./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:45:43,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:45:43,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:45:44,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:45:44,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:45:44,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:45:44,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:45:44,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:45:44,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:45:44,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:45:44,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:45:44,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:45:44,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:45:44,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:45:44,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:45:44,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:45:44,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:45:44,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:45:44,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:45:44,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:45:44,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:45:44,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:45:44,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:45:44,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:45:44,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:45:44,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:45:44,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:45:44,150 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:45:44,151 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:45:44,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:45:44,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:45:44,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:45:44,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:45:44,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:45:44,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:45:44,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:45:44,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:45:44,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:45:44,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:45:44,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:45:44,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:45:44,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:45:44,223 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:45:44,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:45:44,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:45:44,227 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:45:44,227 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:45:44,227 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:45:44,227 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:45:44,228 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:45:44,236 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:45:44,236 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:45:44,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:45:44,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:45:44,239 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:45:44,239 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:45:44,239 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:45:44,240 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:45:44,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:45:44,241 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:45:44,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:45:44,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:45:44,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:45:44,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:45:44,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:45:44,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:45:44,243 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:45:44,243 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:45:44,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:45:44,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:45:44,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:45:44,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:45:44,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:45:44,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:45:44,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:45:44,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:45:44,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:45:44,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:45:44,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:45:44,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:45:44,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:45:44,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:45:44,250 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2021-11-19 15:45:44,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:45:44,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:45:44,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:45:44,702 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:45:44,703 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:45:44,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2021-11-19 15:45:44,825 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/bdc59b141/ed5f244cfbf446278044e80d6cec1560/FLAG39dce77b4 [2021-11-19 15:45:45,631 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:45:45,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2021-11-19 15:45:45,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/bdc59b141/ed5f244cfbf446278044e80d6cec1560/FLAG39dce77b4 [2021-11-19 15:45:45,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/bdc59b141/ed5f244cfbf446278044e80d6cec1560 [2021-11-19 15:45:45,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:45:45,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:45:45,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:45,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:45:45,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:45:45,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:45" (1/1) ... [2021-11-19 15:45:45,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792d20b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:45, skipping insertion in model container [2021-11-19 15:45:45,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:45" (1/1) ... [2021-11-19 15:45:45,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:45:45,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:45:46,406 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2021-11-19 15:45:46,592 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2021-11-19 15:45:46,614 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:46,627 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 15:45:46,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@633a5b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:46, skipping insertion in model container [2021-11-19 15:45:46,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:46,629 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:45:46,631 INFO L158 Benchmark]: Toolchain (without parser) took 889.56ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 55.0MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 15:45:46,632 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 67.4MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:45:46,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 886.35ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 55.0MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 15:45:46,636 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 67.4MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 886.35ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 55.0MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:45:49,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:45:49,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:45:49,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:45:49,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:45:49,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:45:49,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:45:49,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:45:49,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:45:49,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:45:49,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:45:49,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:45:49,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:45:49,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:45:49,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:45:49,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:45:49,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:45:49,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:45:49,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:45:49,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:45:49,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:45:49,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:45:49,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:45:49,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:45:49,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:45:49,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:45:49,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:45:49,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:45:49,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:45:49,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:45:49,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:45:49,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:45:49,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:45:49,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:45:49,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:45:49,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:45:49,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:45:49,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:45:49,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:45:49,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:45:49,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:45:49,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:45:49,731 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:45:49,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:45:49,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:45:49,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:45:49,734 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:45:49,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:45:49,735 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:45:49,735 