./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 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-sets/test_add-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 0.2.0-7b2dab5 [2020-12-09 18:45:34,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:45:34,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:45:34,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:45:34,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:45:34,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:45:34,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:45:34,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:45:34,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:45:34,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:45:34,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:45:34,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:45:34,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:45:34,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:45:34,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:45:34,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:45:34,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:45:34,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:45:34,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:45:34,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:45:34,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:45:34,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:45:34,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:45:34,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:45:34,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:45:34,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:45:34,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:45:34,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:45:34,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:45:34,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:45:34,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:45:34,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:45:34,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:45:34,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:45:34,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:45:34,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:45:34,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:45:34,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:45:34,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:45:34,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:45:34,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:45:34,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:45:34,458 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:45:34,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:45:34,459 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:45:34,459 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:45:34,459 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:45:34,459 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:45:34,459 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:45:34,464 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:45:34,464 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:45:34,465 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:45:34,465 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:45:34,465 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:45:34,465 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:45:34,465 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:45:34,465 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:45:34,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:45:34,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:45:34,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:45:34,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:45:34,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:45:34,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:45:34,468 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_417cc070-f8e2-428c-9318-b844b1faccd8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb [2020-12-09 18:45:34,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:45:34,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:45:34,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:45:34,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:45:34,674 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:45:34,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-12-09 18:45:34,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/014fee8b8/f8d5a724b5f64e31a1cc9ec7dbe37394/FLAG85c6013c0 [2020-12-09 18:45:35,102 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:45:35,103 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-12-09 18:45:35,116 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/014fee8b8/f8d5a724b5f64e31a1cc9ec7dbe37394/FLAG85c6013c0 [2020-12-09 18:45:35,514 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/014fee8b8/f8d5a724b5f64e31a1cc9ec7dbe37394 [2020-12-09 18:45:35,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:45:35,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:45:35,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:45:35,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:45:35,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:45:35,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:45:35" (1/1) ... [2020-12-09 18:45:35,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168359d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:35, skipping insertion in model container [2020-12-09 18:45:35,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:45:35" (1/1) ... [2020-12-09 18:45:35,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:45:35,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:45:35,767 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2020-12-09 18:45:35,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:45:35,781 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) [2020-12-09 18:45:35,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c6f61fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:35, skipping insertion in model container [2020-12-09 18:45:35,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:45:35,782 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 18:45:35,784 INFO L168 Benchmark]: Toolchain (without parser) took 265.01 ms. Allocated memory was 79.7 MB in the beginning and 115.3 MB in the end (delta: 35.7 MB). Free memory was 58.7 MB in the beginning and 84.0 MB in the end (delta: -25.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:35,785 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:45:35,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.07 ms. Allocated memory was 79.7 MB in the beginning and 115.3 MB in the end (delta: 35.7 MB). Free memory was 58.5 MB in the beginning and 84.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:35,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.07 ms. Allocated memory was 79.7 MB in the beginning and 115.3 MB in the end (delta: 35.7 MB). Free memory was 58.5 MB in the beginning and 84.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 10.8 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 0.2.0-7b2dab5 [2020-12-09 18:45:37,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:45:37,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:45:37,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:45:37,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:45:37,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:45:37,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:45:37,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:45:37,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:45:37,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:45:37,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:45:37,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:45:37,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:45:37,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:45:37,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:45:37,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:45:37,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:45:37,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:45:37,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:45:37,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:45:37,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:45:37,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:45:37,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:45:37,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:45:37,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:45:37,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:45:37,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:45:37,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:45:37,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:45:37,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:45:37,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:45:37,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:45:37,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:45:37,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:45:37,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:45:37,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:45:37,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:45:37,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:45:37,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:45:37,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:45:37,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:45:37,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:45:37,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:45:37,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:45:37,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:45:37,171 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:45:37,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:45:37,171 