./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8 --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 86b203c3a804c103d90401bd32cfcff28939b920 ............................................................................................................................................. 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_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8 --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 86b203c3a804c103d90401bd32cfcff28939b920 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:54:24,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:54:24,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:54:24,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:54:24,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:54:24,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:54:24,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:54:24,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:54:24,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:54:24,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:54:24,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:54:24,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:54:24,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:54:24,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:54:24,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:54:24,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:54:24,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:54:24,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:54:24,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:54:24,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:54:24,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:54:24,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:54:24,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:54:24,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:54:24,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:54:24,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:54:24,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:54:24,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:54:24,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:54:24,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:54:24,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:54:24,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:54:24,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:54:24,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:54:24,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:54:24,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:54:24,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:54:24,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:54:24,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:54:24,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:54:24,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:54:24,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 06:54:24,722 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:54:24,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:54:24,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:54:24,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:54:24,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:54:24,724 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:54:24,724 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:54:24,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:54:24,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:54:24,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:54:24,726 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:54:24,726 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:54:24,727 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:54:24,727 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:54:24,727 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:54:24,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 06:54:24,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 06:54:24,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:54:24,728 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:54:24,729 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 06:54:24,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:54:24,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:54:24,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:54:24,729 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 06:54:24,730 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 06:54:24,730 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 06:54:24,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:54:24,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:54:24,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:54:24,732 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:54:24,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:54:24,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:54:24,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:54:24,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:54:24,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:54:24,734 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:54:24,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:54:24,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:54:24,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:54:24,735 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_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2021-10-13 06:54:24,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:54:25,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:54:25,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:54:25,025 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:54:25,025 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:54:25,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 06:54:25,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/08153259c/3a83e66cad2246bf91e26cfa905890e8/FLAG8d2c153c9 [2021-10-13 06:54:25,620 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:54:25,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 06:54:25,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/08153259c/3a83e66cad2246bf91e26cfa905890e8/FLAG8d2c153c9 [2021-10-13 06:54:25,918 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/08153259c/3a83e66cad2246bf91e26cfa905890e8 [2021-10-13 06:54:25,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:54:25,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:54:25,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:54:25,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:54:25,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:54:25,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:25" (1/1) ... [2021-10-13 06:54:25,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d653681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:25, skipping insertion in model container [2021-10-13 06:54:25,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:25" (1/1) ... [2021-10-13 06:54:25,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:54:25,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:54:26,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:54:26,319 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) [2021-10-13 06:54:26,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ff9568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:26, skipping insertion in model container [2021-10-13 06:54:26,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:54:26,320 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 06:54:26,322 INFO L168 Benchmark]: Toolchain (without parser) took 398.70 ms. Allocated memory is still 92.3 MB. Free memory was 70.0 MB in the beginning and 68.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:26,324 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 75.5 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:54:26,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.45 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:54:26,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 75.5 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 396.45 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:54:28,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:54:28,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:54:28,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:54:28,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:54:28,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:54:28,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:54:28,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:54:28,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:54:28,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:54:28,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:54:28,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:54:28,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:54:28,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:54:28,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:54:28,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:54:28,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:54:28,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:54:28,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:54:28,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:54:28,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:54:28,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:54:28,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:54:28,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:54:28,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:54:28,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:54:28,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:54:28,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:54:28,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:54:28,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:54:28,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:54:28,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:54:28,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:54:28,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:54:28,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:54:28,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:54:28,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:54:28,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:54:28,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:54:28,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:54:28,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:54:28,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 