./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs --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 d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:30,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:30,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:31,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:31,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:31,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:31,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:31,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:31,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:31,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:31,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:31,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:31,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:31,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:31,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:31,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:31,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:31,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:31,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:31,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:31,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:31,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:31,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:31,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:31,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:31,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:31,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:31,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:31,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:31,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:31,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:31,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:31,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:31,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:31,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:31,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:31,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:31,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:31,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:31,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:31,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:31,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:35:31,135 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:31,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:31,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:31,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:31,137 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:31,138 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:31,138 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:31,138 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:35:31,139 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:31,139 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:31,139 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:35:31,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:35:31,140 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:31,140 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:35:31,140 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:35:31,141 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:35:31,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:31,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:35:31,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:35:31,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:35:31,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:31,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:31,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:31,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:31,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:31,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:35:31,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:31,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:31,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:31,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:31,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:31,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:31,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:31,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:31,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:31,147 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:35:31,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:35:31,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:31,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:31,148 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:31,148 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2021-11-19 14:35:31,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:31,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:31,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:31,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:31,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:31,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-19 14:35:31,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/e9643968f/9488ade41d2749a8891e5bdbc67dccfe/FLAGf5d157a41 [2021-11-19 14:35:32,061 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:32,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-19 14:35:32,068 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/e9643968f/9488ade41d2749a8891e5bdbc67dccfe/FLAGf5d157a41 [2021-11-19 14:35:32,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/e9643968f/9488ade41d2749a8891e5bdbc67dccfe [2021-11-19 14:35:32,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:32,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:32,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:32,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:32,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:32,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:32" (1/1) ... [2021-11-19 14:35:32,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4b3f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32, skipping insertion in model container [2021-11-19 14:35:32,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:32" (1/1) ... [2021-11-19 14:35:32,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:32,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:32,701 WARN L230 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-19 14:35:32,733 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:32,753 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) [2021-11-19 14:35:32,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4632a918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:32, skipping insertion in model container [2021-11-19 14:35:32,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:32,754 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:35:32,759 INFO L158 Benchmark]: Toolchain (without parser) took 318.32ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.8MB in the beginning and 98.6MB in the end (delta: -32.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:35:32,762 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 52.5MB in the beginning and 52.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:35:32,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.21ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.6MB in the beginning and 98.6MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:35:32,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 98.6MB. Free memory was 52.5MB in the beginning and 52.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.21ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.6MB in the beginning and 98.6MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 34]: 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs --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 d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:35:35,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:35:35,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:35:35,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:35:35,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:35:35,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:35:35,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:35:35,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:35:35,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:35:35,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:35:35,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:35:35,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:35:35,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:35:35,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:35:35,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:35:35,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:35:35,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:35:35,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:35:35,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:35:35,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:35:35,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:35:35,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:35:35,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:35:35,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:35:35,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:35:35,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:35:35,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:35:35,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:35:35,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:35:35,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:35:35,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:35:35,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:35:35,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:35:35,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:35:35,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:35:35,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:35:35,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:35:35,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:35:35,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:35:35,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:35:35,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:35:35,428 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:35:35,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:35:35,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:35:35,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:35:35,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:35:35,475 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:35:35,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:35:35,476 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:35:35,476 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:35:35,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:35:35,476 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:35:35,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:35:35,479 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:35:35,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:35:35,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:35:35,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:35:35,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:35:35,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:35:35,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:35:35,481 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:35:35,481 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:35:35,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:35:35,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:35:35,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:35:35,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:35:35,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:35:35,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:35:35,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:35:35,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:35,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:35:35,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:35:35,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:35:35,484 