-12 23:42:07,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:07,027 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 145 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26677.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27315.18ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:07,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 524 Invalid, 497 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [50 Valid, 445 Invalid, 2 Unknown, 0 Unchecked, 27315.18ms Time] [2021-11-12 23:42:07,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-11-12 23:42:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1253. [2021-11-12 23:42:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 1.420926517571885) internal successors, (1779), 1252 states have internal predecessors, (1779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1779 transitions. [2021-11-12 23:42:07,109 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1779 transitions. Word has length 119 [2021-11-12 23:42:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:07,109 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 1779 transitions. [2021-11-12 23:42:07,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1779 transitions. [2021-11-12 23:42:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 23:42:07,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:07,113 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 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] [2021-11-12 23:42:07,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-12 23:42:07,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:07,331 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -672153909, now seen corresponding path program 1 times [2021-11-12 23:42:07,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:07,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689475646] [2021-11-12 23:42:07,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:07,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:07,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:07,334 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:07,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:42:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:07,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:07,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:08,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:08,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:08,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:08,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:08,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:08,571 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:42:08,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:42:09,952 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:42:09,953 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 107 treesize of output 35 [2021-11-12 23:42:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:42:10,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:10,506 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:42:10,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:10,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689475646] [2021-11-12 23:42:10,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689475646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:10,506 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:10,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:42:10,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201555133] [2021-11-12 23:42:10,506 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:10,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:42:10,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:42:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:42:10,507 INFO L87 Difference]: Start difference. First operand 1253 states and 1779 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:12,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:14,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:16,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:19,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:23,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:29,484 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:33,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:35,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:37,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:38,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:39,967 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:43,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:42:43,225 INFO L93 Difference]: Finished difference Result 2966 states and 4210 transitions. [2021-11-12 23:42:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:42:43,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 120 [2021-11-12 23:42:43,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:42:43,239 INFO L225 Difference]: With dead ends: 2966 [2021-11-12 23:42:43,239 INFO L226 Difference]: Without dead ends: 1728 [2021-11-12 23:42:43,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:42:43,241 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 134 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 52 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31767.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.26ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32492.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:42:43,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 512 Invalid, 498 Unknown, 0 Unchecked, 3.26ms Time], IncrementalHoareTripleChecker [52 Valid, 443 Invalid, 3 Unknown, 0 Unchecked, 32492.11ms Time] [2021-11-12 23:42:43,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2021-11-12 23:42:43,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1269. [2021-11-12 23:42:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.4195583596214512) internal successors, (1800), 1268 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1800 transitions. [2021-11-12 23:42:43,329 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1800 transitions. Word has length 120 [2021-11-12 23:42:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:42:43,330 INFO L470 AbstractCegarLoop]: Abstraction has 1269 states and 1800 transitions. [2021-11-12 23:42:43,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1800 transitions. [2021-11-12 23:42:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 23:42:43,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:42:43,334 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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] [2021-11-12 23:42:43,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:42:43,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:42:43,547 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:42:43,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:42:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash 745942391, now seen corresponding path program 1 times [2021-11-12 23:42:43,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:42:43,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351295530] [2021-11-12 23:42:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:42:43,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:42:43,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:42:43,551 