./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan --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 b5076d679b37839f733750e31fc3798a3b068ae0 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan --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 b5076d679b37839f733750e31fc3798a3b068ae0 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:58,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:58,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:58,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:58,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:58,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:58,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:58,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:58,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:58,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:58,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:58,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:58,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:58,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:58,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:58,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:58,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:58,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:58,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:58,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:58,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:58,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:58,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:58,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:58,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:58,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:58,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:58,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:58,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:58,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:58,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:58,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:58,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:58,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:58,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:58,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:58,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:58,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:58,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:58,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:58,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:58,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:58,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:58,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:58,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:58,598 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:58,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:58,598 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:58,598 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:58,598 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:58,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:58,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:58,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:58,599 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:58,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:58,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:58,600 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:58,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:58,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:58,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:58,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:58,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:58,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:58,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:58,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:58,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:58,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:58,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:58,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:58,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:58,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:58,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:58,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:58,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:58,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:58,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:58,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:58,605 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:58,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:58,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:58,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:58,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:58,606 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-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5076d679b37839f733750e31fc3798a3b068ae0 [2020-11-28 07:42:58,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:58,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:58,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:58,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:58,884 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:58,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2020-11-28 07:42:58,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/194ddcb67/1c5b235ddc9f4511acb95186ade6535a/FLAG95022a96d [2020-11-28 07:42:59,442 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:59,442 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2020-11-28 07:42:59,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/194ddcb67/1c5b235ddc9f4511acb95186ade6535a/FLAG95022a96d [2020-11-28 07:42:59,766 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/194ddcb67/1c5b235ddc9f4511acb95186ade6535a [2020-11-28 07:42:59,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:59,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:59,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:59,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:59,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:59,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:59" (1/1) ... [2020-11-28 07:42:59,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0a79b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:59, skipping insertion in model container [2020-11-28 07:42:59,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:59" (1/1) ... [2020-11-28 07:42:59,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:59,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:00,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:00,166 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) [2020-11-28 07:43:00,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@506ac811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:00, skipping insertion in model container [2020-11-28 07:43:00,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:00,167 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-28 07:43:00,173 INFO L168 Benchmark]: Toolchain (without parser) took 398.30 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.8 MB in the beginning and 86.6 MB in the end (delta: -22.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:00,174 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:00,176 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.86 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.6 MB in the beginning and 86.6 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:00,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 395.86 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 63.6 MB in the beginning and 86.6 MB in the end (delta: -23.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 540]: 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... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:02,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:02,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:02,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:02,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:02,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:02,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:02,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:02,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:02,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:02,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:02,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:02,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:02,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:02,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:02,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:02,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:02,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:02,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:02,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:02,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:02,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:02,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:02,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:02,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:02,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:02,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:02,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:02,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:02,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:02,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:02,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:02,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:02,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:02,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:02,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:02,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:02,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:02,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:02,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:02,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:02,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:43:02,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:02,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:02,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:02,741 