./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e237a09aaa1bc75b51620084d47086dcaad161f8c8500bd0b8b901d1a9d4bb0a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:32:07,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:32:07,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:32:07,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:32:07,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:32:07,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:32:07,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:32:07,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:32:07,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:32:07,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:32:07,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:32:07,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:32:07,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:32:07,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:32:07,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:32:07,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:32:07,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:32:07,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:32:07,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:32:07,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:32:07,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:32:07,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:32:07,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:32:07,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:32:07,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:32:07,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:32:07,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:32:07,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:32:07,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:32:07,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:32:07,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:32:07,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:32:07,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:32:07,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:32:07,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:32:07,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:32:07,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:32:07,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:32:07,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:32:07,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:32:07,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:32:07,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:32:07,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:32:07,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:32:07,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:32:07,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:32:07,527 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:32:07,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:32:07,528 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:32:07,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:32:07,528 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:32:07,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:32:07,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:32:07,529 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:32:07,529 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:32:07,529 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:32:07,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:32:07,529 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:32:07,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:32:07,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:32:07,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:32:07,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:32:07,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:32:07,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:32:07,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:32:07,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:32:07,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:32:07,532 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:32:07,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:32:07,532 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:32:07,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:32:07,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:32:07,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:32:07,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:32:07,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:32:07,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:32:07,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:32:07,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:32:07,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:32:07,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:32:07,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:32:07,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:32:07,535 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_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e237a09aaa1bc75b51620084d47086dcaad161f8c8500bd0b8b901d1a9d4bb0a [2021-11-12 23:32:07,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:32:07,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:32:07,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:32:07,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:32:07,852 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:32:07,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c [2021-11-12 23:32:07,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/e1ca5b509/b1f4c9a7ec5a4858a7cd8730f1db0b84/FLAG2a32b81a5 [2021-11-12 23:32:08,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:32:08,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c [2021-11-12 23:32:08,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/e1ca5b509/b1f4c9a7ec5a4858a7cd8730f1db0b84/FLAG2a32b81a5 [2021-11-12 23:32:08,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/e1ca5b509/b1f4c9a7ec5a4858a7cd8730f1db0b84 [2021-11-12 23:32:08,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:32:08,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:32:08,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:32:08,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:32:08,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:32:08,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:32:08" (1/1) ... [2021-11-12 23:32:08,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3d968a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:08, skipping insertion in model container [2021-11-12 23:32:08,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:32:08" (1/1) ... [2021-11-12 23:32:08,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:32:08,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:32:09,223 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c[20217,20230] [2021-11-12 23:32:09,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:32:09,243 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:32:09,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ed3bee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:09, skipping insertion in model container [2021-11-12 23:32:09,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:32:09,245 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:32:09,247 INFO L158 Benchmark]: Toolchain (without parser) took 413.18ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 47.0MB in the beginning and 80.1MB in the end (delta: -33.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:32:09,248 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory was 64.3MB in the beginning and 64.3MB in the end (delta: 70.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:32:09,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.21ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 46.8MB in the beginning and 80.5MB in the end (delta: -33.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:32:09,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory was 64.3MB in the beginning and 64.3MB in the end (delta: 70.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.21ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 46.8MB in the beginning and 80.5MB in the end (delta: -33.