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:45:49,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:45:49,736 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:45:49,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:45:49,739 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:45:49,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:45:49,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:45:49,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:45:49,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:45:49,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:45:49,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:45:49,741 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:45:49,742 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:45:49,742 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:45:49,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:45:49,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:45:49,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:45:49,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:45:49,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:45:49,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:45:49,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:45:49,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:45:49,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:45:49,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:45:49,746 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:45:49,746 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:45:49,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:45:49,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:45:49,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:45:49,747 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2021-11-19 15:45:50,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:45:50,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:45:50,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:45:50,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:45:50,315 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:45:50,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2021-11-19 15:45:50,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/ceb39ef36/814115f384ea46eea6a93e9e523c13ad/FLAG015c004f6 [2021-11-19 15:45:51,286 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:45:51,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2021-11-19 15:45:51,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/ceb39ef36/814115f384ea46eea6a93e9e523c13ad/FLAG015c004f6 [2021-11-19 15:45:51,435 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/data/ceb39ef36/814115f384ea46eea6a93e9e523c13ad [2021-11-19 15:45:51,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:45:51,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:45:51,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:51,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:45:51,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:45:51,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:51" (1/1) ... [2021-11-19 15:45:51,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ea39a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:51, skipping insertion in model container [2021-11-19 15:45:51,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:45:51" (1/1) ... [2021-11-19 15:45:51,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:45:51,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:45:52,127 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2021-11-19 15:45:52,346 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2021-11-19 15:45:52,378 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:52,405 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:45:52,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:45:52,471 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2021-11-19 15:45:52,561 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2021-11-19 15:45:52,575 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:52,583 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:45:52,646 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2021-11-19 15:45:52,755 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_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2021-11-19 15:45:52,783 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:45:52,875 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:45:52,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52 WrapperNode [2021-11-19 15:45:52,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:45:52,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:45:52,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:45:52,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:45:52,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:52,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,035 INFO L137 Inliner]: procedures = 180, calls = 348, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-19 15:45:53,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:45:53,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:45:53,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:45:53,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:45:53,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:45:53,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:45:53,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:45:53,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:45:53,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (1/1) ... [2021-11-19 15:45:53,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:45:53,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:45:53,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:45:53,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:45:53,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:45:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:45:53,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:45:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:45:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:45:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:45:53,363 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2021-11-19 15:45:53,363 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2021-11-19 15:45:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:45:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:45:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:45:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:45:53,364 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:45:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:45:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:45:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:45:53,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:45:53,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:45:53,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:45:53,747 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:45:53,750 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:46:01,272 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:46:01,285 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:46:01,285 INFO L301 CfgBuilder]: Removed 71 assume(true) statements. [2021-11-19 15:46:01,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:46:01 BoogieIcfgContainer [2021-11-19 15:46:01,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:46:01,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:46:01,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:46:01,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:46:01,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:45:51" (1/3) ... [2021-11-19 15:46:01,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48d29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:46:01, skipping insertion in model container [2021-11-19 15:46:01,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:45:52" (2/3) ... [2021-11-19 15:46:01,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f48d29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:46:01, skipping insertion in model container [2021-11-19 15:46:01,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:46:01" (3/3) ... [2021-11-19 15:46:01,299 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-2.i [2021-11-19 15:46:01,305 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:46:01,306 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 15:46:01,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:46:01,407 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 15:46:01,407 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 15:46:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 15:46:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 15:46:01,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:01,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:01,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1334755327, now seen corresponding path program 1 times [2021-11-19 15:46:01,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:01,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821834544] [2021-11-19 15:46:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:01,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:01,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:01,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:46:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:01,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:46:01,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:01,903 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 15:46:01,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:01,935 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 15:46:01,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:01,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821834544] [2021-11-19 15:46:01,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821834544] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:01,938 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:01,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:46:01,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003008595] [2021-11-19 15:46:01,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:01,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:46:01,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:01,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:46:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:46:01,986 INFO L87 Difference]: Start difference. First operand has 255 states, 229 states have (on average 1.6943231441048034) internal successors, (388), 246 states have internal predecessors, (388), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:46:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:02,058 INFO L93 Difference]: Finished difference Result 508 states and 871 transitions. [2021-11-19 