./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7af2f20e563d03f4a81a8dac054ded849cb34c ............................................................................................................................................ 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_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7af2f20e563d03f4a81a8dac054ded849cb34c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 11:24:03,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:24:03,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:24:03,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:24:03,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:24:03,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:24:03,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:24:03,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:24:03,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:24:03,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:24:03,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:24:03,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:24:03,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:24:03,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:24:03,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:24:03,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:24:03,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:24:03,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:24:03,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:24:03,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:24:03,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:24:03,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:24:03,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:24:03,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:24:03,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:24:03,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:24:03,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:24:03,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:24:03,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:24:03,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:24:03,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:24:03,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:24:03,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:24:03,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:24:03,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:24:03,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:24:03,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:24:03,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:24:03,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:24:03,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:24:03,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:24:03,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 11:24:03,340 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:24:03,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:24:03,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:24:03,340 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:24:03,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:24:03,341 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:24:03,341 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:24:03,342 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:24:03,342 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:24:03,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 11:24:03,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 11:24:03,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:24:03,342 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 11:24:03,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:24:03,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:24:03,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:24:03,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:24:03,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:24:03,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:24:03,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:24:03,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:24:03,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:24:03,345 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:24:03,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:24:03,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:24:03,345 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:24:03,345 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_ed70c587-524e-4f5e-9243-7af782041e01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2020-12-09 11:24:03,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:24:03,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:24:03,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:24:03,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:24:03,544 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:24:03,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-12-09 11:24:03,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/7aea5356a/b9a8940bfd324b9480d1499103b50c83/FLAG1e766dfe7 [2020-12-09 11:24:04,010 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:24:04,011 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-12-09 11:24:04,020 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/7aea5356a/b9a8940bfd324b9480d1499103b50c83/FLAG1e766dfe7 [2020-12-09 11:24:04,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/7aea5356a/b9a8940bfd324b9480d1499103b50c83 [2020-12-09 11:24:04,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:24:04,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:24:04,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:24:04,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:24:04,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:24:04,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:24:04" (1/1) ... [2020-12-09 11:24:04,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c50342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:04, skipping insertion in model container [2020-12-09 11:24:04,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:24:04" (1/1) ... [2020-12-09 11:24:04,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:24:04,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:24:04,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:24:04,281 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 11:24:04,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@789cd4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:04, skipping insertion in model container [2020-12-09 11:24:04,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:24:04,282 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 11:24:04,283 INFO L168 Benchmark]: Toolchain (without parser) took 250.14 ms. Allocated memory is still 109.1 MB. Free memory was 76.7 MB in the beginning and 85.3 MB in the end (delta: -8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:24:04,284 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:24:04,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.17 ms. Allocated memory is still 109.1 MB. Free memory was 76.3 MB in the beginning and 85.3 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:24:04,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.17 ms. Allocated memory is still 109.1 MB. Free memory was 76.3 MB in the beginning and 85.3 MB in the end (delta: -9.0 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: 562]: 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 11:24:05,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:24:05,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:24:05,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:24:05,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:24:05,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:24:05,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:24:05,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:24:05,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:24:05,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:24:05,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:24:05,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:24:05,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:24:05,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:24:05,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:24:05,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:24:05,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:24:05,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:24:05,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:24:05,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:24:05,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:24:05,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:24:05,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:24:05,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:24:05,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:24:05,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:24:05,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:24:05,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:24:05,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:24:05,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:24:05,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:24:05,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:24:05,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:24:05,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:24:05,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:24:05,665 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:24:05,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:24:05,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:24:05,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:24:05,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:24:05,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:24:05,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 11:24:05,684 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:24:05,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:24:05,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:24:05,685 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:24:05,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:24:05,685 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:24:05,685 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:24:05,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:24:05,686 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:24:05,686 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 11:24:05,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 11:24:05,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:24:05,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 11:24:05,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:24:05,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 11:24:05,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:24:05,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:24:05,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:24:05,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:24:05,693 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 11:24:05,693 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 11:24:05,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:24:05,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:24:05,694 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_ed70c587-524e-4f5e-9243-7af782041e01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2020-12-09 11:24:05,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:24:05,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:24:05,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:24:05,949 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:24:05,949 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:24:05,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-12-09 11:24:05,990 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/d3bfd30db/226258a137f941639b15bf4581048817/FLAG61c514934 [2020-12-09 11:24:06,436 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:24:06,437 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-12-09 11:24:06,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/d3bfd30db/226258a137f941639b15bf4581048817/FLAG61c514934 [2020-12-09 11:24:06,461 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/data/d3bfd30db/226258a137f941639b15bf4581048817 [2020-12-09 11:24:06,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:24:06,463 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:24:06,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:24:06,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:24:06,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:24:06,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772782b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06, skipping insertion in model