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 510]: 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_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e237a09aaa1bc75b51620084d47086dcaad161f8c8500bd0b8b901d1a9d4bb0a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:32:11,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:32:11,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:32:11,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:32:11,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:32:11,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:32:11,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:32:11,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:32:11,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:32:11,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:32:11,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:32:11,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:32:11,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:32:11,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:32:11,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:32:11,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:32:11,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:32:11,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:32:11,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:32:11,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:32:11,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:32:11,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:32:11,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:32:11,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:32:11,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:32:11,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:32:11,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:32:11,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:32:11,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:32:11,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:32:11,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:32:11,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:32:11,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:32:11,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:32:11,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:32:11,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:32:11,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:32:11,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:32:11,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:32:11,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:32:11,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:32:11,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:32:11,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:32:11,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:32:11,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:32:11,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:32:11,670 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:32:11,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:32:11,670 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:32:11,671 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:32:11,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:32:11,671 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:32:11,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:32:11,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:32:11,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:32:11,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:32:11,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:32:11,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:32:11,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:32:11,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:32:11,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:32:11,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:32:11,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:32:11,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:32:11,676 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:32:11,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:32:11,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:32:11,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:32:11,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:32:11,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:32:11,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:32:11,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:32:11,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:32:11,678 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:32:11,679 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:32:11,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:32:11,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:32:11,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:32:11,680 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_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e237a09aaa1bc75b51620084d47086dcaad161f8c8500bd0b8b901d1a9d4bb0a [2021-11-12 23:32:12,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:32:12,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:32:12,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:32:12,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:32:12,114 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:32:12,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c [2021-11-12 23:32:12,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/54148872a/6089d5e10d624c0884b7147b3a723ad2/FLAG1aaea0ce7 [2021-11-12 23:32:12,793 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:32:12,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c [2021-11-12 23:32:12,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/54148872a/6089d5e10d624c0884b7147b3a723ad2/FLAG1aaea0ce7 [2021-11-12 23:32:13,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/data/54148872a/6089d5e10d624c0884b7147b3a723ad2 [2021-11-12 23:32:13,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:32:13,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:32:13,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:32:13,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:32:13,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:32:13,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:13,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51bee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13, skipping insertion in model container [2021-11-12 23:32:13,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:13,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:32:13,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:32:13,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c[20217,20230] [2021-11-12 23:32:13,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:32:13,674 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:32:13,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:32:13,812 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c[20217,20230] [2021-11-12 23:32:13,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:32:13,830 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:32:13,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/sv-benchmarks/c/product-lines/minepump_spec1_productSimulator.cil.c[20217,20230] [2021-11-12 23:32:13,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:32:13,923 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:32:13,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13 WrapperNode [2021-11-12 23:32:13,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:32:13,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:32:13,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:32:13,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:32:13,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:13,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:32:14,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:32:14,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:32:14,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:32:14,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:32:14,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:32:14,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:32:14,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:32:14,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (1/1) ... [2021-11-12 23:32:14,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:32:14,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:32:14,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:32:14,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:32:14,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:32:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2021-11-12 23:32:14,202 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2021-11-12 23:32:14,202 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-12 23:32:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-12 23:32:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-12 23:32:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-12 23:32:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-12 23:32:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-12 23:32:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2021-11-12 23:32:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2021-11-12 23:32:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-12 23:32:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-12 23:32:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2021-11-12 23:32:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2021-11-12 23:32:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:32:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2021-11-12 23:32:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2021-11-12 23:32:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-12 23:32:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-12 23:32:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-12 23:32:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-12 23:32:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-12 23:32:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-12 23:32:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-12 23:32:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-12 