06:54:28,651 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:54:28,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:54:28,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:54:28,653 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:54:28,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:54:28,653 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:54:28,653 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:54:28,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:54:28,654 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:54:28,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 06:54:28,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 06:54:28,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:54:28,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:54:28,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 06:54:28,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:54:28,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:54:28,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:54:28,658 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 06:54:28,658 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 06:54:28,658 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 06:54:28,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:54:28,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:54:28,659 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:54:28,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:54:28,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:54:28,660 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:54:28,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:54:28,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:54:28,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:54:28,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:54:28,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:54:28,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:54:28,661 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:54:28,662 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:54:28,662 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:54:28,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:54:28,662 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_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86b203c3a804c103d90401bd32cfcff28939b920 [2021-10-13 06:54:29,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:54:29,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:54:29,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:54:29,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:54:29,050 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:54:29,051 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 06:54:29,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/4aea0a39e/9408a3e7960e4bf08ccced57906e8025/FLAG45f5584bf [2021-10-13 06:54:29,768 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:54:29,769 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-1.i [2021-10-13 06:54:29,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/4aea0a39e/9408a3e7960e4bf08ccced57906e8025/FLAG45f5584bf [2021-10-13 06:54:30,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/data/4aea0a39e/9408a3e7960e4bf08ccced57906e8025 [2021-10-13 06:54:30,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:54:30,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:54:30,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:54:30,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:54:30,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:54:30,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbd6a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30, skipping insertion in model container [2021-10-13 06:54:30,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:54:30,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:54:30,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:54:30,406 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 06:54:30,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:54:30,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:54:30,496 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:54:30,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:54:30,565 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:54:30,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30 WrapperNode [2021-10-13 06:54:30,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:54:30,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:54:30,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:54:30,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:54:30,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:54:30,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:54:30,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:54:30,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:54:30,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:54:30,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:54:30,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:54:30,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:54:30,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (1/1) ... [2021-10-13 06:54:30,644 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:54:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:54:30,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:54:30,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:54:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 06:54:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 06:54:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:54:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:54:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:54:30,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:54:31,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:54:31,138 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 06:54:31,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:31 BoogieIcfgContainer [2021-10-13 06:54:31,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:54:31,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:54:31,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:54:31,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:54:31,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:54:30" (1/3) ... [2021-10-13 06:54:31,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac793bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:31, skipping insertion in model container [2021-10-13 06:54:31,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:54:30" (2/3) ... [2021-10-13 06:54:31,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ac793bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:54:31, skipping insertion in model container [2021-10-13 06:54:31,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:31" (3/3) ... [2021-10-13 06:54:31,153 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-1.i [2021-10-13 06:54:31,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:54:31,160 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-10-13 06:54:31,195 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:54:31,202 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, mConcurrency=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 [2021-10-13 06:54:31,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-10-13 06:54:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.68) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:54:31,224 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:31,225 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:31,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:31,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:31,231 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2021-10-13 06:54:31,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:31,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370127590] [2021-10-13 06:54:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:31,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:31,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:31,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:31,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:54:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:31,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 06:54:31,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:31,437 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 [2021-10-13 06:54:31,538 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 06:54:31,539 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 [2021-10-13 06:54:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:31,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:31,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:31,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:31,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370127590] [2021-10-13 06:54:31,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370127590] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:31,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:31,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-13 06:54:31,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202427849] [2021-10-13 06:54:31,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:54:31,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:54:31,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:54:31,826 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.68) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:32,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:32,030 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-10-13 06:54:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 06:54:32,033 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 [2021-10-13 06:54:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:32,042 INFO L225 Difference]: With dead ends: 36 [2021-10-13 06:54:32,043 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 06:54:32,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:54:32,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 06:54:32,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-13 06:54:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 31 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-10-13 06:54:32,094 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 9 [2021-10-13 06:54:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:32,094 