container [2020-12-09 11:24:06,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:24:06,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:24:06,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:24:06,717 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 11:24:06,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:24:06,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:24:06,754 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:24:06,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:24:06,833 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:24:06,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06 WrapperNode [2020-12-09 11:24:06,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:24:06,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:24:06,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:24:06,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:24:06,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:24:06,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:24:06,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:24:06,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:24:06,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... [2020-12-09 11:24:06,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:24:06,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:24:06,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:24:06,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:24:06,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/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 11:24:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 11:24:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 11:24:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 11:24:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 11:24:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:24:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:24:07,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:24:07,198 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 11:24:07,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:24:07 BoogieIcfgContainer [2020-12-09 11:24:07,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:24:07,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:24:07,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:24:07,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:24:07,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:24:06" (1/3) ... [2020-12-09 11:24:07,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c47641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:24:07, skipping insertion in model container [2020-12-09 11:24:07,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:24:06" (2/3) ... [2020-12-09 11:24:07,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c47641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:24:07, skipping insertion in model container [2020-12-09 11:24:07,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:24:07" (3/3) ... [2020-12-09 11:24:07,207 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2020-12-09 11:24:07,219 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:24:07,224 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-09 11:24:07,235 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-09 11:24:07,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:24:07,251 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 11:24:07,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:24:07,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:24:07,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:24:07,252 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:24:07,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:24:07,252 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:24:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-09 11:24:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 11:24:07,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:24:07,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:24:07,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 11:24:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:24:07,272 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2020-12-09 11:24:07,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:24:07,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333236524] [2020-12-09 11:24:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/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 11:24:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:24:07,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 11:24:07,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:24:07,410 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 11:24:07,411 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:07,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:07,416 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:07,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 11:24:07,466 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:07,467 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-12-09 11:24:07,474 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:07,488 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-12-09 11:24:07,490 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 11:24:07,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2020-12-09 11:24:07,510 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 11:24:07,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:24:07,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333236524] [2020-12-09 11:24:07,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:24:07,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:24:07,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274652130] [2020-12-09 11:24:07,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:24:07,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:24:07,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:24:07,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:24:07,527 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-12-09 11:24:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:24:07,642 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-12-09 11:24:07,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 11:24:07,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 11:24:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:24:07,651 INFO L225 Difference]: With dead ends: 30 [2020-12-09 11:24:07,651 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 11:24:07,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 11:24:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 11:24:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-09 11:24:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 11:24:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2020-12-09 11:24:07,675 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2020-12-09 11:24:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:24:07,676 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2020-12-09 11:24:07,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:24:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-12-09 11:24:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 11:24:07,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:24:07,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:24:07,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 11:24:07,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 11:24:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:24:07,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2020-12-09 11:24:07,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:24:07,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413604693] [2020-12-09 11:24:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/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 11:24:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:24:07,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 11:24:07,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:24:07,990 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 11:24:07,991 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:07,999 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,001 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 11:24:08,002 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,007 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,008 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,009 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:16 [2020-12-09 11:24:08,051 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,051 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 11 treesize of output 15 [2020-12-09 11:24:08,053 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,061 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2020-12-09 11:24:08,066 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,073 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,078 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 11:24:08,078 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2020-12-09 11:24:08,123 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 11:24:08,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:24:08,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413604693] [2020-12-09 11:24:08,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:24:08,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:24:08,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082943711] [2020-12-09 11:24:08,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 11:24:08,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:24:08,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 11:24:08,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:24:08,126 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 5 states. [2020-12-09 11:24:08,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:24:08,279 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-12-09 11:24:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:24:08,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 11:24:08,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:24:08,281 INFO L225 Difference]: With dead ends: 22 [2020-12-09 11:24:08,281 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 11:24:08,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 11:24:08,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 11:24:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 11:24:08,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 11:24:08,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-12-09 11:24:08,283 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2020-12-09 11:24:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:24:08,284 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-12-09 11:24:08,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 11:24:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-12-09 11:24:08,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 11:24:08,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:24:08,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:24:08,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 11:24:08,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 11:24:08,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:24:08,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2020-12-09 11:24:08,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:24:08,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315248641] [2020-12-09 11:24:08,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/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 11:24:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:24:08,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 11:24:08,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:24:08,635 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 11:24:08,636 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,643 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:11 [2020-12-09 11:24:08,691 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 11:24:08,692 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,706 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 11:24:08,707 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,714 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,716 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,716 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-12-09 11:24:08,745 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 11:24:08,746 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,754 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,757 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 19 treesize of output 11 [2020-12-09 11:24:08,758 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,763 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:08,764 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:08,764 