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:02,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:02,742 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:02,742 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:02,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:02,742 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:02,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:02,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:02,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:02,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:02,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:02,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:02,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:02,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:02,746 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:43:02,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:43:02,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:02,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:02,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:02,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:02,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:02,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:43:02,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:02,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:02,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:02,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:02,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:02,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:02,762 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:43:02,762 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:43:02,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:02,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:02,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:02,763 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-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5076d679b37839f733750e31fc3798a3b068ae0 [2020-11-28 07:43:03,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:03,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:03,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:03,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:03,224 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:03,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2020-11-28 07:43:03,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/07df1bfb4/c5264a4486414678a15e1441959ef76f/FLAG926dcaf2f [2020-11-28 07:43:03,947 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:03,947 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/sv-benchmarks/c/product-lines/minepump_spec2_product33.cil.c [2020-11-28 07:43:03,965 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/07df1bfb4/c5264a4486414678a15e1441959ef76f/FLAG926dcaf2f [2020-11-28 07:43:04,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/data/07df1bfb4/c5264a4486414678a15e1441959ef76f [2020-11-28 07:43:04,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:04,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:04,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:04,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:04,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:04,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:04,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c9b499c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04, skipping insertion in model container [2020-11-28 07:43:04,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:04,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:04,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:04,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:04,689 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-28 07:43:04,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:04,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:04,849 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:04,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:04,966 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:04,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04 WrapperNode [2020-11-28 07:43:04,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:04,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:04,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:04,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:04,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:05,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:05,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:05,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:05,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... [2020-11-28 07:43:05,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:05,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:05,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:05,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:05,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:43:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:07,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:07,804 INFO L298 CfgBuilder]: Removed 104 assume(true) statements. [2020-11-28 07:43:07,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07 BoogieIcfgContainer [2020-11-28 07:43:07,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:07,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:07,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:07,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:07,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:04" (1/3) ... [2020-11-28 07:43:07,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3f5a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:07, skipping insertion in model container [2020-11-28 07:43:07,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:04" (2/3) ... [2020-11-28 07:43:07,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b3f5a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:07, skipping insertion in model container [2020-11-28 07:43:07,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07" (3/3) ... [2020-11-28 07:43:07,821 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product33.cil.c [2020-11-28 07:43:07,837 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:07,845 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-28 07:43:07,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 07:43:07,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:07,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:07,893 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:07,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:07,894 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:07,894 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:07,894 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:07,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:43:07,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:43:07,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:07,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:07,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:07,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:07,916 INFO L82 PathProgramCache]: Analyzing trace with hash 495161476, now seen corresponding path program 1 times [2020-11-28 07:43:07,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:07,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152855168] [2020-11-28 07:43:07,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:08,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:43:08,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152855168] [2020-11-28 07:43:08,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:08,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:43:08,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578744486] [2020-11-28 07:43:08,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:08,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:08,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:08,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:08,256 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 2 states. [2020-11-28 07:43:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:08,290 INFO L93 Difference]: Finished difference Result 160 states and 243 transitions. [2020-11-28 07:43:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:08,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-11-28 07:43:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:08,305 INFO L225 Difference]: With dead ends: 160 [2020-11-28 07:43:08,305 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 07:43:08,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 07:43:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-11-28 07:43:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 07:43:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 112 transitions. [2020-11-28 07:43:08,373 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 112 transitions. Word has length 18 [2020-11-28 07:43:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:08,373 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 112 transitions. [2020-11-28 07:43:08,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:08,374 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 112 transitions. [2020-11-28 07:43:08,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:43:08,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:08,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:08,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,592 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash 276325507, now seen corresponding path program 1 times [2020-11-28 07:43:08,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:08,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293868101] [2020-11-28 