15:46:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:46:02,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-19 15:46:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:02,077 INFO L225 Difference]: With dead ends: 508 [2021-11-19 15:46:02,077 INFO L226 Difference]: Without dead ends: 222 [2021-11-19 15:46:02,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 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 15:46:02,090 INFO L933 BasicCegarLoop]: 351 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, 351 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 15:46:02,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:02,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-19 15:46:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-19 15:46:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 197 states have (on average 1.3553299492385786) internal successors, (267), 213 states have internal predecessors, (267), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 15:46:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 307 transitions. [2021-11-19 15:46:02,214 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 307 transitions. Word has length 9 [2021-11-19 15:46:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:02,215 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 307 transitions. [2021-11-19 15:46:02,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 15:46:02,220 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 307 transitions. [2021-11-19 15:46:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 15:46:02,225 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:02,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:02,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:46:02,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:02,441 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:02,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:02,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1790395171, now seen corresponding path program 1 times [2021-11-19 15:46:02,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:02,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375121861] [2021-11-19 15:46:02,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:02,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:02,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:02,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:02,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:46:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:02,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:02,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:02,980 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 15:46:02,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:03,140 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 15:46:03,140 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:03,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375121861] [2021-11-19 15:46:03,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375121861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:03,147 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:03,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:46:03,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406751146] [2021-11-19 15:46:03,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:03,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:46:03,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:03,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:46:03,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:46:03,159 INFO L87 Difference]: Start difference. First operand 222 states and 307 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 15:46:03,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:03,425 INFO L93 Difference]: Finished difference Result 355 states and 499 transitions. [2021-11-19 15:46:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:46:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-19 15:46:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:03,429 INFO L225 Difference]: With dead ends: 355 [2021-11-19 15:46:03,429 INFO L226 Difference]: Without dead ends: 231 [2021-11-19 15:46:03,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:46:03,435 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 97 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:03,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 953 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:03,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-11-19 15:46:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2021-11-19 15:46:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 200 states have (on average 1.31) internal successors, (262), 216 states have internal predecessors, (262), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 15:46:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 302 transitions. [2021-11-19 15:46:03,460 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 302 transitions. Word has length 44 [2021-11-19 15:46:03,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:03,461 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 302 transitions. [2021-11-19 15:46:03,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 15:46:03,461 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 302 transitions. [2021-11-19 15:46:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 15:46:03,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:03,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:03,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:03,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:03,681 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:03,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1417019415, now seen corresponding path program 1 times [2021-11-19 15:46:03,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:03,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592833179] [2021-11-19 15:46:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:03,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:03,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:03,685 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:03,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:46:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:03,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:03,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:04,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:46:04,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:46:04,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:46:04,139 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 15:46:04,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 15:46:04,271 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 15:46:04,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 15:46:04,420 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 15:46:04,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:04,626 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 15:46:04,627 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:04,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592833179] [2021-11-19 15:46:04,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592833179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:04,630 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:04,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:46:04,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43572136] [2021-11-19 15:46:04,634 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:04,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:46:04,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:04,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:46:04,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:46:04,639 INFO L87 Difference]: Start difference. First operand 225 states and 302 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 15:46:11,168 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:13,180 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:19,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:46:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:20,207 INFO L93 Difference]: Finished difference Result 552 states and 724 transitions. [2021-11-19 15:46:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:46:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 44 [2021-11-19 15:46:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:20,213 INFO L225 Difference]: With dead ends: 552 [2021-11-19 15:46:20,213 INFO L226 Difference]: Without dead ends: 424 [2021-11-19 15:46:20,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:46:20,215 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 216 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:20,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 1265 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 249 Invalid, 3 Unknown, 0 Unchecked, 15.5s Time] [2021-11-19 15:46:20,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-19 15:46:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 227. [2021-11-19 15:46:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 202 states have (on average 1.306930693069307) internal successors, (264), 218 states have internal predecessors, (264), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 15:46:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 304 transitions. [2021-11-19 15:46:20,246 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 304 transitions. Word has length 44 [2021-11-19 15:46:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:20,247 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 304 transitions. [2021-11-19 15:46:20,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 15:46:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 304 transitions. [2021-11-19 15:46:20,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 15:46:20,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:20,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:20,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:20,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:20,464 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash -342228401, now seen corresponding path program 1 times [2021-11-19 15:46:20,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:20,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243833576] [2021-11-19 15:46:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:20,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:20,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:20,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:20,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:46:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:20,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:20,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:21,061 