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-10-13 06:54:32,095 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) [2021-10-13 06:54:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-10-13 06:54:32,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 06:54:32,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:32,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:32,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:32,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:32,308 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:32,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:32,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2021-10-13 06:54:32,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:32,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239721545] [2021-10-13 06:54:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:32,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:32,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:32,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:54:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:32,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 06:54:32,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:32,393 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 [2021-10-13 06:54:32,401 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 [2021-10-13 06:54:32,509 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 06:54:32,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 31 [2021-10-13 06:54:32,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 06:54:32,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-10-13 06:54:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:32,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:33,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:33,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:33,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239721545] [2021-10-13 06:54:33,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239721545] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:33,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:33,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 06:54:33,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010242221] [2021-10-13 06:54:33,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 06:54:33,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:33,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 06:54:33,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:54:33,313 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:37,961 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-10-13 06:54:37,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 06:54:37,970 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 [2021-10-13 06:54:37,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:37,971 INFO L225 Difference]: With dead ends: 27 [2021-10-13 06:54:37,971 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 06:54:37,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 618.6ms TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-13 06:54:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 06:54:37,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-13 06:54:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 26 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-10-13 06:54:37,976 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 9 [2021-10-13 06:54:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:37,976 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-10-13 06:54:37,976 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) [2021-10-13 06:54:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-10-13 06:54:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 06:54:37,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:37,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:37,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:38,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:38,187 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:38,188 INFO L82 PathProgramCache]: Analyzing trace with hash 711566546, now seen corresponding path program 1 times [2021-10-13 06:54:38,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:38,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164960339] [2021-10-13 06:54:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:38,189 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:38,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:38,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:38,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:54:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:38,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 06:54:38,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:38,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:38,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:38,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164960339] [2021-10-13 06:54:38,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164960339] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:38,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:38,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 06:54:38,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707351279] [2021-10-13 06:54:38,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 06:54:38,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 06:54:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:54:38,886 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:39,085 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2021-10-13 06:54:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 06:54:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 06:54:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:39,087 INFO L225 Difference]: With dead ends: 26 [2021-10-13 06:54:39,087 INFO L226 Difference]: Without dead ends: 26 [2021-10-13 06:54:39,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 254.2ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-10-13 06:54:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-13 06:54:39,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-13 06:54:39,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 25 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:39,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2021-10-13 06:54:39,091 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 17 [2021-10-13 06:54:39,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:39,092 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2021-10-13 06:54:39,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:39,092 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2021-10-13 06:54:39,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 06:54:39,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:39,093 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:39,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 06:54:39,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:39,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 915652980, now seen corresponding path program 1 times [2021-10-13 06:54:39,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:39,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467760695] [2021-10-13 06:54:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:39,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:39,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:39,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 06:54:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:39,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 06:54:39,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:39,481 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 [2021-10-13 06:54:39,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-13 06:54:39,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:54:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:39,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:39,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:39,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467760695] [2021-10-13 06:54:39,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467760695] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:39,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:39,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-10-13 06:54:39,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513006897] [2021-10-13 06:54:39,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 06:54:39,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 06:54:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 06:54:39,785 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:40,109 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-10-13 06:54:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 06:54:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 06:54:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:40,111 INFO L225 Difference]: With dead ends: 25 [2021-10-13 06:54:40,111 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 06:54:40,111 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 280.7ms TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-10-13 06:54:40,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 06:54:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-13 06:54:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 24 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-10-13 06:54:40,114 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 19 [2021-10-13 06:54:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:40,115 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-10-13 06:54:40,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-10-13 06:54:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 06:54:40,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:40,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:40,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:40,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:40,317 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:40,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1679528615, now seen corresponding path program 1 times [2021-10-13 06:54:40,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:40,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741742355] [2021-10-13 06:54:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:40,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:40,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:40,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 