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:9 [2020-12-09 11:24:08,780 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 11:24:08,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:24:08,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315248641] [2020-12-09 11:24:08,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:24:08,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 11:24:08,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484692472] [2020-12-09 11:24:08,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 11:24:08,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:24:08,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 11:24:08,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:24:08,783 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 7 states. [2020-12-09 11:24:08,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:24:08,995 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 11:24:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 11:24:08,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-09 11:24:08,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:24:08,996 INFO L225 Difference]: With dead ends: 21 [2020-12-09 11:24:08,996 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 11:24:08,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-09 11:24:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 11:24:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 11:24:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 11:24:09,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-12-09 11:24:09,000 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2020-12-09 11:24:09,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:24:09,000 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-12-09 11:24:09,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 11:24:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-12-09 11:24:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 11:24:09,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:24:09,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:24:09,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 11:24:09,203 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 11:24:09,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:24:09,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2020-12-09 11:24:09,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:24:09,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406551618] [2020-12-09 11:24:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/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 11:24:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:24:09,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:24:09,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:24:09,334 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 11:24:09,335 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:09,337 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:09,337 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:09,337 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 11:24:09,364 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-09 11:24:09,365 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:09,371 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:09,372 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:09,372 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-12-09 11:24:09,390 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 19 treesize of output 11 [2020-12-09 11:24:09,391 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 11:24:09,393 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 11:24:09,394 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-09 11:24:09,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-12-09 11:24:09,403 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 11:24:09,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:24:09,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406551618] [2020-12-09 11:24:09,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:24:09,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 11:24:09,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871264845] [2020-12-09 11:24:09,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 11:24:09,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:24:09,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 11:24:09,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 11:24:09,405 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 7 states. [2020-12-09 11:24:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:24:09,562 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-12-09 11:24:09,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 11:24:09,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-09 11:24:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:24:09,563 INFO L225 Difference]: With dead ends: 20 [2020-12-09 11:24:09,563 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 11:24:09,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-09 11:24:09,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 11:24:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 11:24:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 11:24:09,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-12-09 11:24:09,565 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2020-12-09 11:24:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:24:09,566 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-12-09 11:24:09,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 11:24:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-12-09 11:24:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 11:24:09,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:24:09,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:24:09,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 11:24:09,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 11:24:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:24:09,770 INFO L82 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2020-12-09 11:24:09,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:24:09,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056562775] [2020-12-09 11:24:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/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 11:24:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:24:09,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:24:09,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:24:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:24:09,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:24:09,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056562775] [2020-12-09 11:24:09,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:24:09,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:24:09,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463134184] [2020-12-09 11:24:09,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 11:24:09,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:24:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 11:24:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:24:09,951 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2020-12-09 11:24:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:24:10,041 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-12-09 11:24:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:24:10,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 11:24:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:24:10,042 INFO L225 Difference]: With dead ends: 19 [2020-12-09 11:24:10,042 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 11:24:10,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-09 11:24:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 11:24:10,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 11:24:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 11:24:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-12-09 11:24:10,044 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2020-12-09 11:24:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:24:10,044 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-12-09 11:24:10,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 11:24:10,044 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-12-09 11:24:10,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 11:24:10,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:24:10,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:24:10,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 11:24:10,246 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-09 11:24:10,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:24:10,247 INFO L82 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2020-12-09 11:24:10,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:24:10,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613951496] [2020-12-09 11:24:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed70c587-524e-4f5e-9243-7af782041e01/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 11:24:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 11:24:10,435 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 11:24:10,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 11:24:10,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 11:24:10,479 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 11:24:10,479 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 11:24:10,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 11:24:10,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:24:10 BoogieIcfgContainer [2020-12-09 11:24:10,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:24:10,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:24:10,707 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:24:10,707 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:24:10,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:24:07" (3/4) ... [2020-12-09 11:24:10,710 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 11:24:10,711 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:24:10,711 INFO L168 Benchmark]: Toolchain (without parser) took 4247.50 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 38.9 MB in the beginning and 55.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:24:10,712 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:24:10,712 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.86 ms. Allocated memory is still 60.8 MB. Free memory was 38.7 MB in the beginning and 31.5 MB in the end (delta: 7.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:24:10,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.86 ms. Allocated memory is still 60.8 MB. Free memory was 31.3 MB in the beginning and 29.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:24:10,713 INFO L168 Benchmark]: Boogie Preprocessor took 18.44 ms. Allocated memory is still 60.8 MB. Free memory was 29.6 MB in the beginning and 28.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:24:10,713 INFO L168 Benchmark]: RCFGBuilder took 315.32 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 28.3 MB in the beginning and 49.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 11:24:10,714 INFO L168 Benchmark]: TraceAbstraction took 3505.00 ms. Allocated memory is still 81.8 MB. Free memory was 49.3 MB in the beginning and 56.3 MB in the end (delta: -7.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:24:10,714 INFO L168 Benchmark]: Witness Printer took 4.11 ms. Allocated memory is still 81.8 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:24:10,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.86 ms. Allocated memory is still 60.8 MB. Free memory was 38.7 MB in the beginning and 31.5 MB in the end (delta: 7.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.86 ms. Allocated memory is still 60.8 MB. Free memory was 31.3 MB in the beginning and 29.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.44 ms. Allocated memory is still 60.8 MB. Free memory was 29.6 MB in the beginning and 28.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 315.32 ms. Allocated memory was 60.8 MB in the beginning and 81.8 MB in the end (delta: 21.0 MB). Free memory was 28.3 MB in the beginning and 49.7 MB in the end (delta: -21.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3505.00 ms. Allocated memory is still 81.8 MB. Free memory was 49.3 MB in the beginning and 56.3 MB in the end (delta: -7.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.11 ms. Allocated memory is still 81.8 MB. Free memory is still 55.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L569] struct node* s = alloc_node(); [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 197 SDslu, 35 SDs, 0 SdLazy, 199 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 4 QuantifiedInterpolants, 4651 SizeOfPredicates, 29 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...