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:42:43,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:42:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:42:44,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:42:44,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:42:44,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:42:44,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:44,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:44,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:44,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:44,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:42:45,019 INFO L354 Elim1Store]: treesize reduction 1134, result has 5.3 percent of original size [2021-11-12 23:42:45,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 56 treesize of output 74 [2021-11-12 23:42:46,386 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-12 23:42:46,387 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 107 treesize of output 35 [2021-11-12 23:42:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:42:46,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:42:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-12 23:42:47,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:42:47,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351295530] [2021-11-12 23:42:47,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351295530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:42:47,061 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:42:47,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:42:47,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144896013] [2021-11-12 23:42:47,062 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:42:47,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:42:47,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:42:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:42:47,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:42:47,063 INFO L87 Difference]: Start difference. First operand 1269 states and 1800 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:42:49,174 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:51,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:53,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:55,351 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:42:59,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:10,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:12,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:13,733 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:15,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:17,485 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:19,773 INFO L93 Difference]: Finished difference Result 2971 states and 4206 transitions. [2021-11-12 23:43:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:43:19,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 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 120 [2021-11-12 23:43:19,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:19,784 INFO L225 Difference]: With dead ends: 2971 [2021-11-12 23:43:19,784 INFO L226 Difference]: Without dead ends: 1717 [2021-11-12 23:43:19,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:43:19,787 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 130 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 48 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31705.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.50ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32456.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:19,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 539 Invalid, 477 Unknown, 0 Unchecked, 3.50ms Time], IncrementalHoareTripleChecker [48 Valid, 425 Invalid, 4 Unknown, 0 Unchecked, 32456.74ms Time] [2021-11-12 23:43:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2021-11-12 23:43:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1282. [2021-11-12 23:43:19,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1281 states have (on average 1.4082747853239657) internal successors, (1804), 1281 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1804 transitions. [2021-11-12 23:43:19,898 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1804 transitions. Word has length 120 [2021-11-12 23:43:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:19,898 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1804 transitions. [2021-11-12 23:43:19,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1804 transitions. [2021-11-12 23:43:19,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-12 23:43:19,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:19,903 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 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] [2021-11-12 23:43:19,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:20,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:20,119 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash 787843816, now seen corresponding path program 1 times [2021-11-12 23:43:20,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:20,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984449573] [2021-11-12 23:43:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:20,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:20,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:20,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 23:43:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:21,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:43:21,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:21,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:21,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:21,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:21,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:21,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:21,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:21,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 113 [2021-11-12 23:43:24,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:24,810 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:24,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 221 [2021-11-12 23:43:32,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:32,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 186 treesize of output 106 [2021-11-12 23:43:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-12 23:43:33,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-12 23:43:34,164 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:34,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984449573] [2021-11-12 23:43:34,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984449573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:34,164 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:34,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 23:43:34,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065862135] [2021-11-12 23:43:34,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:34,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:43:34,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:43:34,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:43:34,166 INFO L87 Difference]: Start difference. First operand 1282 states and 1804 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:36,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:38,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:41,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:43,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:45,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:46,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:50,490 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:51,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:43:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:43:51,672 INFO L93 Difference]: Finished difference Result 2414 states and 3387 transitions. [2021-11-12 23:43:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:43:51,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 123 [2021-11-12 23:43:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:43:51,692 INFO L225 Difference]: With dead ends: 2414 [2021-11-12 23:43:51,692 INFO L226 Difference]: Without dead ends: 1349 [2021-11-12 23:43:51,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:43:51,695 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 36 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 27 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17161.