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:35:35,484 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:35,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:35:35,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:35:35,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:35:35,485 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d48e7f91c207323ca4789c990d64e958c1524faa33e5de2c1f0c6fd7803f4f2e [2021-11-19 14:35:35,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:35:35,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:35:35,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:35:35,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:35:35,925 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:35:35,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-19 14:35:36,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/d9877b5d4/04643706f8f84cbf9fbb409b8771ef39/FLAG5d4ba0297 [2021-11-19 14:35:36,650 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:35:36,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i [2021-11-19 14:35:36,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/d9877b5d4/04643706f8f84cbf9fbb409b8771ef39/FLAG5d4ba0297 [2021-11-19 14:35:37,001 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/data/d9877b5d4/04643706f8f84cbf9fbb409b8771ef39 [2021-11-19 14:35:37,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:35:37,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:35:37,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:37,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:35:37,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:35:37,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2830dfaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37, skipping insertion in model container [2021-11-19 14:35:37,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:35:37,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:37,229 WARN L230 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-19 14:35:37,253 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:37,268 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:35:37,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:35:37,278 WARN L230 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-19 14:35:37,304 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:37,310 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:35:37,362 WARN L230 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_be262dc1-6f9f-4bf6-b714-163564dd3eaf/sv-benchmarks/c/array-industry-pattern/array_of_struct_ptr_cond_init.i[999,1012] [2021-11-19 14:35:37,371 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:35:37,418 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:35:37,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37 WrapperNode [2021-11-19 14:35:37,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:35:37,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:37,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:35:37,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:35:37,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,489 INFO L137 Inliner]: procedures = 23, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2021-11-19 14:35:37,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:35:37,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:35:37,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:35:37,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:35:37,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:35:37,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:35:37,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:35:37,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:35:37,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (1/1) ... [2021-11-19 14:35:37,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:35:37,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:37,569 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:35:37,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:35:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:35:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:35:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:35:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:35:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:35:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:35:37,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:35:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:35:37,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:35:37,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:35:37,694 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:35:37,696 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:35:37,923 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:35:37,930 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:35:37,931 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 14:35:37,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:37 BoogieIcfgContainer [2021-11-19 14:35:37,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:35:37,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:35:37,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:35:37,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:35:37,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:35:37" (1/3) ... [2021-11-19 14:35:37,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9d560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:37, skipping insertion in model container [2021-11-19 14:35:37,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:35:37" (2/3) ... [2021-11-19 14:35:37,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9d560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:35:37, skipping insertion in model container [2021-11-19 14:35:37,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:35:37" (3/3) ... [2021-11-19 14:35:37,952 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_cond_init.i [2021-11-19 14:35:37,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:35:37,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:35:38,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:35:38,040 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 [2021-11-19 14:35:38,041 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:35:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:38,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:35:38,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:38,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:38,086 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:38,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:38,099 INFO L85 PathProgramCache]: Analyzing trace with hash 650130346, now seen corresponding path program 1 times [2021-11-19 14:35:38,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:38,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944555174] [2021-11-19 14:35:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:38,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:38,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:38,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:38,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:35:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:38,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:35:38,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:38,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:38,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:38,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944555174] [2021-11-19 14:35:38,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944555174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:35:38,403 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:35:38,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:35:38,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39176138] [2021-11-19 14:35:38,406 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:38,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:35:38,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:35:38,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:35:38,455 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:38,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:38,473 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-19 14:35:38,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:35:38,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 14:35:38,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:38,485 INFO L225 Difference]: With dead ends: 31 [2021-11-19 14:35:38,486 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 14:35:38,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:35:38,497 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:38,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:35:38,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 14:35:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 14:35:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-11-19 14:35:38,550 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 8 [2021-11-19 14:35:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:38,552 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-19 14:35:38,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-19 14:35:38,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 14:35:38,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:38,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:38,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:38,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:38,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash 220693081, now seen corresponding path program 1 times [2021-11-19 14:35:38,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:38,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606946722] [2021-11-19 14:35:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:38,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:38,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:38,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:38,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:35:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:38,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:35:38,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:38,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:38,994 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:38,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606946722] [2021-11-19 14:35:38,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606946722] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:35:38,994 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:35:38,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:35:38,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601467704] [2021-11-19 14:35:38,995 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:35:38,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:35:38,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:35:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:35:38,998 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:39,106 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-11-19 14:35:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:35:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 14:35:39,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:39,114 INFO L225 Difference]: With dead ends: 37 [2021-11-19 14:35:39,115 INFO L226 Difference]: Without dead ends: 29 [2021-11-19 14:35:39,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:35:39,117 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:39,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 24 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:35:39,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-19 14:35:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-11-19 14:35:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-19 14:35:39,134 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2021-11-19 14:35:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:39,135 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-19 14:35:39,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-19 14:35:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 14:35:39,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:39,136 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:39,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:39,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:35:39,347 