./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-sets/test_add-1.i --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_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb ............................................................................................................................................ 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_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-22 13:00:06,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:06,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:06,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:06,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:06,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:06,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:06,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:06,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:06,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:06,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:06,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:06,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:06,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:06,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:06,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:06,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:06,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:06,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:06,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:06,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:06,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:06,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:06,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:06,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:06,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:06,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:06,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:06,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:06,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:06,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:06,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:06,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:06,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:06,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:06,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:06,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:06,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:06,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:06,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:06,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:06,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:00:06,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:06,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:06,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:06,627 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:06,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:06,628 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:06,628 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:00:06,628 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:06,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:06,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:00:06,630 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:00:06,630 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:06,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:00:06,631 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:00:06,631 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:00:06,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:06,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:06,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:00:06,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:06,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:06,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:00:06,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:06,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:00:06,634 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:06,634 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:06,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:00:06,634 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:06,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:00:06,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:06,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:06,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:06,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:06,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:06,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:06,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:00:06,638 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:00:06,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:00:06,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:00:06,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:06,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:06,639 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_fd944b8c-34b0-48ae-8c02-a1475108802a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb [2020-11-22 13:00:06,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:06,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:06,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:06,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:06,933 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:06,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-22 13:00:07,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/2e75873b7/ce6eec6ca4d549ef832d40d8faf7d41a/FLAGb2d150b4f [2020-11-22 13:00:07,546 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:07,547 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-22 13:00:07,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/2e75873b7/ce6eec6ca4d549ef832d40d8faf7d41a/FLAGb2d150b4f [2020-11-22 13:00:07,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/2e75873b7/ce6eec6ca4d549ef832d40d8faf7d41a [2020-11-22 13:00:07,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:07,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:07,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:07,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:07,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:07,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:07" (1/1) ... [2020-11-22 13:00:07,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cfad8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:07, skipping insertion in model container [2020-11-22 13:00:07,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:07" (1/1) ... [2020-11-22 13:00:07,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:07,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:08,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:08,263 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) [2020-11-22 13:00:08,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c89f78b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:08, skipping insertion in model container [2020-11-22 13:00:08,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:08,265 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:00:08,267 INFO L168 Benchmark]: Toolchain (without parser) took 423.50 ms. Allocated memory is still 88.1 MB. Free memory was 53.1 MB in the beginning and 62.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:08,268 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:08,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.04 ms. Allocated memory is still 88.1 MB. Free memory was 52.8 MB in the beginning and 62.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:08,270 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.04 ms. Allocated memory is still 88.1 MB. Free memory was 52.8 MB in the beginning and 62.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 635]: 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 [2020-11-22 13:00:10,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:00:10,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:00:10,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:00:10,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:00:10,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:00:10,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:00:10,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:00:10,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:00:10,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:00:10,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:00:10,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:00:10,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:00:10,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:00:10,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:00:10,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:00:10,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:00:10,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:00:10,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:00:10,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:00:10,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:00:10,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:00:10,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:00:10,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:00:10,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:00:10,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:00:10,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:00:10,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:00:10,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:00:10,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:00:10,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:00:10,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:00:10,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:00:10,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:00:10,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:00:10,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:00:10,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:00:10,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:00:10,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:00:10,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:00:10,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:00:10,572 