./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw --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 b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw --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 b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:18:34,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:18:34,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:18:34,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:18:34,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:18:34,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:18:34,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:18:34,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:18:34,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:18:34,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:18:34,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:18:34,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:18:34,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:18:34,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:18:34,514 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:18:34,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:18:34,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:18:34,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:18:34,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:18:34,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:18:34,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:18:34,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:18:34,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:18:34,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:18:34,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:18:34,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:18:34,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:18:34,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:18:34,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:18:34,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:18:34,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:18:34,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:18:34,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:18:34,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:18:34,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:18:34,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:18:34,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:18:34,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:18:34,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:18:34,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:18:34,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:18:34,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 05:18:34,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:18:34,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:18:34,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:18:34,611 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:18:34,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:18:34,611 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:18:34,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:18:34,611 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:18:34,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:18:34,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:18:34,613 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:18:34,613 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:18:34,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:18:34,614 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:18:34,614 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:18:34,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:18:34,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:18:34,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:18:34,615 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:18:34,615 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:18:34,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:18:34,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:18:34,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:18:34,616 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:18:34,616 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:18:34,617 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:18:34,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:18:34,617 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:18:34,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:18:34,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:18:34,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:18:34,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:18:34,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:34,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:18:34,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:18:34,619 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:18:34,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:18:34,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:18:34,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:18:34,620 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2021-10-20 05:18:34,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:18:34,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:18:34,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:18:34,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:18:34,923 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:18:34,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-20 05:18:35,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/801a1f658/b7f11de0dbb247aea4a59bbfbfc2981a/FLAGe86b053dc [2021-10-20 05:18:35,555 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:18:35,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-20 05:18:35,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/801a1f658/b7f11de0dbb247aea4a59bbfbfc2981a/FLAGe86b053dc [2021-10-20 05:18:35,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/801a1f658/b7f11de0dbb247aea4a59bbfbfc2981a [2021-10-20 05:18:35,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:18:35,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:18:35,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:35,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:18:35,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:18:35,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:35" (1/1) ... [2021-10-20 05:18:35,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2534f990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:35, skipping insertion in model container [2021-10-20 05:18:35,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:35" (1/1) ... [2021-10-20 05:18:35,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:18:35,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:18:36,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:36,262 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-20 05:18:36,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b7b7dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:36, skipping insertion in model container [2021-10-20 05:18:36,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:36,263 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:18:36,266 INFO L168 Benchmark]: Toolchain (without parser) took 374.01 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 58.3 MB in the beginning and 102.5 MB in the end (delta: -44.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:36,266 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:18:36,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.48 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 58.1 MB in the beginning and 102.5 MB in the end (delta: -44.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:18:36,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory is still 45.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.48 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 58.1 MB in the beginning and 102.5 MB in the end (delta: -44.5 MB). Peak memory consumption was 6.3 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 0.2.1-dev-e943c26 [2021-10-20 05:18:38,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:18:38,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:18:38,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:18:38,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:18:38,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:18:38,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:18:38,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:18:38,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:18:38,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:18:38,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:18:38,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:18:38,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:18:38,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:18:38,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:18:38,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:18:38,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:18:38,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:18:38,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:18:38,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:18:38,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:18:38,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:18:38,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:18:38,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:18:38,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:18:38,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:18:38,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:18:38,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:18:38,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:18:38,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:18:38,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:18:38,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:18:38,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:18:38,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:18:38,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:18:38,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:18:38,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:18:38,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:18:38,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:18:38,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:18:38,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:18:38,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-20 