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:45:37,171 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:45:37,171 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:45:37,171 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:45:37,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:45:37,172 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:45:37,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:45:37,173 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:45:37,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:45:37,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:45:37,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:45:37,173 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:45:37,174 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:45:37,174 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:45:37,174 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:45:37,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:45:37,174 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:45:37,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:45:37,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:45:37,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:45:37,175 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:45:37,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:45:37,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:45:37,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:45:37,176 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_417cc070-f8e2-428c-9318-b844b1faccd8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77902a9f57c297a8e1fc2f1cd5cfc51f597104fb [2020-12-09 18:45:37,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:45:37,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:45:37,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:45:37,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:45:37,415 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:45:37,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/../../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-12-09 18:45:37,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/7d3f0e6c8/2d8e23f1c39245b68a662260313be6c7/FLAG8b724fd2b [2020-12-09 18:45:37,875 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:45:37,875 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-12-09 18:45:37,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/7d3f0e6c8/2d8e23f1c39245b68a662260313be6c7/FLAG8b724fd2b [2020-12-09 18:45:37,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/data/7d3f0e6c8/2d8e23f1c39245b68a662260313be6c7 [2020-12-09 18:45:37,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:45:37,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:45:37,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:45:37,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:45:37,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:45:37,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:45:37" (1/1) ... [2020-12-09 18:45:37,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15a6f288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:37, skipping insertion in model container [2020-12-09 18:45:37,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:45:37" (1/1) ... [2020-12-09 18:45:37,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:45:37,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:45:38,184 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2020-12-09 18:45:38,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:45:38,200 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 18:45:38,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:45:38,245 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2020-12-09 18:45:38,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:45:38,252 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:45:38,296 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/sv-benchmarks/c/ldv-sets/test_add-1.i[25792,25805] [2020-12-09 18:45:38,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:45:38,359 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:45:38,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38 WrapperNode [2020-12-09 18:45:38,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:45:38,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:45:38,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:45:38,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:45:38,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:45:38,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:45:38,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:45:38,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:45:38,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... [2020-12-09 18:45:38,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:45:38,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:45:38,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:45:38,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:45:38,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 [2020-12-09 18:45:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 18:45:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 18:45:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 18:45:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:45:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 18:45:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 18:45:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 18:45:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:45:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:45:38,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:45:38,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:45:38,872 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-09 18:45:38,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:45:38 BoogieIcfgContainer [2020-12-09 18:45:38,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:45:38,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:45:38,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:45:38,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:45:38,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:45:37" (1/3) ... [2020-12-09 18:45:38,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5744c81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:45:38, skipping insertion in model container [2020-12-09 18:45:38,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:45:38" (2/3) ... [2020-12-09 18:45:38,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5744c81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:45:38, skipping insertion in model container [2020-12-09 18:45:38,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:45:38" (3/3) ... [2020-12-09 18:45:38,879 INFO L111 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-12-09 18:45:38,888 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:45:38,891 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 18:45:38,898 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 18:45:38,914 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:45:38,914 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:45:38,914 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:45:38,914 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:45:38,914 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:45:38,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:45:38,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:45:38,915 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:45:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-09 18:45:38,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:45:38,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:45:38,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:45:38,927 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:45:38,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:45:38,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1191041087, now seen corresponding path program 1 times [2020-12-09 18:45:38,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:45:38,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944954230] [2020-12-09 18:45:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 [2020-12-09 18:45:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:45:39,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:45:39,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:45:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:45:39,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:45:39,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944954230] [2020-12-09 18:45:39,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:45:39,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:45:39,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871442668] [2020-12-09 18:45:39,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:45:39,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:45:39,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:45:39,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:45:39,062 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-09 18:45:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:45:39,072 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2020-12-09 18:45:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:45:39,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-09 18:45:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:45:39,079 INFO L225 Difference]: With dead ends: 45 [2020-12-09 18:45:39,079 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 18:45:39,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:45:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 18:45:39,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 18:45:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 18:45:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-09 18:45:39,102 