07:43:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:08,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:08,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:08,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293868101] [2020-11-28 07:43:08,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:08,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:08,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423411689] [2020-11-28 07:43:08,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:08,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:08,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:08,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:08,827 INFO L87 Difference]: Start difference. First operand 78 states and 112 transitions. Second operand 4 states. [2020-11-28 07:43:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:08,852 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2020-11-28 07:43:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:08,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-28 07:43:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:08,856 INFO L225 Difference]: With dead ends: 78 [2020-11-28 07:43:08,856 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 07:43:08,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 07:43:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 07:43:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 07:43:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2020-11-28 07:43:08,869 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 19 [2020-11-28 07:43:08,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:08,872 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2020-11-28 07:43:08,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:08,883 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2020-11-28 07:43:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 07:43:08,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:08,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:09,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:43:09,099 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:09,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:09,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1153900874, now seen corresponding path program 1 times [2020-11-28 07:43:09,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:09,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808919838] [2020-11-28 07:43:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:09,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:09,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808919838] [2020-11-28 07:43:09,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:09,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-28 07:43:09,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178520465] [2020-11-28 07:43:09,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:09,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:09,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:09,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:09,322 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 4 states. [2020-11-28 07:43:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:09,336 INFO L93 Difference]: Finished difference Result 65 states and 95 transitions. [2020-11-28 07:43:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:09,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-28 07:43:09,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:09,340 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:43:09,340 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 07:43:09,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 07:43:09,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 07:43:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 07:43:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2020-11-28 07:43:09,346 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 24 [2020-11-28 07:43:09,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:09,347 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2020-11-28 07:43:09,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2020-11-28 07:43:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 07:43:09,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:09,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:09,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:43:09,549 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1264883623, now seen corresponding path program 1 times [2020-11-28 07:43:09,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:09,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174759381] [2020-11-28 07:43:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:09,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:09,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:09,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174759381] [2020-11-28 07:43:09,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:09,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:43:09,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157250718] [2020-11-28 07:43:09,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:43:09,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:09,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:43:09,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:09,771 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand 3 states. [2020-11-28 07:43:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:09,823 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2020-11-28 07:43:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:09,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-28 07:43:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:09,824 INFO L225 Difference]: With dead ends: 87 [2020-11-28 07:43:09,824 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 07:43:09,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 07:43:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-11-28 07:43:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-28 07:43:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2020-11-28 07:43:09,833 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 25 [2020-11-28 07:43:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:09,833 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2020-11-28 07:43:09,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:43:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2020-11-28 07:43:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 07:43:09,834 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:09,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:10,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:43:10,049 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:10,050 INFO L82 PathProgramCache]: Analyzing trace with hash -703728504, now seen corresponding path program 1 times [2020-11-28 07:43:10,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:10,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171324230] [2020-11-28 07:43:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:10,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:10,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:10,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:10,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:10,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171324230] [2020-11-28 07:43:10,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:10,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:43:10,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289945848] [2020-11-28 07:43:10,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:10,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:10,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:10,301 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand 5 states. [2020-11-28 07:43:10,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:10,384 INFO L93 Difference]: Finished difference Result 145 states and 205 transitions. [2020-11-28 07:43:10,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:10,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 07:43:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:10,390 INFO L225 Difference]: With dead ends: 145 [2020-11-28 07:43:10,390 INFO L226 Difference]: Without dead ends: 96 [2020-11-28 07:43:10,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-28 07:43:10,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 59. [2020-11-28 07:43:10,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-28 07:43:10,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2020-11-28 07:43:10,402 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 31 [2020-11-28 07:43:10,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:10,402 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2020-11-28 07:43:10,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2020-11-28 07:43:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 07:43:10,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:10,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:10,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:43:10,624 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 229735205, now seen corresponding path program 1 times [2020-11-28 07:43:10,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:10,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804984133] [2020-11-28 07:43:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:10,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:10,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:10,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:10,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804984133] [2020-11-28 07:43:10,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:10,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:43:10,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64520635] [2020-11-28 07:43:10,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:10,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:10,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:10,889 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand 5 