05:18:38,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:18:38,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:18:38,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:18:38,675 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:18:38,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:18:38,676 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:18:38,676 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:18:38,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:18:38,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:18:38,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:18:38,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:18:38,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:18:38,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:18:38,679 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:18:38,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:18:38,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:18:38,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:18:38,680 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:18:38,680 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:18:38,681 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:18:38,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:18:38,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:18:38,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:18:38,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:18:38,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:18:38,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:18:38,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:18:38,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:18:38,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:18:38,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:38,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:18:38,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:18:38,684 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:18:38,684 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:18:38,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:18:38,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:18:38,685 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b85925b4cd4a90c7937c0d7134475db048f88e78d985bef01499b1b0477a4b80 [2021-10-20 05:18:39,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:18:39,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:18:39,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:18:39,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:18:39,098 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:18:39,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-20 05:18:39,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/6994f54cf/c1c013f65c7442a0b71c53227ecde5d1/FLAG8d1535098 [2021-10-20 05:18:39,803 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:18:39,804 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-20 05:18:39,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/6994f54cf/c1c013f65c7442a0b71c53227ecde5d1/FLAG8d1535098 [2021-10-20 05:18:40,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/data/6994f54cf/c1c013f65c7442a0b71c53227ecde5d1 [2021-10-20 05:18:40,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:18:40,085 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:18:40,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:40,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:18:40,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:18:40,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a25544a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40, skipping insertion in model container [2021-10-20 05:18:40,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:18:40,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:18:40,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:40,461 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:18:40,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:18:40,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:40,536 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:18:40,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:18:40,626 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:18:40,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40 WrapperNode [2021-10-20 05:18:40,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:18:40,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:40,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:18:40,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:18:40,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:18:40,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:18:40,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:18:40,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:18:40,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:18:40,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:18:40,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:18:40,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:18:40,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (1/1) ... [2021-10-20 05:18:40,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:18:40,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:18:40,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:18:40,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:18:40,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 05:18:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-20 05:18:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-20 05:18:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:18:40,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:18:40,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:18:41,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:18:41,191 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-20 05:18:41,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:41 BoogieIcfgContainer [2021-10-20 05:18:41,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:18:41,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:18:41,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:18:41,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:18:41,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:18:40" (1/3) ... [2021-10-20 05:18:41,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bfd3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:41, skipping insertion in model container [2021-10-20 05:18:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:18:40" (2/3) ... [2021-10-20 05:18:41,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48bfd3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:18:41, skipping insertion in model container [2021-10-20 05:18:41,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:41" (3/3) ... [2021-10-20 05:18:41,200 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2021-10-20 05:18:41,205 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:18:41,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-10-20 05:18:41,248 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:18:41,255 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:18:41,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-10-20 05:18:41,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.68) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:41,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:18:41,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:41,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:41,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:18:41,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-10-20 05:18:41,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:41,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698167063] [2021-10-20 05:18:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:41,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:41,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:41,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:18:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:41,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:18:41,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:18:41,438 INFO L388 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 [2021-10-20 05:18:41,528 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-20 05:18:41,529 INFO L388 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 17 treesize of output 22 [2021-10-20 05:18:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:41,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:18:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:41,838 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:18:41,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698167063] [2021-10-20 05:18:41,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698167063] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:41,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:41,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-20 05:18:41,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362548625] [2021-10-20 05:18:41,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:18:41,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:18:41,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:18:41,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:18:41,862 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.68) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:42,104 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-10-20 05:18:42,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:18:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 05:18:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:42,120 INFO L225 Difference]: With dead ends: 36 [2021-10-20 05:18:42,121 INFO L226 Difference]: Without dead ends: 32 [2021-10-20 05:18:42,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:18:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-20 05:18:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-20 05:18:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 31 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:42,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-10-20 05:18:42,158 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 9 [2021-10-20 05:18:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:42,158 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-10-20 05:18:42,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:42,159 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-10-20 05:18:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:18:42,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:42,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:42,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:18:42,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:18:42,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:18:42,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:42,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-10-20 05:18:42,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:42,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457080128] [2021-10-20 05:18:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:42,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:42,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:42,384 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:42,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:18:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:42,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 05:18:42,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:18:42,470 INFO L388 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 [2021-10-20 05:18:42,478 INFO L388 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 [2021-10-20 05:18:42,597 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-20 05:18:42,598 INFO L388 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 29 treesize of output 31 [2021-10-20 05:18:42,612 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-20 05:18:42,614 INFO L388 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 28 treesize of output 28 [2021-10-20 05:18:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:42,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:18:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:43,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:18:43,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457080128] [2021-10-20 05:18:43,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457080128] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:43,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:43,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-20 05:18:43,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272354489] [2021-10-20 05:18:43,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 05:18:43,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:18:43,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 05:18:43,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-20 05:18:43,471 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:47,988 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-10-20 05:18:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-20 05:18:47,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-20 05:18:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:47,990 INFO L225 Difference]: With dead ends: 27 [2021-10-20 05:18:47,991 INFO L226 Difference]: Without dead ends: 27 [2021-10-20 05:18:47,991 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 608.1ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-20 05:18:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-20 05:18:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-20 05:18:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 26 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:47,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-10-20 05:18:47,994 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 9 [2021-10-20 05:18:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:47,994 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-10-20 05:18:47,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-10-20 05:18:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-20 05:18:47,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:47,995 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:48,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-20 05:18:48,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:18:48,196 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:18:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:48,196 INFO L82 PathProgramCache]: Analyzing trace with hash 711566546, now seen corresponding path program 1 times [2021-10-20 05:18:48,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:48,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958662204] [2021-10-20 05:18:48,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:48,198 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:48,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:48,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:18:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:48,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 05:18:48,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:18:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:48,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:18:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:48,771 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:18:48,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958662204] [2021-10-20 05:18:48,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958662204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:48,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:48,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-20 05:18:48,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177474858] [2021-10-20 05:18:48,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-20 05:18:48,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:18:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-20 05:18:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:18:48,773 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:48,992 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-20 05:18:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:18:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-20 05:18:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:48,995 INFO L225 Difference]: With dead ends: 26 [2021-10-20 05:18:48,995 INFO L226 Difference]: Without dead ends: 26 [2021-10-20 05:18:48,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 250.4ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-20 05:18:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-20 05:18:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-20 05:18:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 25 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-20 05:18:48,999 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 17 [2021-10-20 05:18:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:49,000 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-20 05:18:49,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-20 05:18:49,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-20 05:18:49,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:49,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:49,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-20 05:18:49,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:18:49,217 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:18:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash 915652980, now seen corresponding path program 1 times [2021-10-20 05:18:49,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:49,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967815636] [2021-10-20 05:18:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:49,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:49,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:49,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:49,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:18:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:49,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-20 05:18:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:18:49,413 INFO L388 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 [2021-10-20 05:18:49,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-20 05:18:49,503 INFO L388 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 [2021-10-20 05:18:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:49,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:18:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:49,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:18:49,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967815636] [2021-10-20 05:18:49,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967815636] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:49,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:49,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-20 05:18:49,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392862523] [2021-10-20 05:18:49,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 05:18:49,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:18:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 05:18:49,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-20 05:18:49,689 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:50,042 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-10-20 05:18:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-20 05:18:50,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-20 05:18:50,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:50,044 INFO L225 Difference]: With dead ends: 25 [2021-10-20 05:18:50,045 INFO L226 Difference]: Without dead ends: 25 [2021-10-20 05:18:50,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 311.3ms TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-20 05:18:50,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-20 05:18:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-20 05:18:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-10-20 05:18:50,051 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 19 [2021-10-20 05:18:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:50,053 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-10-20 05:18:50,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-10-20 05:18:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-20 05:18:50,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:50,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:50,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:18:50,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:18:50,266 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:18:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:50,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1679528615, now seen corresponding path program 1 times [2021-10-20 05:18:50,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:50,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758257180] [2021-10-20 05:18:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:50,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:50,271 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:50,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:18:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:50,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-20 05:18:50,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:18:50,738 INFO L388 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 15 treesize of output 11 [2021-10-20 05:18:50,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-20 05:18:51,023 INFO L388 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 [2021-10-20 05:18:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:51,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:18:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:51,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:18:51,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758257180] [2021-10-20 05:18:51,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758257180] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:51,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:51,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 17 [2021-10-20 05:18:51,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926037854] [2021-10-20 05:18:51,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-20 05:18:51,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:18:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-20 05:18:51,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-20 05:18:51,624 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:52,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:18:52,742 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-10-20 05:18:52,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-20 05:18:52,744 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-20 05:18:52,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:18:52,744 INFO L225 Difference]: With dead ends: 24 [2021-10-20 05:18:52,745 INFO L226 Difference]: Without dead ends: 24 [2021-10-20 05:18:52,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1283.1ms TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-10-20 05:18:52,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-20 05:18:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-20 05:18:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-10-20 05:18:52,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 20 [2021-10-20 05:18:52,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:18:52,750 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-10-20 05:18:52,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:18:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-10-20 05:18:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-20 05:18:52,751 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:18:52,751 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:18:52,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:18:52,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:18:52,963 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:18:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:18:52,964 INFO L82 PathProgramCache]: Analyzing trace with hash -525779434, now seen corresponding path program 1 times [2021-10-20 05:18:52,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:18:52,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362070938] [2021-10-20 05:18:52,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:18:52,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:18:52,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:18:52,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:18:52,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:18:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:18:53,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-20 05:18:53,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:18:53,113 INFO L388 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 [2021-10-20 05:18:53,187 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-20 05:18:53,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-10-20 05:18:53,402 INFO L388 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 26 treesize of output 22 [2021-10-20 05:18:53,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 39 treesize of output 23 [2021-10-20 05:18:53,688 INFO L388 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 30 treesize of output 18 [2021-10-20 05:18:53,916 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-20 05:18:53,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 45 [2021-10-20 05:18:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:54,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:18:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:18:56,524 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:18:56,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362070938] [2021-10-20 05:18:56,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362070938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:18:56,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:18:56,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 19 [2021-10-20 05:18:56,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750578174] [2021-10-20 05:18:56,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-20 05:18:56,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:18:56,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-20 05:18:56,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=326, Unknown=1, NotChecked=0, Total=380 [2021-10-20 05:18:56,526 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:19:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:19:01,389 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-20 05:19:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-20 05:19:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-20 05:19:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:19:01,391 INFO L225 Difference]: With dead ends: 23 [2021-10-20 05:19:01,391 INFO L226 Difference]: Without dead ends: 23 [2021-10-20 05:19:01,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 7118.9ms TimeCoverageRelationStatistics Valid=163, Invalid=648, Unknown=1, NotChecked=0, Total=812 [2021-10-20 05:19:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-20 05:19:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-20 05:19:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:19:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-20 05:19:01,395 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 21 [2021-10-20 05:19:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:19:01,396 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-20 05:19:01,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:19:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-20 05:19:01,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 05:19:01,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:19:01,397 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:19:01,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:19:01,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:19:01,600 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-20 05:19:01,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:19:01,601 INFO L82 PathProgramCache]: Analyzing trace with hash 880706812, now seen corresponding path program 1 times [2021-10-20 05:19:01,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:19:01,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585903265] [2021-10-20 05:19:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:19:01,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:19:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:19:01,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:19:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-20 05:19:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:19:01,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-20 05:19:01,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:19:01,739 INFO L388 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 [2021-10-20 05:19:02,073 INFO L388 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 38 treesize of output 34 [2021-10-20 05:19:02,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 54 treesize of output 34 [2021-10-20 05:19:02,363 INFO L388 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 46 treesize of output 30 [2021-10-20 05:19:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:19:02,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:19:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 05:19:19,255 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:19:19,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585903265] [2021-10-20 05:19:19,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585903265] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:19:19,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:19:19,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 24 [2021-10-20 05:19:19,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665819283] [2021-10-20 05:19:19,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-20 05:19:19,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:19:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-20 05:19:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=532, Unknown=6, NotChecked=0, Total=600 [2021-10-20 05:19:19,258 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:19:24,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:19:24,998 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-20 05:19:24,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-20 05:19:24,998 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 05:19:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:19:24,999 INFO L225 Difference]: With dead ends: 22 [2021-10-20 05:19:24,999 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 05:19:25,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 21250.1ms TimeCoverageRelationStatistics Valid=194, Invalid=1132, Unknown=6, NotChecked=0, Total=1332 [2021-10-20 05:19:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 05:19:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 05:19:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:19:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 05:19:25,001 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-20 05:19:25,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:19:25,001 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 05:19:25,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:19:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 05:19:25,002 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 05:19:25,004 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-20 05:19:25,005 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-20 05:19:25,005 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-20 05:19:25,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-20 05:19:25,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-20 05:19:25,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-20 05:19:25,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-20 05:19:25,006 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-20 05:19:25,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:19:25,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:19:25,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:19:25,007 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:19:25,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:19:25,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:19:25,008 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:19:25,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-20 05:19:25,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:19:25,224 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:19:25,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:19:25 BoogieIcfgContainer [2021-10-20 05:19:25,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:19:25,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:19:25,227 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:19:25,227 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:19:25,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:18:41" (3/4) ... [2021-10-20 05:19:25,231 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 05:19:25,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-20 05:19:25,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-20 05:19:25,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 05:19:25,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 05:19:25,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:19:25,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:19:25,304 INFO L168 Benchmark]: Toolchain (without parser) took 45218.62 ms. Allocated memory was 50.3 MB in the beginning and 79.7 MB in the end (delta: 29.4 MB). Free memory was 26.1 MB in the beginning and 32.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:19:25,305 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:19:25,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.18 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.0 MB in the beginning and 37.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-20 05:19:25,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.19 ms. Allocated memory is still 62.9 MB. Free memory was 37.2 MB in the beginning and 35.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:19:25,306 INFO L168 Benchmark]: Boogie Preprocessor took 42.29 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 34.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:19:25,307 INFO L168 Benchmark]: RCFGBuilder took 455.26 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 39.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2021-10-20 05:19:25,307 INFO L168 Benchmark]: TraceAbstraction took 44031.75 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 39.3 MB in the beginning and 35.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2021-10-20 05:19:25,308 INFO L168 Benchmark]: Witness Printer took 76.28 ms. Allocated memory is still 79.7 MB. Free memory was 35.8 MB in the beginning and 32.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:19:25,315 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.8 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 540.18 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 26.0 MB in the beginning and 37.4 MB in the end (delta: -11.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.19 ms. Allocated memory is still 62.9 MB. Free memory was 37.2 MB in the beginning and 35.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.29 ms. Allocated memory is still 62.9 MB. Free memory was 35.5 MB in the beginning and 34.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 455.26 ms. Allocated memory is still 62.9 MB. Free memory was 34.0 MB in the beginning and 39.9 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44031.75 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 39.3 MB in the beginning and 35.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Witness Printer took 76.28 ms. Allocated memory is still 79.7 MB. Free memory was 35.8 MB in the beginning and 32.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 43977.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 15.2ms, AutomataDifference: 17111.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 380 SDslu, 120 SDs, 0 SdLazy, 748 SolverSat, 81 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 6044.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 30969.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38.3ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 56.7ms SsaConstructionTime, 179.9ms SatisfiabilityAnalysisTime, 24517.2ms InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 220 ConstructedInterpolants, 52 QuantifiedInterpolants, 3338 SizeOfPredicates, 40 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-20 05:19:25,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ed16a3a-cef9-4eec-aea1-9daa0878b3fc/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...