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2020-12-09 18:45:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:45:39,102 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-09 18:45:39,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:45:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-09 18:45:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:45:39,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:45:39,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:45:39,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:45:39,304 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:45:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:45:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash -942277654, now seen corresponding path program 1 times [2020-12-09 18:45:39,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:45:39,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503902269] [2020-12-09 18:45:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 [2020-12-09 18:45:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:45:39,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 18:45:39,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:45:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:45:39,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:45:39,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503902269] [2020-12-09 18:45:39,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:45:39,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:45:39,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055866889] [2020-12-09 18:45:39,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:45:39,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:45:39,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:45:39,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:45:39,402 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2020-12-09 18:45:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:45:39,449 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-09 18:45:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:45:39,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 18:45:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:45:39,451 INFO L225 Difference]: With dead ends: 41 [2020-12-09 18:45:39,451 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 18:45:39,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:45:39,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 18:45:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-09 18:45:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:45:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-09 18:45:39,455 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-12-09 18:45:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:45:39,455 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-09 18:45:39,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:45:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-09 18:45:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 18:45:39,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:45:39,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:45:39,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:45:39,657 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:45:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:45:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash 239429152, now seen corresponding path program 1 times [2020-12-09 18:45:39,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:45:39,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903197940] [2020-12-09 18:45:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 [2020-12-09 18:45:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:45:39,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 18:45:39,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:45:39,822 INFO L382 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 [2020-12-09 18:45:39,824 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:39,835 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:39,838 INFO L382 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 [2020-12-09 18:45:39,839 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:39,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:39,848 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:45:39,848 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:34, output treesize:12 [2020-12-09 18:45:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:45:39,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:45:39,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903197940] [2020-12-09 18:45:39,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:45:39,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:45:39,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813220837] [2020-12-09 18:45:39,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:45:39,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:45:39,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:45:39,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:45:39,870 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-09 18:45:42,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:45:42,239 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-12-09 18:45:42,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:45:42,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 18:45:42,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:45:42,240 INFO L225 Difference]: With dead ends: 40 [2020-12-09 18:45:42,240 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 18:45:42,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:45:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 18:45:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 18:45:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:45:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-09 18:45:42,243 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2020-12-09 18:45:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:45:42,244 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-09 18:45:42,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:45:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-09 18:45:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:45:42,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:45:42,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:45:42,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:45:42,445 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:45:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:45:42,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1232200096, now seen corresponding path program 1 times [2020-12-09 18:45:42,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:45:42,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604664738] [2020-12-09 18:45:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 [2020-12-09 18:45:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:45:42,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 18:45:42,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:45:42,624 INFO L348 Elim1Store]: treesize reduction 73, result has 33.0 percent of original size [2020-12-09 18:45:42,624 INFO L382 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 [2020-12-09 18:45:42,628 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:42,670 INFO L625 ElimStorePlain]: treesize reduction 12, result has 73.3 percent of original size [2020-12-09 18:45:42,674 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 18:45:42,677 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 18:45:42,678 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-09 18:45:42,680 INFO L547 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. [2020-12-09 18:45:42,680 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:35 [2020-12-09 18:45:42,683 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 18:45:42,684 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-09 18:45:42,685 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-12-09 18:45:42,739 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:42,739 INFO L382 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 [2020-12-09 18:45:42,741 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:42,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:42,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:45:42,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:11 [2020-12-09 18:45:42,977 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-12-09 18:45:42,978 INFO L348 Elim1Store]: treesize reduction 107, result has 32.3 percent of original size [2020-12-09 18:45:42,978 INFO L382 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 [2020-12-09 18:45:42,982 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:43,025 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:43,029 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 18:45:43,030 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,032 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,035 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 18:45:43,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,039 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,043 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,045 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,053 INFO L547 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. [2020-12-09 18:45:43,053 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:82, output treesize:101 [2020-12-09 18:45:43,055 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 18:45:43,056 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,057 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,059 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 18:45:43,061 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,065 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,066 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,069 