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 17438.81ms IncrementalHoareTripleChecker+Time [2021-11-12 23:43:51,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 689 Invalid, 257 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [27 Valid, 105 Invalid, 2 Unknown, 123 Unchecked, 17438.81ms Time] [2021-11-12 23:43:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2021-11-12 23:43:51,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1288. [2021-11-12 23:43:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 1.4087024087024087) internal successors, (1813), 1287 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1813 transitions. [2021-11-12 23:43:51,795 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1813 transitions. Word has length 123 [2021-11-12 23:43:51,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:43:51,796 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1813 transitions. [2021-11-12 23:43:51,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:43:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1813 transitions. [2021-11-12 23:43:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-12 23:43:51,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:51,801 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 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] [2021-11-12 23:43:51,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:43:52,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:43:52,027 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:43:52,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:52,027 INFO L85 PathProgramCache]: Analyzing trace with hash -935560660, now seen corresponding path program 1 times [2021-11-12 23:43:52,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:52,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55014501] [2021-11-12 23:43:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:52,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:52,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:52,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:52,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:43:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:53,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:43:53,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:53,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:53,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:53,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:53,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:53,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:43:53,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:53,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 69 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 113 [2021-11-12 23:43:56,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:43:56,854 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:43:56,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 273 treesize of output 221 [2021-11-12 23:44:04,518 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:44:04,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 120 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 186 treesize of output 106 [2021-11-12 23:44:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-12 23:44:04,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-12 23:44:05,656 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:05,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55014501] [2021-11-12 23:44:05,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55014501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:05,657 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:05,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-12 23:44:05,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899748866] [2021-11-12 23:44:05,657 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:05,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:44:05,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:44:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:44:05,658 INFO L87 Difference]: Start difference. First operand 1288 states and 1813 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:07,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:09,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:09,817 INFO L93 Difference]: Finished difference Result 2354 states and 3314 transitions. [2021-11-12 23:44:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:44:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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 124 [2021-11-12 23:44:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:09,824 INFO L225 Difference]: With dead ends: 2354 [2021-11-12 23:44:09,824 INFO L226 Difference]: Without dead ends: 1289 [2021-11-12 23:44:09,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2021-11-12 23:44:09,826 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 11 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4060.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 4089.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:09,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 683 Invalid, 106 Unknown, 0 Unchecked, 2.00ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 2 Unknown, 95 Unchecked, 4089.16ms Time] [2021-11-12 23:44:09,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2021-11-12 23:44:09,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1276. [2021-11-12 23:44:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 1.4094117647058824) internal successors, (1797), 1275 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:09,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1797 transitions. [2021-11-12 23:44:09,894 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1797 transitions. Word has length 124 [2021-11-12 23:44:09,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:09,894 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1797 transitions. [2021-11-12 23:44:09,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:44:09,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1797 transitions. [2021-11-12 23:44:09,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-12 23:44:09,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:09,899 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1] [2021-11-12 23:44:09,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:10,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:10,123 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:44:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash -272550210, now seen corresponding path program 1 times [2021-11-12 