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:39,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:39,347 INFO L85 PathProgramCache]: Analyzing trace with hash 43755833, now seen corresponding path program 1 times [2021-11-19 14:35:39,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:39,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364684682] [2021-11-19 14:35:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:39,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:39,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:39,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:39,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:35:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:39,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:35:39,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:39,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:39,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:39,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364684682] [2021-11-19 14:35:39,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364684682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:39,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1931052682] [2021-11-19 14:35:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:39,726 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:39,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:35:39,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:35:39,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-19 14:35:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:39,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:35:39,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:39,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:40,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1931052682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:40,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236686261] [2021-11-19 14:35:40,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:35:40,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:40,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:35:40,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 14:35:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:35:40,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:35:40,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:40,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:40,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236686261] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:40,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:35:40,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-19 14:35:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089043441] [2021-11-19 14:35:40,262 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:35:40,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:35:40,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:40,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:35:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:35:40,265 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:40,577 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2021-11-19 14:35:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:35:40,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-19 14:35:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:40,580 INFO L225 Difference]: With dead ends: 85 [2021-11-19 14:35:40,580 INFO L226 Difference]: Without dead ends: 77 [2021-11-19 14:35:40,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:35:40,582 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 140 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:40,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 107 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:35:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-19 14:35:40,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 41. [2021-11-19 14:35:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-11-19 14:35:40,602 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 18 [2021-11-19 14:35:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:40,603 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-11-19 14:35:40,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:40,604 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-11-19 14:35:40,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 14:35:40,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:40,609 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:40,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:40,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 14:35:41,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:41,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:41,232 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1601220345, now seen corresponding path program 2 times [2021-11-19 14:35:41,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:41,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828935838] [2021-11-19 14:35:41,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:35:41,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:41,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:41,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:35:41,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:35:41,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:35:41,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:35:41,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:41,650 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:41,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:42,020 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:42,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828935838] [2021-11-19 14:35:42,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828935838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:42,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [750396445] [2021-11-19 14:35:42,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:35:42,021 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:35:42,023 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:35:42,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 14:35:42,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:35:42,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:35:42,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:35:42,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:42,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:42,551 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:42,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [750396445] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:42,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11364973] [2021-11-19 14:35:42,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:35:42,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:42,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:42,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:35:42,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 14:35:42,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:35:42,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:35:42,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:35:42,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:42,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:42,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11364973] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:42,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:35:42,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2021-11-19 14:35:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070440313] [2021-11-19 14:35:42,946 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:35:42,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:35:42,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:35:42,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:35:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:35:42,952 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:35:43,928 INFO L93 Difference]: Finished difference Result 181 states and 219 transitions. [2021-11-19 14:35:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:35:43,930 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 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 38 [2021-11-19 14:35:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:35:43,932 INFO L225 Difference]: With dead ends: 181 [2021-11-19 14:35:43,932 INFO L226 Difference]: Without dead ends: 173 [2021-11-19 14:35:43,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:35:43,934 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 528 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:35:43,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 506 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:35:43,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-19 14:35:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 81. [2021-11-19 14:35:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.2125) internal successors, (97), 80 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) [2021-11-19 14:35:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2021-11-19 14:35:43,948 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 38 [2021-11-19 14:35:43,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:35:43,948 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2021-11-19 14:35:43,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:35:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2021-11-19 14:35:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 14:35:43,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:35:43,952 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:35:43,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:44,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:44,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:35:44,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:44,565 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:35:44,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:35:44,566 INFO L85 PathProgramCache]: Analyzing trace with hash 739613305, now seen corresponding path program 3 times [2021-11-19 14:35:44,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:35:44,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486467487] [2021-11-19 14:35:44,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:35:44,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:35:44,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:35:44,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:35:44,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:35:50,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-19 14:35:50,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:35:50,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:35:50,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:35:50,524 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:50,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:35:51,587 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:35:51,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:35:51,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486467487] [2021-11-19 14:35:51,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486467487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:35:51,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [868868001] [2021-11-19 14:35:51,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:35:51,589 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:35:51,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:35:51,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:35:51,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 14:35:51,751 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 14:35:51,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944327461] [2021-11-19 14:35:51,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:35:51,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:35:51,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:35:51,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 1 [2021-11-19 14:35:51,761 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:35:51,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be262dc1-6f9f-4bf6-b714-163564dd3eaf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process