23:32:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:32:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:32:16,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:32:16,411 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:32:16,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:32:16 BoogieIcfgContainer [2021-11-12 23:32:16,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:32:16,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:32:16,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:32:16,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:32:16,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:32:13" (1/3) ... [2021-11-12 23:32:16,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563f7d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:32:16, skipping insertion in model container [2021-11-12 23:32:16,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:32:13" (2/3) ... [2021-11-12 23:32:16,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563f7d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:32:16, skipping insertion in model container [2021-11-12 23:32:16,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:32:16" (3/3) ... [2021-11-12 23:32:16,428 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_productSimulator.cil.c [2021-11-12 23:32:16,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:32:16,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:32:16,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:32:16,514 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:32:16,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:32:16,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 115 states have internal predecessors, (135), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-12 23:32:16,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-12 23:32:16,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:16,546 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:16,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:16,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 735996178, now seen corresponding path program 1 times [2021-11-12 23:32:16,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:16,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306167495] [2021-11-12 23:32:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:16,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:16,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:16,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:16,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:32:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:16,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:32:16,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:17,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:17,252 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:17,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306167495] [2021-11-12 23:32:17,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306167495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:17,254 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:17,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:32:17,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785795034] [2021-11-12 23:32:17,264 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:17,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:32:17,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:32:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:32:17,310 INFO L87 Difference]: Start difference. First operand has 143 states, 99 states have (on average 1.3636363636363635) internal successors, (135), 115 states have internal predecessors, (135), 30 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (30), 25 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:32:17,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:17,386 INFO L93 Difference]: Finished difference Result 263 states and 365 transitions. [2021-11-12 23:32:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:32:17,388 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 53 [2021-11-12 23:32:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:17,407 INFO L225 Difference]: With dead ends: 263 [2021-11-12 23:32:17,408 INFO L226 Difference]: Without dead ends: 134 [2021-11-12 23:32:17,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:32:17,424 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:17,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 6.46ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:32:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-12 23:32:17,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-12 23:32:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 92 states have (on average 1.315217391304348) internal successors, (121), 107 states have internal predecessors, (121), 30 states have call successors, (30), 12 states have call predecessors, (30), 11 states have return successors, (29), 24 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-12 23:32:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 180 transitions. [2021-11-12 23:32:17,499 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 180 transitions. Word has length 53 [2021-11-12 23:32:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:17,502 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 180 transitions. [2021-11-12 23:32:17,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:32:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 180 transitions. [2021-11-12 23:32:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-12 23:32:17,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:17,514 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:17,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:17,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:17,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 976031723, now seen corresponding path program 1 times [2021-11-12 23:32:17,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:17,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205729515] [2021-11-12 23:32:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:17,730 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:17,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:17,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:32:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:32:17,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:18,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:18,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:18,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205729515] [2021-11-12 23:32:18,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205729515] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:18,275 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:18,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:32:18,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560110471] [2021-11-12 23:32:18,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:18,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:32:18,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:32:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:32:18,285 INFO L87 Difference]: Start difference. First operand 134 states and 180 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:32:18,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:18,332 INFO L93 Difference]: Finished difference Result 212 states and 285 transitions. [2021-11-12 23:32:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:32:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2021-11-12 23:32:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:18,342 INFO L225 Difference]: With dead ends: 212 [2021-11-12 23:32:18,342 INFO L226 Difference]: Without dead ends: 125 [2021-11-12 23:32:18,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:32:18,346 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 21 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.32ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:18,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 6.32ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1.50ms Time] [2021-11-12 23:32:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-12 23:32:18,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-11-12 23:32:18,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 101 states have internal predecessors, (114), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-12 23:32:18,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 168 transitions. [2021-11-12 23:32:18,377 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 168 transitions. Word has length 54 [2021-11-12 23:32:18,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:18,378 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 168 transitions. [2021-11-12 23:32:18,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 23:32:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 168 transitions. [2021-11-12 23:32:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-12 23:32:18,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:18,384 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:18,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:18,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:18,597 