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:00:10,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:00:10,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:00:10,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:00:10,598 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:00:10,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:00:10,598 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:00:10,598 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:00:10,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:00:10,599 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:00:10,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:00:10,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:00:10,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:00:10,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:00:10,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:00:10,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:00:10,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:00:10,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:00:10,601 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:00:10,601 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:00:10,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:00:10,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:00:10,602 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:00:10,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:00:10,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:00:10,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:00:10,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:00:10,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:00:10,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:00:10,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:00:10,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:00:10,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:00:10,604 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:00:10,605 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:00:10,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:00:10,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:00:10,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:00:10,606 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_fd944b8c-34b0-48ae-8c02-a1475108802a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb [2020-11-22 13:00:10,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:00:11,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:00:11,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:00:11,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:00:11,035 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:00:11,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-22 13:00:11,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/d89f432d8/7fc310b86f8e40d3a90e2f758d563f1f/FLAG6185d1cfe [2020-11-22 13:00:11,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:00:11,749 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-11-22 13:00:11,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/d89f432d8/7fc310b86f8e40d3a90e2f758d563f1f/FLAG6185d1cfe [2020-11-22 13:00:12,027 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/data/d89f432d8/7fc310b86f8e40d3a90e2f758d563f1f [2020-11-22 13:00:12,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:00:12,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:00:12,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:12,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:00:12,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:00:12,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5874dc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12, skipping insertion in model container [2020-11-22 13:00:12,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:00:12,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:12,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:12,537 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:00:12,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:00:12,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:12,623 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:00:12,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:00:12,759 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:00:12,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12 WrapperNode [2020-11-22 13:00:12,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:00:12,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:12,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:00:12,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:00:12,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:00:12,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:00:12,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:00:12,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:00:12,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... [2020-11-22 13:00:12,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:00:12,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:00:12,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:00:12,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:00:12,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 [2020-11-22 13:00:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-22 13:00:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:00:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:00:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:00:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:00:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-22 13:00:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-22 13:00:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:00:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:00:12,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:00:13,724 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:00:13,724 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-11-22 13:00:13,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:13 BoogieIcfgContainer [2020-11-22 13:00:13,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:00:13,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:00:13,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:00:13,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:00:13,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:00:12" (1/3) ... [2020-11-22 13:00:13,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f455898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:13, skipping insertion in model container [2020-11-22 13:00:13,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:00:12" (2/3) ... [2020-11-22 13:00:13,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f455898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:00:13, skipping insertion in model container [2020-11-22 13:00:13,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:13" (3/3) ... [2020-11-22 13:00:13,732 INFO L111 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-11-22 13:00:13,742 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:00:13,746 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:00:13,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:00:13,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:00:13,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:00:13,776 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:00:13,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:00:13,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:00:13,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:00:13,776 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:00:13,776 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:00:13,787 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-22 13:00:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:00:13,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:13,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:13,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:13,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:13,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1732431771, now seen corresponding path program 1 times [2020-11-22 13:00:13,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:00:13,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061315909] [2020-11-22 13:00:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 [2020-11-22 13:00:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:13,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:00:13,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:13,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:13,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:13,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061315909] [2020-11-22 13:00:13,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:13,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:00:13,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359484159] [2020-11-22 