23:44:10,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:10,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155697382] [2021-11-12 23:44:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:10,125 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:10,126 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:10,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:44:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:44:18,821 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:44:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:44:24,113 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:44:24,115 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:44:24,117 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:44:24,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:24,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:24,347 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:44:24,353 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:44:24,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:44:24 BoogieIcfgContainer [2021-11-12 23:44:24,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:44:24,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:44:24,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:44:24,669 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:44:24,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:36:30" (3/4) ... [2021-11-12 23:44:24,672 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:44:24,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:44:24,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:44:24,851 INFO L158 Benchmark]: Toolchain (without parser) took 484288.26ms. Allocated memory was 67.1MB in the beginning and 161.5MB in the end (delta: 94.4MB). Free memory was 44.7MB in the beginning and 79.3MB in the end (delta: -34.6MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,852 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:44:24,854 INFO L158 Benchmark]: CACSL2BoogieTranslator took 996.91ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 44.4MB in the beginning and 60.3MB in the end (delta: -15.9MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.09ms. Allocated memory is still 96.5MB. Free memory was 60.3MB in the beginning and 55.7MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,854 INFO L158 Benchmark]: Boogie Preprocessor took 119.61ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 48.6MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,855 INFO L158 Benchmark]: RCFGBuilder took 8948.59ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 48.6MB in the beginning and 73.9MB in the end (delta: -25.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,855 INFO L158 Benchmark]: TraceAbstraction took 473928.91ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 73.5MB in the beginning and 105.3MB in the end (delta: -31.8MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,861 INFO L158 Benchmark]: Witness Printer took 181.37ms. Allocated memory is still 161.5MB. Free memory was 105.3MB in the beginning and 79.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-12 23:44:24,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 996.91ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 44.4MB in the beginning and 60.3MB in the end (delta: -15.9MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.09ms. Allocated memory is still 96.5MB. Free memory was 60.3MB in the beginning and 55.7MB in the end (delta: 4.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.61ms. Allocated memory is still 96.5MB. Free memory was 55.7MB in the beginning and 48.6MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 8948.59ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 48.6MB in the beginning and 73.9MB in the end (delta: -25.3MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 473928.91ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 73.5MB in the beginning and 105.3MB in the end (delta: -31.8MB). Peak memory consumption was 71.0MB. Max. memory is 16.1GB. * Witness Printer took 181.37ms. Allocated memory is still 161.5MB. Free memory was 105.3MB in the beginning and 79.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1658]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1042] static int init = 1; [L1043] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={-2147483569:0}] [L1065] SSL *s ; [L1069] s = malloc (sizeof (SSL)) [L1070] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1071] EXPR s->s3 [L1071] s->s3->flags = __VERIFIER_nondet_long() [L1072] EXPR s->s3 [L1072] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1073] EXPR s->s3 [L1073] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1074] EXPR s->s3 [L1074] EXPR (s->s3)->tmp.new_cipher [L1074] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1075] EXPR s->s3 [L1075] s->s3->tmp.next_state = __VERIFIER_nondet_int() [L1076] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1077] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1078] s->ctx = malloc(sizeof(SSL_CTX)) [L1079] EXPR s->ctx [L1079] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1080] s->state = 12292 [L1081] s->version = __VERIFIER_nondet_int() [L1082] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1083] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1084] CALL ssl3_connect(s) [L1090] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1091] unsigned long tmp ; [L1092] unsigned long l ; [L1093] long num1 ; [L1094] void (*cb)() ; [L1095] int ret ; [L1096] int new_state ; [L1097] int state ; [L1098] int skip ; [L1099] int *tmp___0 ; [L1100] int tmp___1 = __VERIFIER_nondet_int(); [L1101] int tmp___2 = __VERIFIER_nondet_int(); [L1102] int tmp___3 ; [L1103] int tmp___4 ; [L1104] int tmp___5 ; [L1105] int tmp___6 ; [L1106] int tmp___7 ; [L1107] int tmp___8 ; [L1108] long tmp___9 ; [L1110] int blastFlag ; [L1113] blastFlag = 0 [L1114] s->state = 12292 [L1115] s->hit = __VERIFIER_nondet_int() [L1117] tmp = __VERIFIER_nondet_int() [L1118] cb = (void (*)())((void *)0) [L1119] ret = -1 [L1120] skip = 0 [L1121] tmp___0 = (int*)malloc(sizeof(int)) [L1122] *tmp___0 = 0 [L1123] EXPR s->info_callback VAL [={0:0}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->info_callback={0:-2147483648}, skip=0, SSLv3_client_data={-2147483569:0}, tmp___0={1073741830:0}] [L1123] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1124] EXPR s->info_callback [L1124] cb = s->info_callback [L1132] EXPR s->in_handshake [L1132] s->in_handshake += 1 [L1133] COND FALSE !(tmp___1 & 12288) VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, tmp___0={1073741830:0}, tmp___1=0] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, tmp___0={1073741830:0}, tmp___1=0] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=12292, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0] [L1146] COND TRUE s->state == 12292 [L1249] s->new_session = 1 [L1250] s->state = 4096 [L1251] EXPR s->ctx [L1251] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1251] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1256] s->server = 0 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0] [L1257] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0] [L1262] EXPR s->version VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->version=768, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0] [L1262] COND FALSE !((s->version & 65280) != 768) [L1268] s->type = 4096 [L1269] EXPR s->init_buf VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->init_buf={0:-2147483648}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0] [L1269] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1281] tmp___4 = __VERIFIER_nondet_int() [L1282] COND FALSE !