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:18,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash 471750439, now seen corresponding path program 1 times [2021-11-12 23:32:18,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:18,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974693419] [2021-11-12 23:32:18,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:18,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:18,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:18,601 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:18,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:32:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:18,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:32:18,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:19,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:19,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:19,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974693419] [2021-11-12 23:32:19,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974693419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:19,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:19,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-12 23:32:19,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405430644] [2021-11-12 23:32:19,262 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:19,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:32:19,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:32:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:32:19,264 INFO L87 Difference]: Start difference. First operand 125 states and 168 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:32:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:19,472 INFO L93 Difference]: Finished difference Result 373 states and 508 transitions. [2021-11-12 23:32:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:32:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 59 [2021-11-12 23:32:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:19,477 INFO L225 Difference]: With dead ends: 373 [2021-11-12 23:32:19,477 INFO L226 Difference]: Without dead ends: 270 [2021-11-12 23:32:19,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:32:19,479 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 338 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 163.39ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:19,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [338 Valid, 352 Invalid, 100 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [52 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 163.39ms Time] [2021-11-12 23:32:19,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-12 23:32:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 264. [2021-11-12 23:32:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 184 states have (on average 1.3695652173913044) internal successors, (252), 216 states have internal predecessors, (252), 53 states have call successors, (53), 26 states have call predecessors, (53), 26 states have return successors, (54), 41 states have call predecessors, (54), 53 states have call successors, (54) [2021-11-12 23:32:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 359 transitions. [2021-11-12 23:32:19,518 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 359 transitions. Word has length 59 [2021-11-12 23:32:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:19,519 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 359 transitions. [2021-11-12 23:32:19,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-12 23:32:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 359 transitions. [2021-11-12 23:32:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-12 23:32:19,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:19,522 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:19,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:32:19,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:19,734 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash 391619185, now seen corresponding path program 1 times [2021-11-12 23:32:19,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:19,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248040897] [2021-11-12 23:32:19,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:19,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:19,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:19,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:32:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:19,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:32:19,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:20,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:20,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:20,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248040897] [2021-11-12 23:32:20,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248040897] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:20,551 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:20,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 7 [2021-11-12 23:32:20,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076646231] [2021-11-12 23:32:20,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:20,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:32:20,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:32:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:32:20,553 INFO L87 Difference]: Start difference. First operand 264 states and 359 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-12 23:32:21,816 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:22,073 INFO L93 Difference]: Finished difference Result 749 states and 1033 transitions. [2021-11-12 23:32:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:32:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 63 [2021-11-12 23:32:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:22,088 INFO L225 Difference]: With dead ends: 749 [2021-11-12 23:32:22,088 INFO L226 Difference]: Without dead ends: 507 [2021-11-12 23:32:22,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:32:22,091 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 118 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1390.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1440.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:22,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 818 Invalid, 91 Unknown, 0 Unchecked, 7.08ms Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 1440.27ms Time] [2021-11-12 23:32:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-12 23:32:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 498. [2021-11-12 23:32:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 346 states have (on average 1.3670520231213872) internal successors, (473), 409 states have internal predecessors, (473), 100 states have call successors, (100), 51 states have call predecessors, (100), 51 states have return successors, (105), 76 states have call predecessors, (105), 100 states have call successors, (105) [2021-11-12 23:32:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 678 transitions. [2021-11-12 23:32:22,190 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 678 transitions. Word has length 63 [2021-11-12 23:32:22,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:22,193 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 678 transitions. [2021-11-12 23:32:22,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-11-12 23:32:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 678 transitions. [2021-11-12 23:32:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:32:22,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:22,198 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:22,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:22,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:22,411 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:22,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash -193199923, now seen corresponding path program 1 times [2021-11-12 23:32:22,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:22,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401766492] [2021-11-12 23:32:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:22,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:22,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:22,415 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:22,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:32:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:22,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:32:22,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:22,866 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:22,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:23,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:23,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401766492] [2021-11-12 23:32:23,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401766492] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:23,079 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:23,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 5 [2021-11-12 23:32:23,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517824695] [2021-11-12 