13:00:13,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:00:13,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:00:13,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:00:13,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:00:13,970 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-22 13:00:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:13,986 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2020-11-22 13:00:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:00:13,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-22 13:00:13,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:13,995 INFO L225 Difference]: With dead ends: 48 [2020-11-22 13:00:13,995 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:00:13,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:00:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:00:14,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 13:00:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:00:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-22 13:00:14,035 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2020-11-22 13:00:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:14,035 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-22 13:00:14,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:00:14,036 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-22 13:00:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:00:14,036 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:14,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:14,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:00:14,258 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:14,259 INFO L82 PathProgramCache]: Analyzing trace with hash 854163994, now seen corresponding path program 1 times [2020-11-22 13:00:14,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:00:14,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92520521] [2020-11-22 13:00:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 [2020-11-22 13:00:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:14,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:00:14,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:14,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:14,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:14,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92520521] [2020-11-22 13:00:14,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:14,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:00:14,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495818776] [2020-11-22 13:00:14,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:00:14,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:00:14,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:00:14,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:00:14,393 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2020-11-22 13:00:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:14,457 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-11-22 13:00:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:00:14,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-22 13:00:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:14,459 INFO L225 Difference]: With dead ends: 44 [2020-11-22 13:00:14,460 INFO L226 Difference]: Without dead ends: 34 [2020-11-22 13:00:14,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:00:14,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-22 13:00:14,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2020-11-22 13:00:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-22 13:00:14,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-22 13:00:14,466 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2020-11-22 13:00:14,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:14,467 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-22 13:00:14,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:00:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-22 13:00:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:00:14,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:14,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:14,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:00:14,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1167630684, now seen corresponding path program 1 times [2020-11-22 13:00:14,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:00:14,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483591424] [2020-11-22 13:00:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 [2020-11-22 13:00:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:14,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-22 13:00:14,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:14,967 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-22 13:00:14,968 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:14,982 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:00:14,998 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-22 13:00:14,999 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:15,014 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:00:15,014 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:00:15,014 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:12 [2020-11-22 13:00:15,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:15,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:15,091 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:00:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:15,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483591424] [2020-11-22 13:00:15,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:15,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 13:00:15,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050194128] [2020-11-22 13:00:15,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:00:15,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:00:15,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:00:15,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:00:15,180 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-11-22 13:00:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:15,509 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-11-22 13:00:15,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:00:15,510 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-22 13:00:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:15,511 INFO L225 Difference]: With dead ends: 47 [2020-11-22 13:00:15,511 INFO L226 Difference]: Without dead ends: 25 [2020-11-22 13:00:15,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:00:15,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-22 13:00:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2020-11-22 13:00:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:00:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-22 13:00:15,520 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-11-22 13:00:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:15,520 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-22 13:00:15,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:00:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-22 13:00:15,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:00:15,521 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:15,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:15,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:00:15,722 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:15,723 INFO L82 PathProgramCache]: Analyzing trace with hash -456502492, now seen corresponding path program 1 times [2020-11-22 13:00:15,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:00:15,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [503340069] [2020-11-22 13:00:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 [2020-11-22 13:00:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:00:15,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-22 13:00:15,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:00:15,979 INFO L350 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-11-22 13:00:15,979 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 41 [2020-11-22 13:00:15,980 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:16,025 INFO L625 ElimStorePlain]: treesize reduction 10, result has 75.6 percent of original size [2020-11-22 13:00:16,029 INFO L603 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-11-22 13:00:16,031 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-22 13:00:16,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:31 [2020-11-22 13:00:16,033 INFO L603 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-11-22 13:00:16,101 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:00:16,101 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-11-22 13:00:16,102 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:16,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:00:16,116 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:00:16,116 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:11 [2020-11-22 13:00:26,540 WARN L193 SmtUtils]: Spent 10.34 s on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-11-22 13:00:26,541 INFO L350 Elim1Store]: treesize reduction 107, result has 32.3 percent of original size [2020-11-22 13:00:26,541 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 67 [2020-11-22 13:00:26,542 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:26,650 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-11-22 13:00:26,651 INFO L625 ElimStorePlain]: treesize reduction 22, result has 69.0 percent of original size [2020-11-22 13:00:26,658 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:00:26,661 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-22 