states. [2020-11-28 07:43:11,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:11,010 INFO L93 Difference]: Finished difference Result 275 states and 393 transitions. [2020-11-28 07:43:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:43:11,011 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 07:43:11,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:11,013 INFO L225 Difference]: With dead ends: 275 [2020-11-28 07:43:11,013 INFO L226 Difference]: Without dead ends: 223 [2020-11-28 07:43:11,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:43:11,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-11-28 07:43:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 103. [2020-11-28 07:43:11,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-28 07:43:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 142 transitions. [2020-11-28 07:43:11,031 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 142 transitions. Word has length 31 [2020-11-28 07:43:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:11,032 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 142 transitions. [2020-11-28 07:43:11,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:11,032 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 142 transitions. [2020-11-28 07:43:11,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:43:11,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:11,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:11,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:43:11,253 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:11,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1892298141, now seen corresponding path program 1 times [2020-11-28 07:43:11,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:11,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110194864] [2020-11-28 07:43:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:11,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:11,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:11,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:11,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110194864] [2020-11-28 07:43:11,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:11,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:43:11,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681029326] [2020-11-28 07:43:11,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:11,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:11,494 INFO L87 Difference]: Start difference. First operand 103 states and 142 transitions. Second operand 5 states. [2020-11-28 07:43:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:11,654 INFO L93 Difference]: Finished difference Result 376 states and 523 transitions. [2020-11-28 07:43:11,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:43:11,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-11-28 07:43:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:11,656 INFO L225 Difference]: With dead ends: 376 [2020-11-28 07:43:11,657 INFO L226 Difference]: Without dead ends: 280 [2020-11-28 07:43:11,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:43:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-11-28 07:43:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 102. [2020-11-28 07:43:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-28 07:43:11,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 139 transitions. [2020-11-28 07:43:11,684 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 139 transitions. Word has length 32 [2020-11-28 07:43:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:11,685 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 139 transitions. [2020-11-28 07:43:11,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 139 transitions. [2020-11-28 07:43:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:43:11,688 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:11,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:11,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:43:11,905 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:11,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:11,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1659899010, now seen corresponding path program 1 times [2020-11-28 07:43:11,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:11,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466637712] [2020-11-28 07:43:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:12,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 07:43:12,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:12,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:12,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466637712] [2020-11-28 07:43:12,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:12,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:43:12,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438395389] [2020-11-28 07:43:12,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:12,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:12,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:12,150 INFO L87 Difference]: Start difference. First operand 102 states and 139 transitions. Second operand 6 states. [2020-11-28 07:43:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:12,217 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2020-11-28 07:43:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:43:12,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-28 07:43:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:12,219 INFO L225 Difference]: With dead ends: 279 [2020-11-28 07:43:12,219 INFO L226 Difference]: Without dead ends: 184 [2020-11-28 07:43:12,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-11-28 07:43:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 106. [2020-11-28 07:43:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-28 07:43:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2020-11-28 07:43:12,238 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 143 transitions. Word has length 32 [2020-11-28 07:43:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:12,239 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 143 transitions. [2020-11-28 07:43:12,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 143 transitions. [2020-11-28 07:43:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-28 07:43:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:12,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:12,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:43:12,457 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:12,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1073092996, now seen corresponding path program 1 times [2020-11-28 07:43:12,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:12,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990121000] [2020-11-28 07:43:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:12,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:12,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:12,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:12,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:12,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990121000] [2020-11-28 07:43:12,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:12,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-28 07:43:12,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089164801] [2020-11-28 07:43:12,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:12,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:12,680 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. Second operand 4 states. [2020-11-28 07:43:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:12,741 INFO L93 Difference]: Finished difference Result 338 states and 459 transitions. [2020-11-28 07:43:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:12,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-28 07:43:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:12,744 INFO L225 Difference]: With dead ends: 338 [2020-11-28 07:43:12,744 INFO L226 Difference]: Without dead ends: 239 [2020-11-28 07:43:12,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-11-28 07:43:12,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 189. [2020-11-28 07:43:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-11-28 07:43:12,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 254 transitions. [2020-11-28 07:43:12,767 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 254 transitions. Word has length 32 [2020-11-28 07:43:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:12,767 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 254 transitions. [2020-11-28 07:43:12,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:12,768 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 254 transitions. [2020-11-28 07:43:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 07:43:12,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:12,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:12,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-28 07:43:12,985 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:12,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:12,986 INFO L82 PathProgramCache]: Analyzing trace with hash -389810492, now seen corresponding path program 1 times [2020-11-28 07:43:12,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:12,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789620724] [2020-11-28 07:43:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:13,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:43:13,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:13,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:13,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789620724] [2020-11-28 07:43:13,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:13,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:43:13,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379346717] [2020-11-28 07:43:13,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:43:13,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:43:13,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:43:13,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:13,256 