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 15:46:21,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:21,317 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 15:46:21,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:21,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243833576] [2021-11-19 15:46:21,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243833576] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:21,318 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:21,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:46:21,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811690917] [2021-11-19 15:46:21,319 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:21,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:46:21,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:46:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:46:21,320 INFO L87 Difference]: Start difference. First operand 227 states and 304 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:46:21,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:21,536 INFO L93 Difference]: Finished difference Result 459 states and 616 transitions. [2021-11-19 15:46:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:46:21,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-19 15:46:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:21,544 INFO L225 Difference]: With dead ends: 459 [2021-11-19 15:46:21,548 INFO L226 Difference]: Without dead ends: 236 [2021-11-19 15:46:21,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:46:21,553 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 396 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:21,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 619 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-19 15:46:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2021-11-19 15:46:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 205 states have (on average 1.2634146341463415) internal successors, (259), 221 states have internal predecessors, (259), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 15:46:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 299 transitions. [2021-11-19 15:46:21,596 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 299 transitions. Word has length 61 [2021-11-19 15:46:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:21,597 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 299 transitions. [2021-11-19 15:46:21,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:46:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 299 transitions. [2021-11-19 15:46:21,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 15:46:21,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:21,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:21,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:21,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:21,828 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:21,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1231044993, now seen corresponding path program 1 times [2021-11-19 15:46:21,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:21,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598968525] [2021-11-19 15:46:21,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:21,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:21,832 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:21,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:46:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:46:22,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:22,440 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 15:46:22,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:23,014 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 15:46:23,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:23,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598968525] [2021-11-19 15:46:23,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598968525] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:23,015 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:23,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-19 15:46:23,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037883649] [2021-11-19 15:46:23,016 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:23,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:46:23,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:46:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:46:23,018 INFO L87 Difference]: Start difference. First operand 230 states and 299 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:46:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:23,178 INFO L93 Difference]: Finished difference Result 455 states and 593 transitions. [2021-11-19 15:46:23,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:46:23,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-19 15:46:23,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:23,183 INFO L225 Difference]: With dead ends: 455 [2021-11-19 15:46:23,184 INFO L226 Difference]: Without dead ends: 229 [2021-11-19 15:46:23,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:46:23,187 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 365 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:23,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 612 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:46:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-11-19 15:46:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 224. [2021-11-19 15:46:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 199 states have (on average 1.2512562814070352) internal successors, (249), 215 states have internal predecessors, (249), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 15:46:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2021-11-19 15:46:23,211 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 61 [2021-11-19 15:46:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:23,214 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2021-11-19 15:46:23,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:46:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2021-11-19 15:46:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 15:46:23,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:23,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:23,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:23,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:23,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:23,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:23,420 INFO L85 PathProgramCache]: Analyzing trace with hash 933653125, now seen corresponding path program 1 times [2021-11-19 15:46:23,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:23,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119642582] [2021-11-19 15:46:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:23,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:23,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:23,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:23,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:46:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:23,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:23,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:24,242 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 15:46:24,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:24,713 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 15:46:24,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:24,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119642582] [2021-11-19 15:46:24,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119642582] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:46:24,714 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:46:24,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:46:24,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960408276] [2021-11-19 15:46:24,714 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:24,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:46:24,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:24,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:46:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:24,716 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:46:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:25,819 INFO L93 Difference]: Finished difference Result 549 states and 694 transitions. [2021-11-19 15:46:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:46:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-19 15:46:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:25,824 INFO L225 Difference]: With dead ends: 549 [2021-11-19 15:46:25,824 INFO L226 Difference]: Without dead ends: 329 [2021-11-19 15:46:25,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:46:25,826 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 79 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:25,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 563 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 15:46:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-19 15:46:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 326. [2021-11-19 15:46:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 300 states have (on average 1.21) internal successors, (363), 316 states have internal predecessors, (363), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-19 15:46:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 405 transitions. [2021-11-19 15:46:25,849 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 405 transitions. Word has length 61 [2021-11-19 15:46:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:25,850 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 405 transitions. [2021-11-19 15:46:25,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:46:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 405 transitions. [2021-11-19 15:46:25,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-19 15:46:25,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:25,852 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:25,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:26,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:26,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1452917895, now seen corresponding path program 1 times [2021-11-19 15:46:26,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:26,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318473827] [2021-11-19 15:46:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:26,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:26,075 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:26,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:46:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:26,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:46:26,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:46:26,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:46:26,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:26,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318473827] [2021-11-19 