13:00:26,661 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:82, output treesize:67 [2020-11-22 13:00:26,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:00:26,718 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:00:26,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:00:26,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:00:26,863 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:00:26,864 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 43 [2020-11-22 13:00:26,865 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:27,108 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-11-22 13:00:27,109 INFO L350 Elim1Store]: treesize reduction 10, result has 87.7 percent of original size [2020-11-22 13:00:27,109 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 90 [2020-11-22 13:00:27,111 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-11-22 13:00:27,119 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:00:27,122 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:00:27,122 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:00:27,123 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:95, output treesize:4 [2020-11-22 13:00:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:27,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:00:27,234 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5822 treesize of output 5758 [2020-11-22 13:00:27,256 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-11-22 13:00:28,620 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 141 DAG size of output: 37 [2020-11-22 13:00:28,627 INFO L625 ElimStorePlain]: treesize reduction 5585, result has 1.4 percent of original size [2020-11-22 13:00:28,664 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-22 13:00:28,666 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:00:28,678 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-11-22 13:00:28,679 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:82, output treesize:38 [2020-11-22 13:00:28,694 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-22 13:00:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:00:28,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [503340069] [2020-11-22 13:00:28,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:00:28,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-22 13:00:28,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115546965] [2020-11-22 13:00:28,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-22 13:00:28,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:00:28,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-22 13:00:28,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:00:28,924 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-11-22 13:00:29,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:00:29,447 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-22 13:00:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-22 13:00:29,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-22 13:00:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:00:29,452 INFO L225 Difference]: With dead ends: 34 [2020-11-22 13:00:29,452 INFO L226 Difference]: Without dead ends: 28 [2020-11-22 13:00:29,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-11-22 13:00:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-22 13:00:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2020-11-22 13:00:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 13:00:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-22 13:00:29,458 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-11-22 13:00:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:00:29,458 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-22 13:00:29,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-22 13:00:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-22 13:00:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 13:00:29,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:00:29,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:00:29,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:00:29,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:00:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:00:29,660 INFO L82 PathProgramCache]: Analyzing trace with hash -406632358, now seen corresponding path program 1 times [2020-11-22 13:00:29,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:00:29,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995120165] [2020-11-22 13:00:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/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 [2020-11-22 13:00:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:00:29,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:00:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:00:29,985 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:00:30,065 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:00:30,066 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:00:30,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:00:30,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:00:30 BoogieIcfgContainer [2020-11-22 13:00:30,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:00:30,328 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:00:30,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:00:30,329 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:00:30,329 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:00:13" (3/4) ... [2020-11-22 13:00:30,331 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:00:30,390 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fd944b8c-34b0-48ae-8c02-a1475108802a/bin/utaipan/witness.graphml [2020-11-22 13:00:30,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:00:30,399 INFO L168 Benchmark]: Toolchain (without parser) took 18364.86 ms. Allocated memory was 71.3 MB in the beginning and 98.6 MB in the end (delta: 27.3 MB). Free memory was 48.5 MB in the beginning and 67.8 MB in the end (delta: -19.4 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,399 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory is still 31.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:00:30,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.27 ms. Allocated memory is still 71.3 MB. Free memory was 48.3 MB in the beginning and 31.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 71.3 MB. Free memory was 31.8 MB in the beginning and 53.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,400 INFO L168 Benchmark]: Boogie Preprocessor took 57.23 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 51.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,401 INFO L168 Benchmark]: RCFGBuilder took 849.53 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 51.3 MB in the end (delta: 393.8 kB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,401 INFO L168 Benchmark]: TraceAbstraction took 16600.71 ms. Allocated memory was 71.3 MB in the beginning and 98.6 MB in the end (delta: 27.3 MB). Free memory was 50.9 MB in the beginning and 71.0 MB in the end (delta: -20.1 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,402 INFO L168 Benchmark]: Witness Printer took 66.96 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 67.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:00:30,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory is still 31.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 727.27 ms. Allocated memory is still 71.3 MB. Free memory was 48.3 MB in the beginning and 31.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.11 ms. Allocated memory is still 71.3 MB. Free memory was 31.8 MB in the beginning and 53.4 MB in the end (delta: -21.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.23 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 51.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 849.53 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 51.3 MB in the end (delta: 393.8 kB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16600.71 ms. Allocated memory was 71.3 MB in the beginning and 98.6 MB in the end (delta: 27.3 MB). Free memory was 50.9 MB in the beginning and 71.0 MB in the end (delta: -20.1 MB). Peak memory consumption was 56.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.96 ms. Allocated memory is still 98.6 MB. Free memory was 71.0 MB in the beginning and 67.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L662] struct ldv_list_head s1 = { &(s1), &(s1) }; VAL [s1={7:0}] [L665] int j = __VERIFIER_nondet_int(); [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [s1={7:0}] [L652] COND FALSE !(&m->list != (s)) VAL [s1={7:0}] [L657] return 0; VAL [s1={7:0}] [L633] COND TRUE !ldv_is_in_set(new, s) [L634] struct ldv_list_element *le; [L576] void *ptr = malloc(size); [L565] COND FALSE !(!cond) VAL [s1={7:0}] [L578] return ptr; VAL [s1={7:0}] [L635] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L636] le->e = new [L605] head->next [L593] next->prev = new [L594] new->next = next [L595] new->prev = prev [L596] prev->next = new VAL [s1={7:0}] [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [s1={7:0}] [L652] COND TRUE &m->list != (s) [L653] EXPR m->e VAL [s1={7:0}] [L653] COND TRUE m->e == e [L654] return 1; VAL [s1={7:0}] [L667] COND TRUE ldv_is_in_set(j, &s1) [L562] COND FALSE !(0) VAL [s1={7:0}] [L562] __assert_fail ("0", "model/ldv.h", 3, __extension__ __PRETTY_FUNCTION__) VAL [s1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.5s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 160 SDslu, 98 SDs, 0 SdLazy, 56 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 104 ConstructedInterpolants, 7 QuantifiedInterpolants, 8336 SizeOfPredicates, 50 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...