23:32:23,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:23,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:32:23,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:23,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:32:23,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:32:23,081 INFO L87 Difference]: Start difference. First operand 498 states and 678 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:32:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:23,234 INFO L93 Difference]: Finished difference Result 1219 states and 1724 transitions. [2021-11-12 23:32:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:32:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 67 [2021-11-12 23:32:23,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:23,242 INFO L225 Difference]: With dead ends: 1219 [2021-11-12 23:32:23,242 INFO L226 Difference]: Without dead ends: 743 [2021-11-12 23:32:23,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:32:23,246 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 93 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.43ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.61ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:23,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 643 Invalid, 43 Unknown, 0 Unchecked, 4.43ms Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 51.61ms Time] [2021-11-12 23:32:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-12 23:32:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 724. [2021-11-12 23:32:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 512 states have (on average 1.3203125) internal successors, (676), 581 states have internal predecessors, (676), 130 states have call successors, (130), 81 states have call predecessors, (130), 81 states have return successors, (179), 120 states have call predecessors, (179), 130 states have call successors, (179) [2021-11-12 23:32:23,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 985 transitions. [2021-11-12 23:32:23,318 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 985 transitions. Word has length 67 [2021-11-12 23:32:23,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:23,318 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 985 transitions. [2021-11-12 23:32:23,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-12 23:32:23,319 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 985 transitions. [2021-11-12 23:32:23,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:32:23,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:23,322 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:23,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:23,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:23,539 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:23,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2095005, now seen corresponding path program 1 times [2021-11-12 23:32:23,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:23,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603592849] [2021-11-12 23:32:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:23,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:23,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:23,542 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:23,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:32:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:23,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:32:23,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:23,949 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:23,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:24,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:24,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603592849] [2021-11-12 23:32:24,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603592849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:24,202 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:24,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:32:24,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199980302] [2021-11-12 23:32:24,203 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:24,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:32:24,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:32:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:32:24,205 INFO L87 Difference]: Start difference. First operand 724 states and 985 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:32:24,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:24,315 INFO L93 Difference]: Finished difference Result 1466 states and 2099 transitions. [2021-11-12 23:32:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:32:24,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2021-11-12 23:32:24,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:24,324 INFO L225 Difference]: With dead ends: 1466 [2021-11-12 23:32:24,325 INFO L226 Difference]: Without dead ends: 764 [2021-11-12 23:32:24,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:32:24,333 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 14 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.51ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:24,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 675 Invalid, 17 Unknown, 0 Unchecked, 6.51ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 19.76ms Time] [2021-11-12 23:32:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-11-12 23:32:24,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 736. [2021-11-12 23:32:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 524 states have (on average 1.3129770992366412) internal successors, (688), 593 states have internal predecessors, (688), 130 states have call successors, (130), 81 states have call predecessors, (130), 81 states have return successors, (179), 120 states have call predecessors, (179), 130 states have call successors, (179) [2021-11-12 23:32:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 997 transitions. [2021-11-12 23:32:24,411 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 997 transitions. Word has length 87 [2021-11-12 23:32:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:24,412 INFO L470 AbstractCegarLoop]: Abstraction has 736 states and 997 transitions. [2021-11-12 23:32:24,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:32:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 997 transitions. [2021-11-12 23:32:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:32:24,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:24,416 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:24,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:24,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:24,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:24,630 INFO L85 PathProgramCache]: Analyzing trace with hash 64134619, now seen corresponding path program 1 times [2021-11-12 23:32:24,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:24,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982413276] [2021-11-12 23:32:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:24,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:24,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:24,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:24,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:32:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:24,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:32:24,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:25,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:25,276 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:25,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982413276] [2021-11-12 23:32:25,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982413276] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:25,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:25,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:32:25,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249097737] [2021-11-12 23:32:25,277 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:25,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:32:25,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:32:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:32:25,279 INFO L87 Difference]: Start difference. First operand 736 states and 997 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:32:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:25,369 INFO L93 Difference]: Finished difference Result 1502 states and 2139 transitions. [2021-11-12 23:32:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:32:25,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2021-11-12 23:32:25,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:25,378 INFO L225 Difference]: With dead ends: 1502 [2021-11-12 23:32:25,378 INFO L226 Difference]: Without dead ends: 788 [2021-11-12 23:32:25,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:32:25,386 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 22 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.93ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:25,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 695 Invalid, 17 Unknown, 0 Unchecked, 3.93ms Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 23.22ms Time] [2021-11-12 23:32:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-11-12 23:32:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 744. [2021-11-12 23:32:25,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 532 