15:46:26,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318473827] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:46:26,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:46:26,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 15:46:26,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933619610] [2021-11-19 15:46:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:46:26,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:46:26,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:26,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:46:26,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:46:26,983 INFO L87 Difference]: Start difference. First operand 326 states and 405 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 15:46:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:27,070 INFO L93 Difference]: Finished difference Result 616 states and 777 transitions. [2021-11-19 15:46:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:46:27,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-11-19 15:46:27,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:27,075 INFO L225 Difference]: With dead ends: 616 [2021-11-19 15:46:27,075 INFO L226 Difference]: Without dead ends: 329 [2021-11-19 15:46:27,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:46:27,078 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 2 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:27,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 830 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:46:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-19 15:46:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2021-11-19 15:46:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 302 states have (on average 1.2119205298013245) internal successors, (366), 319 states have internal predecessors, (366), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-19 15:46:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 409 transitions. [2021-11-19 15:46:27,109 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 409 transitions. Word has length 76 [2021-11-19 15:46:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:27,112 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 409 transitions. [2021-11-19 15:46:27,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 15:46:27,112 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 409 transitions. [2021-11-19 15:46:27,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 15:46:27,115 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:27,115 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:27,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:27,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:46:27,329 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -975375717, now seen corresponding path program 1 times [2021-11-19 15:46:27,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:27,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302910275] [2021-11-19 15:46:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:27,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:27,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:27,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:27,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:46:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:27,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:46:27,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:46:27,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:46:28,314 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:28,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302910275] [2021-11-19 15:46:28,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302910275] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:28,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10744948] [2021-11-19 15:46:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:28,314 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:28,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:28,318 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:28,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-19 15:46:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:28,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:46:28,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:29,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:46:29,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:46:29,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10744948] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:29,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108937398] [2021-11-19 15:46:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:46:29,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:46:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:46:29,342 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:46:29,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-19 15:46:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:46:29,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:46:29,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:46:29,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:46:30,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108937398] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:30,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:46:30,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-19 15:46:30,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780365880] [2021-11-19 15:46:30,156 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:46:30,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:46:30,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:46:30,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:46:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:46:30,160 INFO L87 Difference]: Start difference. First operand 329 states and 409 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:46:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:46:30,721 INFO L93 Difference]: Finished difference Result 634 states and 805 transitions. [2021-11-19 15:46:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:46:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2021-11-19 15:46:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:46:30,726 INFO L225 Difference]: With dead ends: 634 [2021-11-19 15:46:30,727 INFO L226 Difference]: Without dead ends: 344 [2021-11-19 15:46:30,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:46:30,729 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 41 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:46:30,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1919 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:46:30,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-19 15:46:30,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 340. [2021-11-19 15:46:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 312 states have (on average 1.2307692307692308) internal successors, (384), 329 states have internal predecessors, (384), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2021-11-19 15:46:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 427 transitions. [2021-11-19 15:46:30,754 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 427 transitions. Word has length 78 [2021-11-19 15:46:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:46:30,755 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 427 transitions. [2021-11-19 15:46:30,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:46:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 427 transitions. [2021-11-19 15:46:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-19 15:46:30,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:46:30,757 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:46:30,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:31,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:31,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:46:31,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:31,382 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:46:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:46:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -589772551, now seen corresponding path program 2 times [2021-11-19 15:46:31,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:46:31,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411400046] [2021-11-19 15:46:31,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:46:31,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:46:31,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:46:31,385 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:46:31,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:46:33,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:46:33,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:46:33,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:46:33,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:46:33,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:46:34,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:46:34,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411400046] [2021-11-19 15:46:34,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411400046] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:34,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [747603623] [2021-11-19 15:46:34,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:46:34,030 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:46:34,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:46:34,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:46:34,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 15:46:37,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:46:37,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:46:37,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:46:37,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:46:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:46:37,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:46:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:46:38,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [747603623] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:46:38,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256552353] [2021-11-19 15:46:38,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:46:38,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:46:38,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:46:38,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:46:38,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb9c5a51-e285-444a-9df4-0e062fdb8cbb/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process