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,106 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 18:45:43,107 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,109 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,111 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 18:45:43,113 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,114 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,117 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,119 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,180 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 18:45:43,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,183 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,184 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 18:45:43,186 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,188 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-12-09 18:45:43,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,190 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,193 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,195 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,197 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-12-09 18:45:43,199 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,201 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 18:45:43,206 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,207 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,208 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,210 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 18:45:43,211 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 18:45:43,218 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,219 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:45:43,220 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:45:43,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-09 18:45:43,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 18:45:43,341 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:43,341 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 94 [2020-12-09 18:45:43,344 INFO L639 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-12-09 18:45:43,346 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 18:45:43,447 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:43,447 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 93 [2020-12-09 18:45:43,450 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:43,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 18:45:43,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 18:45:43,544 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:43,545 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 74 [2020-12-09 18:45:43,548 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:43,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-09 18:45:43,602 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 18:45:43,602 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 71 [2020-12-09 18:45:43,606 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-09 18:45:43,614 INFO L625 ElimStorePlain]: treesize reduction 10, result has 28.6 percent of original size [2020-12-09 18:45:43,615 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 18:45:43,615 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:249, output treesize:4 [2020-12-09 18:45:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:45:43,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:45:43,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604664738] [2020-12-09 18:45:43,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:45:43,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 18:45:43,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700634014] [2020-12-09 18:45:43,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 18:45:43,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:45:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 18:45:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 18:45:43,636 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 8 states. [2020-12-09 18:45:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:45:45,826 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-12-09 18:45:45,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 18:45:45,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-09 18:45:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:45:45,828 INFO L225 Difference]: With dead ends: 31 [2020-12-09 18:45:45,828 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 18:45:45,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 18:45:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 18:45:45,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2020-12-09 18:45:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 18:45:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-09 18:45:45,833 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2020-12-09 18:45:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:45:45,834 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-09 18:45:45,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 18:45:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-09 18:45:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:45:45,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:45:45,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:45:46,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:45:46,037 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:45:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:45:46,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1233808810, now seen corresponding path program 1 times [2020-12-09 18:45:46,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:45:46,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299304273] [2020-12-09 18:45:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/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 [2020-12-09 18:45:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:45:46,206 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:45:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 18:45:46,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 18:45:46,336 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 18:45:46,336 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:45:46,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 18:45:46,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:45:46 BoogieIcfgContainer [2020-12-09 18:45:46,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:45:46,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:45:46,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:45:46,595 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:45:46,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:45:38" (3/4) ... [2020-12-09 18:45:46,597 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 18:45:46,629 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_417cc070-f8e2-428c-9318-b844b1faccd8/bin/utaipan/witness.graphml [2020-12-09 18:45:46,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:45:46,630 INFO L168 Benchmark]: Toolchain (without parser) took 8729.58 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 39.9 MB in the beginning and 37.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 27.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,630 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 75.5 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:45:46,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.80 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 60.5 MB in the beginning and 78.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.75 ms. Allocated memory is still 96.5 MB. Free memory was 78.4 MB in the beginning and 76.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,631 INFO L168 Benchmark]: Boogie Preprocessor took 26.81 ms. Allocated memory is still 96.5 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,631 INFO L168 Benchmark]: RCFGBuilder took 440.45 ms. Allocated memory is still 96.5 MB. Free memory was 73.9 MB in the beginning and 77.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,631 INFO L168 Benchmark]: TraceAbstraction took 7719.62 ms. Allocated memory is still 96.5 MB. Free memory was 77.8 MB in the beginning and 40.3 MB in the end (delta: 37.5 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,632 INFO L168 Benchmark]: Witness Printer took 34.00 ms. Allocated memory is still 96.5 MB. Free memory was 40.3 MB in the beginning and 37.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:45:46,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 75.5 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 453.80 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 60.5 MB in the beginning and 78.4 MB in the end (delta: -17.9 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.75 ms. Allocated memory is still 96.5 MB. Free memory was 78.4 MB in the beginning and 76.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.81 ms. Allocated memory is still 96.5 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 440.45 ms. Allocated memory is still 96.5 MB. Free memory was 73.9 MB in the beginning and 77.8 MB in the end (delta: -3.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7719.62 ms. Allocated memory is still 96.5 MB. Free memory was 77.8 MB in the beginning and 40.3 MB in the end (delta: 37.5 MB). Peak memory consumption was 36.4 MB. Max. memory is 16.1 GB. * Witness Printer took 34.00 ms. Allocated memory is still 96.5 MB. Free memory was 40.3 MB in the beginning and 37.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 667]: a call to reach_error is reachable a call to reach_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) [L667] reach_error() VAL [s1={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 105 SDslu, 76 SDs, 0 SdLazy, 50 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 2 QuantifiedInterpolants, 5365 SizeOfPredicates, 45 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...