(! tmp___4) [L1288] tmp___5 = __VERIFIER_nondet_int() [L1289] COND FALSE !(! tmp___5) [L1295] s->state = 4368 [L1296] EXPR s->ctx [L1296] EXPR (s->ctx)->stats.sess_connect [L1296] (s->ctx)->stats.sess_connect += 1 [L1297] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=12292, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=4368, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=4368, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=4368, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=4368, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=4368, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, buf=null, init=1, ret=4294967295, s={6:0}, s={6:0}, s->state=4368, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND TRUE s->state == 4368 [L1301] s->shutdown = 0 [L1302] ret = __VERIFIER_nondet_int() [L1303] COND TRUE blastFlag == 0 [L1304] blastFlag = 1 VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1308] COND FALSE !(ret <= 0) [L1313] s->state = 4384 [L1314] s->init_num = 0 [L1315] EXPR s->bbio [L1315] EXPR s->wbio VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->bbio={0:0}, s->wbio={0:-2147483648}, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1315] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4368, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4384, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1167] COND TRUE s->state == 4384 [L1323] ret = __VERIFIER_nondet_int() [L1324] COND TRUE blastFlag == 1 [L1325] blastFlag = 2 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1329] COND FALSE !(ret <= 0) [L1334] s->hit VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->hit=0, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1334] COND FALSE !(s->hit) [L1337] s->state = 4400 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1339] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4384, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4400, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1173] COND TRUE s->state == 4400 [L1343] EXPR s->s3 [L1343] EXPR (s->s3)->tmp.new_cipher [L1343] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [={0:-2147483648}, ((s->s3)->tmp.new_cipher)->algorithms=0, (s->s3)->tmp.new_cipher={3:0}, blastFlag=2, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1343] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1346] ret = __VERIFIER_nondet_int() [L1347] COND TRUE blastFlag == 2 [L1348] blastFlag = 3 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1352] COND FALSE !(ret <= 0) VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1358] s->state = 4416 [L1359] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4400, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4416, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1179] COND TRUE s->state == 4416 [L1363] ret = __VERIFIER_nondet_int() [L1364] COND TRUE blastFlag == 3 [L1365] blastFlag = 4 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648] [L1369] COND FALSE !(ret <= 0) [L1374] s->state = 4432 [L1375] s->init_num = 0 [L1376] tmp___6 = __VERIFIER_nondet_int() [L1377] COND FALSE !(! tmp___6) VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4416, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4432, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1185] COND TRUE s->state == 4432 [L1386] ret = __VERIFIER_nondet_int() [L1387] COND FALSE !(blastFlag == 5) VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1392] COND FALSE !(ret <= 0) [L1397] s->state = 4448 [L1398] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] EXPR s->s3 [L1617] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=-2147483648, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->s3={2:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1617] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1646] skip = 0 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1143] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4432, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1145] EXPR s->state [L1145] state = s->state [L1146] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1146] COND FALSE !(s->state == 12292) [L1149] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1149] COND FALSE !(s->state == 16384) [L1152] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1152] COND FALSE !(s->state == 4096) [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1155] COND FALSE !(s->state == 20480) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1158] COND FALSE !(s->state == 4099) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1161] COND FALSE !(s->state == 4368) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1164] COND FALSE !(s->state == 4369) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1167] COND FALSE !(s->state == 4384) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1170] COND FALSE !(s->state == 4385) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1173] COND FALSE !(s->state == 4400) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1176] COND FALSE !(s->state == 4401) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1179] COND FALSE !(s->state == 4416) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1182] COND FALSE !(s->state == 4417) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1185] COND FALSE !(s->state == 4432) [L1188] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1188] COND FALSE !(s->state == 4433) [L1191] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=1073741824, s={6:0}, s={6:0}, s->state=4448, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1191] COND TRUE s->state == 4448 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=9, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] [L1658] reach_error() VAL [={0:-2147483648}, blastFlag=4, buf=null, init=1, ret=9, s={6:0}, s={6:0}, skip=0, SSLv3_client_data={-2147483569:0}, state=4448, tmp___0={1073741830:0}, tmp___1=0, tmp___4=2147483648, tmp___5=2147483648, tmp___6=2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 473.6s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 388.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 39 mSolverCounterUnknown, 2760 SdHoareTripleChecker+Valid, 385338.46ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2760 mSDsluCounter, 10113 SdHoareTripleChecker+Invalid, 376852.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 218 IncrementalHoareTripleChecker+Unchecked, 7043 mSDsCounter, 615 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5292 IncrementalHoareTripleChecker+Invalid, 6164 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 615 mSolverCounterUnsat, 3070 mSDtfsCounter, 5292 mSolverCounterSat, 80.98ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3523 GetRequests, 3432 SyntacticMatches, 4 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1288occurred in iteration=16, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 6738 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 18.8s SatisfiabilityAnalysisTime, 53.9s InterpolantComputationTime, 1904 NumberOfCodeBlocks, 1904 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 3500 ConstructedInterpolants, 23 QuantifiedInterpolants, 23779 SizeOfPredicates, 86 NumberOfNonLiveVariables, 5106 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 4836/4836 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-12 23:44:24,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32212fdd-1f25-4833-8960-5ebbc0b5142d/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE