./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/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_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/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_de5e734c-4702-4f08-8c11-3b2488663f8c/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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 ............................................................................................................................................. 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_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/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_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/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_de5e734c-4702-4f08-8c11-3b2488663f8c/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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:14:28,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:14:28,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:14:28,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:14:28,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:14:28,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:14:28,597 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:14:28,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:14:28,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:14:28,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:14:28,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:14:28,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:14:28,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:14:28,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:14:28,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:14:28,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:14:28,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:14:28,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:14:28,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:14:28,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:14:28,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:14:28,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:14:28,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:14:28,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:14:28,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:14:28,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:14:28,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:14:28,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:14:28,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:14:28,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:14:28,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:14:28,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:14:28,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:14:28,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:14:28,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:14:28,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:14:28,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:14:28,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:14:28,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:14:28,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:14:28,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:14:28,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-20 05:14:28,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:14:28,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:14:28,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:14:28,732 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:14:28,732 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:14:28,733 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:14:28,733 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:14:28,733 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:14:28,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:14:28,734 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:14:28,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:14:28,735 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:14:28,735 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:14:28,735 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:14:28,736 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:14:28,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:14:28,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:14:28,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:14:28,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:14:28,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:14:28,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:14:28,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:14:28,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:14:28,738 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:14:28,738 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:14:28,739 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:14:28,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:14:28,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:14:28,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:14:28,741 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:14:28,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:14:28,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:14:28,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:14:28,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:14:28,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:14:28,743 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:14:28,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:14:28,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:14:28,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:14:28,743 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_de5e734c-4702-4f08-8c11-3b2488663f8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-20 05:14:29,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:14:29,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:14:29,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:14:29,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:14:29,045 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:14:29,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-20 05:14:29,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/a4134f417/9128b083a7ec4ea8bebe7e07b0dd028d/FLAGd9dcc9a7d [2021-10-20 05:14:29,604 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:14:29,605 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-20 05:14:29,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/a4134f417/9128b083a7ec4ea8bebe7e07b0dd028d/FLAGd9dcc9a7d [2021-10-20 05:14:29,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/a4134f417/9128b083a7ec4ea8bebe7e07b0dd028d [2021-10-20 05:14:29,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:14:29,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:14:29,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:14:29,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:14:29,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:14:29,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:14:29" (1/1) ... [2021-10-20 05:14:29,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c75714a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:29, skipping insertion in model container [2021-10-20 05:14:29,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:14:29" (1/1) ... [2021-10-20 05:14:29,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:14:30,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:14:30,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:14:30,356 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 05:14:30,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@212d7522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:30, skipping insertion in model container [2021-10-20 05:14:30,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:14:30,358 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-20 05:14:30,361 INFO L168 Benchmark]: Toolchain (without parser) took 414.11 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 75.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:30,362 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 78.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:14:30,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.63 ms. Allocated memory is still 100.7 MB. Free memory was 61.0 MB in the beginning and 75.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:30,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 100.7 MB. Free memory is still 78.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.63 ms. Allocated memory is still 100.7 MB. Free memory was 61.0 MB in the beginning and 75.9 MB in the end (delta: -15.0 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 05:14:32,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:14:32,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:14:32,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:14:32,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:14:32,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:14:32,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:14:32,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:14:32,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:14:32,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:14:32,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:14:32,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:14:32,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:14:32,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:14:32,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:14:32,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:14:32,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:14:32,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:14:32,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:14:32,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:14:32,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:14:32,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:14:32,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:14:32,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:14:32,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:14:32,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:14:32,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:14:32,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:14:32,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:14:32,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:14:32,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:14:32,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:14:32,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:14:32,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:14:32,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:14:32,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:14:32,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:14:32,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:14:32,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:14:32,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:14:32,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:14:32,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-20 05:14:32,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:14:32,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:14:32,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:14:32,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:14:32,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:14:32,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:14:32,928 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:14:32,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:14:32,929 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:14:32,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-20 05:14:32,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-20 05:14:32,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:14:32,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:14:32,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 05:14:32,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:14:32,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:14:32,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:14:32,933 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-20 05:14:32,934 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-20 05:14:32,934 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-20 05:14:32,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:14:32,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:14:32,935 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-20 05:14:32,935 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-20 05:14:32,935 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:14:32,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:14:32,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:14:32,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-20 05:14:32,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:14:32,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:14:32,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:14:32,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:14:32,938 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-20 05:14:32,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-20 05:14:32,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:14:32,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:14:32,939 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_de5e734c-4702-4f08-8c11-3b2488663f8c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2021-10-20 05:14:33,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:14:33,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:14:33,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:14:33,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:14:33,384 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:14:33,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-20 05:14:33,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/58fde4003/013f492e76844bf38662e268edbc1c6b/FLAG632fae889 [2021-10-20 05:14:34,097 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:14:34,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-10-20 05:14:34,123 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/58fde4003/013f492e76844bf38662e268edbc1c6b/FLAG632fae889 [2021-10-20 05:14:34,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/data/58fde4003/013f492e76844bf38662e268edbc1c6b [2021-10-20 05:14:34,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:14:34,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:14:34,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:14:34,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:14:34,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:14:34,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:14:34" (1/1) ... [2021-10-20 05:14:34,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3153d2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:34, skipping insertion in model container [2021-10-20 05:14:34,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:14:34" (1/1) ... [2021-10-20 05:14:34,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:14:34,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:14:34,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:14:34,914 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-20 05:14:34,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:14:34,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:14:34,981 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:14:35,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:14:35,057 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:14:35,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35 WrapperNode [2021-10-20 05:14:35,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:14:35,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:14:35,059 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:14:35,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:14:35,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:14:35,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:14:35,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:14:35,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:14:35,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:14:35,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:14:35,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:14:35,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:14:35,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (1/1) ... [2021-10-20 05:14:35,147 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:14:35,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:14:35,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:14:35,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:14:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-20 05:14:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-20 05:14:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-20 05:14:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 05:14:35,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:14:35,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:14:35,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:14:35,639 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-20 05:14:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:14:35 BoogieIcfgContainer [2021-10-20 05:14:35,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:14:35,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:14:35,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:14:35,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:14:35,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:14:34" (1/3) ... [2021-10-20 05:14:35,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef4d817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:14:35, skipping insertion in model container [2021-10-20 05:14:35,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:14:35" (2/3) ... [2021-10-20 05:14:35,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef4d817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:14:35, skipping insertion in model container [2021-10-20 05:14:35,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:14:35" (3/3) ... [2021-10-20 05:14:35,652 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-10-20 05:14:35,660 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:14:35,661 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-10-20 05:14:35,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:14:35,729 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 05:14:35,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-20 05:14:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 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 05:14:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:14:35,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:14:35,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:14:35,764 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-20 05:14:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:14:35,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-10-20 05:14:35,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:14:35,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514663226] [2021-10-20 05:14:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:14:35,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:14:35,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:14:35,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:14:35,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 05:14:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:14:35,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-20 05:14:35,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:14:35,952 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 05:14:36,019 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-20 05:14:36,019 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 05:14:36,194 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 05:14:36,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:14:36,285 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 05:14:36,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:14:36,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514663226] [2021-10-20 05:14:36,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514663226] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:14:36,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:14:36,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-20 05:14:36,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930762417] [2021-10-20 05:14:36,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 05:14:36,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:14:36,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 05:14:36,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-20 05:14:36,318 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 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 05:14:36,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:14:36,499 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-10-20 05:14:36,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 05:14:36,502 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 05:14:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:14:36,510 INFO L225 Difference]: With dead ends: 30 [2021-10-20 05:14:36,510 INFO L226 Difference]: Without dead ends: 26 [2021-10-20 05:14:36,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:14:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-20 05:14:36,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-20 05:14:36,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.3888888888888888) 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 05:14:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-20 05:14:36,542 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2021-10-20 05:14:36,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:14:36,543 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-20 05:14:36,543 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 05:14:36,543 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-20 05:14:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-20 05:14:36,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:14:36,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:14:36,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 05:14:36,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:14:36,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-20 05:14:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:14:36,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-10-20 05:14:36,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:14:36,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907745895] [2021-10-20 05:14:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:14:36,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:14:36,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:14:36,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:14:36,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 05:14:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:14:36,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-20 05:14:36,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:14:36,847 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 05:14:36,856 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 05:14:36,968 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-20 05:14:36,969 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 30 treesize of output 32 [2021-10-20 05:14:36,982 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-20 05:14:36,983 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 29 treesize of output 29 [2021-10-20 05:14:37,131 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 05:14:37,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:14:39,751 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 05:14:39,752 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:14:39,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907745895] [2021-10-20 05:14:39,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907745895] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:14:39,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:14:39,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-20 05:14:39,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628263935] [2021-10-20 05:14:39,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 05:14:39,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:14:39,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 05:14:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-20 05:14:39,760 INFO L87 Difference]: Start difference. First operand 26 states and 25 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 05:14:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:14:40,554 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-20 05:14:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:14:40,556 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 05:14:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:14:40,557 INFO L225 Difference]: With dead ends: 22 [2021-10-20 05:14:40,557 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 05:14:40,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2685.5ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-20 05:14:40,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 05:14:40,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-20 05:14:40,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 21 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 05:14:40,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2021-10-20 05:14:40,563 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2021-10-20 05:14:40,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:14:40,564 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2021-10-20 05:14:40,564 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 05:14:40,564 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2021-10-20 05:14:40,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 05:14:40,565 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:14:40,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:14:40,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 05:14:40,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:14:40,766 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-20 05:14:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:14:40,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2021-10-20 05:14:40,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:14:40,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725400297] [2021-10-20 05:14:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:14:40,768 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:14:40,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:14:40,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:14:40,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 05:14:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:14:40,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 05:14:40,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:14:40,901 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 05:14:41,048 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 05:14:41,062 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 17 treesize of output 13 [2021-10-20 05:14:41,145 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 31 treesize of output 23 [2021-10-20 05:14:41,151 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 20 treesize of output 12 [2021-10-20 05:14:41,194 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 05:14:41,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:14:41,741 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 05:14:41,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:14:41,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725400297] [2021-10-20 05:14:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725400297] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:14:41,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:14:41,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-20 05:14:41,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479493177] [2021-10-20 05:14:41,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-20 05:14:41,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:14:41,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-20 05:14:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-20 05:14:41,744 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 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 05:14:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:14:42,315 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2021-10-20 05:14:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 05:14:42,316 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 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 12 [2021-10-20 05:14:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:14:42,317 INFO L225 Difference]: With dead ends: 21 [2021-10-20 05:14:42,317 INFO L226 Difference]: Without dead ends: 21 [2021-10-20 05:14:42,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 761.5ms TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-10-20 05:14:42,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-20 05:14:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-20 05:14:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 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 05:14:42,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2021-10-20 05:14:42,321 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2021-10-20 05:14:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:14:42,322 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2021-10-20 05:14:42,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 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 05:14:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2021-10-20 05:14:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 05:14:42,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:14:42,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:14:42,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-20 05:14:42,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:14:42,535 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-20 05:14:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:14:42,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2021-10-20 05:14:42,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:14:42,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757545496] [2021-10-20 05:14:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:14:42,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:14:42,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:14:42,538 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:14:42,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-20 05:14:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:14:42,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 05:14:42,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:14:42,626 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 05:14:42,686 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 22 treesize of output 18 [2021-10-20 05:14:42,731 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 22 treesize of output 14 [2021-10-20 05:14:42,752 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 05:14:42,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:14:42,861 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 05:14:42,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:14:42,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757545496] [2021-10-20 05:14:42,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757545496] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:14:42,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:14:42,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-20 05:14:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923861567] [2021-10-20 05:14:42,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 05:14:42,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:14:42,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 05:14:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-20 05:14:42,873 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 05:14:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:14:43,188 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-20 05:14:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-20 05:14:43,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2021-10-20 05:14:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:14:43,190 INFO L225 Difference]: With dead ends: 20 [2021-10-20 05:14:43,190 INFO L226 Difference]: Without dead ends: 20 [2021-10-20 05:14:43,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 217.5ms TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-10-20 05:14:43,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-20 05:14:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-20 05:14:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 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 05:14:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2021-10-20 05:14:43,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2021-10-20 05:14:43,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:14:43,195 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2021-10-20 05:14:43,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 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 05:14:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2021-10-20 05:14:43,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 05:14:43,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:14:43,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:14:43,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-20 05:14:43,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:14:43,396 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-20 05:14:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:14:43,397 INFO L82 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2021-10-20 05:14:43,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:14:43,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [261897088] [2021-10-20 05:14:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:14:43,398 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:14:43,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:14:43,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:14:43,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-20 05:14:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 05:14:43,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 05:14:43,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 05:14:43,791 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 05:14:43,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 05:14:43,940 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 05:14:43,940 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 05:14:43,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [261897088] [2021-10-20 05:14:43,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [261897088] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 05:14:43,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 05:14:43,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-20 05:14:43,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617359368] [2021-10-20 05:14:43,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-20 05:14:43,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 05:14:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-20 05:14:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-20 05:14:43,943 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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 05:14:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 05:14:44,127 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-20 05:14:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 05:14:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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 16 [2021-10-20 05:14:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 05:14:44,129 INFO L225 Difference]: With dead ends: 19 [2021-10-20 05:14:44,129 INFO L226 Difference]: Without dead ends: 19 [2021-10-20 05:14:44,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 214.0ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-20 05:14:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-20 05:14:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-20 05:14:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 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 05:14:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-20 05:14:44,132 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2021-10-20 05:14:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 05:14:44,133 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-20 05:14:44,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 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 05:14:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-20 05:14:44,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-20 05:14:44,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:14:44,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 05:14:44,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-20 05:14:44,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:14:44,334 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-20 05:14:44,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:14:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2021-10-20 05:14:44,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 05:14:44,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184422577] [2021-10-20 05:14:44,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:14:44,335 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 05:14:44,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 05:14:44,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 05:14:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 05:14:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:14:44,451 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:14:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:14:44,505 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 05:14:44,506 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:14:44,507 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-20 05:14:44,508 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-20 05:14:44,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-20 05:14:44,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-20 05:14:44,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-20 05:14:44,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-20 05:14:44,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-20 05:14:44,509 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-20 05:14:44,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-20 05:14:44,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:14:44,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:14:44,510 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-20 05:14:44,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 05:14:44,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 05:14:44,716 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:14:44,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:14:44 BoogieIcfgContainer [2021-10-20 05:14:44,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:14:44,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:14:44,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:14:44,739 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:14:44,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:14:35" (3/4) ... [2021-10-20 05:14:44,743 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 05:14:44,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:14:44,745 INFO L168 Benchmark]: Toolchain (without parser) took 10297.80 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 31.2 MB in the beginning and 43.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 15.3 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:44,746 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 35.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:14:44,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 607.81 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.1 MB in the beginning and 42.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:44,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 40.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:44,748 INFO L168 Benchmark]: Boogie Preprocessor took 29.55 ms. Allocated memory is still 67.1 MB. Free memory was 40.2 MB in the beginning and 38.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:14:44,748 INFO L168 Benchmark]: RCFGBuilder took 503.23 ms. Allocated memory is still 67.1 MB. Free memory was 38.9 MB in the beginning and 43.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:44,749 INFO L168 Benchmark]: TraceAbstraction took 9094.71 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.6 MB in the beginning and 44.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:44,750 INFO L168 Benchmark]: Witness Printer took 5.19 ms. Allocated memory is still 81.8 MB. Free memory was 44.0 MB in the beginning and 43.2 MB in the end (delta: 836.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:14:44,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 54.5 MB. Free memory is still 35.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 607.81 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.1 MB in the beginning and 42.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 40.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.55 ms. Allocated memory is still 67.1 MB. Free memory was 40.2 MB in the beginning and 38.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 503.23 ms. Allocated memory is still 67.1 MB. Free memory was 38.9 MB in the beginning and 43.1 MB in the end (delta: -4.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9094.71 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 42.6 MB in the beginning and 44.0 MB in the end (delta: -1.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.19 ms. Allocated memory is still 81.8 MB. Free memory was 44.0 MB in the beginning and 43.2 MB in the end (delta: 836.8 kB). 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L569] struct node* s = alloc_node(); [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 8996.7ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 16.2ms, AutomataDifference: 2103.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 202 SDslu, 44 SDs, 0 SdLazy, 230 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 932.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3994.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 58.6ms SsaConstructionTime, 137.6ms SatisfiabilityAnalysisTime, 4885.5ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 11 QuantifiedInterpolants, 948 SizeOfPredicates, 24 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-20 05:14:44,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de5e734c-4702-4f08-8c11-3b2488663f8c/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...