INFO L87 Difference]: Start difference. First operand 189 states and 254 transitions. Second operand 3 states. [2020-11-28 07:43:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:13,330 INFO L93 Difference]: Finished difference Result 307 states and 412 transitions. [2020-11-28 07:43:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:43:13,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-11-28 07:43:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:13,333 INFO L225 Difference]: With dead ends: 307 [2020-11-28 07:43:13,333 INFO L226 Difference]: Without dead ends: 305 [2020-11-28 07:43:13,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:43:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-11-28 07:43:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 239. [2020-11-28 07:43:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-11-28 07:43:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 328 transitions. [2020-11-28 07:43:13,370 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 328 transitions. Word has length 33 [2020-11-28 07:43:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:13,371 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 328 transitions. [2020-11-28 07:43:13,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:43:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 328 transitions. [2020-11-28 07:43:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 07:43:13,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:13,372 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:13,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-28 07:43:13,589 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:13,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:13,590 INFO L82 PathProgramCache]: Analyzing trace with hash 149557046, now seen corresponding path program 1 times [2020-11-28 07:43:13,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:43:13,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155802673] [2020-11-28 07:43:13,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-28 07:43:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:14,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:43:16,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:43:16,554 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:43:16,555 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:43:16,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-28 07:43:16,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:43:16 BoogieIcfgContainer [2020-11-28 07:43:16,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:43:16,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:43:16,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:43:16,968 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:43:16,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:07" (3/4) ... [2020-11-28 07:43:16,971 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:43:17,123 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_67ad6820-9177-48a4-a73b-cde921556b79/bin/utaipan/witness.graphml [2020-11-28 07:43:17,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:43:17,125 INFO L168 Benchmark]: Toolchain (without parser) took 12902.07 ms. Allocated memory was 54.5 MB in the beginning and 117.4 MB in the end (delta: 62.9 MB). Free memory was 31.0 MB in the beginning and 35.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,125 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:43:17,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.73 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 30.7 MB in the beginning and 47.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 106.79 ms. Allocated memory is still 79.7 MB. Free memory was 47.6 MB in the beginning and 44.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,127 INFO L168 Benchmark]: Boogie Preprocessor took 72.88 ms. Allocated memory is still 79.7 MB. Free memory was 44.5 MB in the beginning and 61.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,127 INFO L168 Benchmark]: RCFGBuilder took 2658.99 ms. Allocated memory is still 79.7 MB. Free memory was 61.1 MB in the beginning and 54.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,128 INFO L168 Benchmark]: TraceAbstraction took 9157.27 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 54.8 MB in the beginning and 55.6 MB in the end (delta: -867.6 kB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,128 INFO L168 Benchmark]: Witness Printer took 155.18 ms. Allocated memory is still 117.4 MB. Free memory was 55.6 MB in the beginning and 35.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:43:17,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 54.5 MB. Free memory was 36.6 MB in the beginning and 36.5 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 743.73 ms. Allocated memory was 54.5 MB in the beginning and 79.7 MB in the end (delta: 25.2 MB). Free memory was 30.7 MB in the beginning and 47.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 106.79 ms. Allocated memory is still 79.7 MB. Free memory was 47.6 MB in the beginning and 44.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.88 ms. Allocated memory is still 79.7 MB. Free memory was 44.5 MB in the beginning and 61.1 MB in the end (delta: -16.6 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2658.99 ms. Allocated memory is still 79.7 MB. Free memory was 61.1 MB in the beginning and 54.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9157.27 ms. Allocated memory was 79.7 MB in the beginning and 117.4 MB in the end (delta: 37.7 MB). Free memory was 54.8 MB in the beginning and 55.6 MB in the end (delta: -867.6 kB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. * Witness Printer took 155.18 ms. Allocated memory is still 117.4 MB. Free memory was 55.6 MB in the beginning and 35.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L87] int waterLevel = 1; [L88] int methaneLevelCritical = 0; [L181] int cleanupTimeShifts = 4; [L294] int pumpRunning = 0; [L295] int systemActive = 1; [L681] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L878] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L259] int retValue_acc ; [L260] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L71] int retValue_acc ; [L74] retValue_acc = 1 [L75] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L266] tmp = valid_product() [L268] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L883] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L448] int splverifierCounter ; [L449] int tmp ; [L450] int tmp___0 ; [L451] int tmp___1 ; [L452] int tmp___2 ; [L455] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L457] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L459] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L465] tmp = __VERIFIER_nondet_int() [L467] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L105] COND TRUE waterLevel < 2 [L106] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L475] tmp___0 = __VERIFIER_nondet_int() [L477] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L117] COND FALSE !(\read(methaneLevelCritical)) [L120] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L485] tmp___2 = __VERIFIER_nondet_int() [L487] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L302] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L309] COND TRUE \read(systemActive) [L331] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L334] COND TRUE ! pumpRunning [L428] int retValue_acc ; [L429] int tmp ; [L430] int tmp___0 ; [L167] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L170] COND FALSE !(waterLevel < 2) [L174] retValue_acc = 0 [L175] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L434] tmp = isHighWaterSensorDry() [L436] COND FALSE !(\read(tmp)) [L439] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] retValue_acc = tmp___0 [L442] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L336] tmp = isHighWaterLevel() [L338] COND TRUE \read(tmp) [L359] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L888] int tmp ; [L889] int tmp___0 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L383] int retValue_acc ; [L386] retValue_acc = pumpRunning [L387] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L900] COND FALSE !(\read(methAndRunningLastTime)) [L905] methAndRunningLastTime = 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L457] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L459] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L465] tmp = __VERIFIER_nondet_int() [L467] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L475] tmp___0 = __VERIFIER_nondet_int() [L477] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L485] tmp___2 = __VERIFIER_nondet_int() [L487] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L302] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L93] COND TRUE waterLevel > 0 [L94] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L309] COND TRUE \read(systemActive) [L331] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L334] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L888] int tmp ; [L889] int tmp___0 ; [L126] int retValue_acc ; [L129] retValue_acc = methaneLevelCritical [L130] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L893] tmp = isMethaneLevelCritical() [L895] COND TRUE \read(tmp) [L383] int retValue_acc ; [L386] retValue_acc = pumpRunning [L387] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L897] tmp___0 = isPumpRunning() [L899] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L900] COND TRUE \read(methAndRunningLastTime) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L3] __assert_fail("0", "minepump_spec2_product33.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.8s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 667 SDtfs, 748 SDslu, 1059 SDs, 0 SdLazy, 120 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 550 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 531 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 328 NumberOfCodeBlocks, 328 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 534 ConstructedInterpolants, 0 QuantifiedInterpolants, 30088 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2060 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...