states have (on average 1.3082706766917294) internal successors, (696), 601 states have internal predecessors, (696), 130 states have call successors, (130), 81 states have call predecessors, (130), 81 states have return successors, (179), 120 states have call predecessors, (179), 130 states have call successors, (179) [2021-11-12 23:32:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1005 transitions. [2021-11-12 23:32:25,452 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1005 transitions. Word has length 87 [2021-11-12 23:32:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:25,453 INFO L470 AbstractCegarLoop]: Abstraction has 744 states and 1005 transitions. [2021-11-12 23:32:25,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:32:25,454 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1005 transitions. [2021-11-12 23:32:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:32:25,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:25,462 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:25,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:25,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:25,675 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:25,676 INFO L85 PathProgramCache]: Analyzing trace with hash -445338471, now seen corresponding path program 1 times [2021-11-12 23:32:25,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:25,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782337324] [2021-11-12 23:32:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:25,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:25,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:25,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:32:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:25,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:32:25,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:32:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:26,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:32:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-12 23:32:26,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:32:26,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782337324] [2021-11-12 23:32:26,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782337324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:26,465 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:26,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 4] imperfect sequences [] total 5 [2021-11-12 23:32:26,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389793018] [2021-11-12 23:32:26,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:26,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:32:26,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:26,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:32:26,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:32:26,467 INFO L87 Difference]: Start difference. First operand 744 states and 1005 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-12 23:32:28,136 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:28,624 INFO L93 Difference]: Finished difference Result 2852 states and 4136 transitions. [2021-11-12 23:32:28,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:32:28,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 87 [2021-11-12 23:32:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:28,643 INFO L225 Difference]: With dead ends: 2852 [2021-11-12 23:32:28,644 INFO L226 Difference]: Without dead ends: 2130 [2021-11-12 23:32:28,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:32:28,651 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 320 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1897.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.87ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1982.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:28,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 659 Invalid, 209 Unknown, 0 Unchecked, 5.87ms Time], IncrementalHoareTripleChecker [34 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1982.91ms Time] [2021-11-12 23:32:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2130 states. [2021-11-12 23:32:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2130 to 2116. [2021-11-12 23:32:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1532 states have (on average 1.2911227154046998) internal successors, (1978), 1691 states have internal predecessors, (1978), 348 states have call successors, (348), 243 states have call predecessors, (348), 235 states have return successors, (584), 328 states have call predecessors, (584), 348 states have call successors, (584) [2021-11-12 23:32:28,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2910 transitions. [2021-11-12 23:32:28,855 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2910 transitions. Word has length 87 [2021-11-12 23:32:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:28,856 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 2910 transitions. [2021-11-12 23:32:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-12 23:32:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2910 transitions. [2021-11-12 23:32:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-12 23:32:28,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:28,861 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:28,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:29,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:29,075 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:29,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1958821133, now seen corresponding path program 1 times [2021-11-12 23:32:29,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:29,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547509518] [2021-11-12 23:32:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:29,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:29,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:29,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:32:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:32:30,197 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:32:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:32:32,002 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:32:32,002 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:32:32,003 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:32:32,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:32,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:32,226 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:32,229 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:32:32,304 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:32:32,306 INFO L158 Benchmark]: Toolchain (without parser) took 19172.12ms. Allocated memory was 58.7MB in the beginning and 130.0MB in the end (delta: 71.3MB). Free memory was 35.5MB in the beginning and 56.2MB in the end (delta: -20.7MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2021-11-12 23:32:32,306 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:32:32,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 788.31ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 35.3MB in the beginning and 53.4MB in the end (delta: -18.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:32:32,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.70ms. Allocated memory is still 88.1MB. Free memory was 53.4MB in the beginning and 50.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:32:32,308 INFO L158 Benchmark]: Boogie Preprocessor took 96.40ms. Allocated memory is still 88.1MB. Free memory was 50.6MB in the beginning and 69.8MB in the end (delta: -19.2MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-12 23:32:32,308 INFO L158 Benchmark]: RCFGBuilder took 2309.30ms. Allocated memory is still 88.1MB. Free memory was 69.8MB in the beginning and 41.3MB in the end (delta: 28.5MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2021-11-12 23:32:32,308 INFO L158 Benchmark]: TraceAbstraction took 15887.18ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 40.9MB in the beginning and 56.2MB in the end (delta: -15.3MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2021-11-12 23:32:32,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 58.7MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 788.31ms. Allocated memory was 58.7MB in the beginning and 88.1MB in the end (delta: 29.4MB). Free memory was 35.3MB in the beginning and 53.4MB in the end (delta: -18.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.70ms. Allocated memory is still 88.1MB. Free memory was 53.4MB in the beginning and 50.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.40ms. Allocated memory is still 88.1MB. Free memory was 50.6MB in the beginning and 69.8MB in the end (delta: -19.2MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * RCFGBuilder took 2309.30ms. Allocated memory is still 88.1MB. Free memory was 69.8MB in the beginning and 41.3MB in the end (delta: 28.5MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15887.18ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 40.9MB in the beginning and 56.2MB in the end (delta: -15.3MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:32:32,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d73d6c40-1f25-4a20-a9c1-13d7f2286047/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null