06:54:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:40,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 06:54:40,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:40,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-13 06:54:41,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-10-13 06:54:41,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 06:54:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:41,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:41,669 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:41,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741742355] [2021-10-13 06:54:41,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741742355] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:41,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:41,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 17 [2021-10-13 06:54:41,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059479201] [2021-10-13 06:54:41,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 06:54:41,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:41,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 06:54:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-10-13 06:54:41,671 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:42,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:42,795 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-10-13 06:54:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 06:54:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 06:54:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:42,797 INFO L225 Difference]: With dead ends: 24 [2021-10-13 06:54:42,797 INFO L226 Difference]: Without dead ends: 24 [2021-10-13 06:54:42,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1369.6ms TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2021-10-13 06:54:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-13 06:54:42,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-13 06:54:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-10-13 06:54:42,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 20 [2021-10-13 06:54:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:42,801 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-10-13 06:54:42,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-10-13 06:54:42,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 06:54:42,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:42,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:42,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 06:54:43,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:43,017 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:43,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:43,017 INFO L82 PathProgramCache]: Analyzing trace with hash -525779434, now seen corresponding path program 1 times [2021-10-13 06:54:43,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:43,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092130777] [2021-10-13 06:54:43,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:43,018 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:43,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:43,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:43,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 06:54:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:43,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 06:54:43,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:43,164 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 [2021-10-13 06:54:43,246 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 06:54:43,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-10-13 06:54:43,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-10-13 06:54:43,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2021-10-13 06:54:43,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2021-10-13 06:54:43,967 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-13 06:54:43,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 45 [2021-10-13 06:54:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:44,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:54:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:46,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:54:46,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092130777] [2021-10-13 06:54:46,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092130777] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:54:46,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:54:46,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 19 [2021-10-13 06:54:46,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135248492] [2021-10-13 06:54:46,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 06:54:46,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:54:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 06:54:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=326, Unknown=1, NotChecked=0, Total=380 [2021-10-13 06:54:46,597 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:54:51,467 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-13 06:54:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 06:54:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 06:54:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:54:51,468 INFO L225 Difference]: With dead ends: 23 [2021-10-13 06:54:51,468 INFO L226 Difference]: Without dead ends: 23 [2021-10-13 06:54:51,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 7228.8ms TimeCoverageRelationStatistics Valid=163, Invalid=648, Unknown=1, NotChecked=0, Total=812 [2021-10-13 06:54:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-13 06:54:51,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-13 06:54:51,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:51,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2021-10-13 06:54:51,472 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 21 [2021-10-13 06:54:51,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:54:51,472 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2021-10-13 06:54:51,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:54:51,473 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2021-10-13 06:54:51,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 06:54:51,473 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:54:51,474 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 06:54:51,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 06:54:51,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:54:51,684 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 11 more)] === [2021-10-13 06:54:51,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:54:51,685 INFO L82 PathProgramCache]: Analyzing trace with hash 880706812, now seen corresponding path program 1 times [2021-10-13 06:54:51,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:54:51,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311621457] [2021-10-13 06:54:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:54:51,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:54:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:54:51,686 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:54:51,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 06:54:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:54:51,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 06:54:51,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:54:51,829 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 [2021-10-13 06:54:52,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-10-13 06:54:52,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 34 [2021-10-13 06:54:52,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 30 [2021-10-13 06:54:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:54:52,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:55:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:55:11,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:55:11,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311621457] [2021-10-13 06:55:11,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311621457] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:55:11,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:55:11,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 24 [2021-10-13 06:55:11,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339388578] [2021-10-13 06:55:11,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 06:55:11,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:55:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 06:55:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=532, Unknown=6, NotChecked=0, Total=600 [2021-10-13 06:55:11,901 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:55:15,512 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-13 06:55:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 06:55:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 06:55:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:55:15,513 INFO L225 Difference]: With dead ends: 22 [2021-10-13 06:55:15,513 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:55:15,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 21806.4ms TimeCoverageRelationStatistics Valid=194, Invalid=1132, Unknown=6, NotChecked=0, Total=1332 [2021-10-13 06:55:15,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:55:15,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:55:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:55:15,515 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-10-13 06:55:15,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:55:15,515 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:55:15,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 25 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:55:15,516 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:55:15,516 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:55:15,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 06:55:15,518 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 06:55:15,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 06:55:15,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 06:55:15,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 06:55:15,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 06:55:15,519 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 06:55:15,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 06:55:15,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 06:55:15,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 06:55:15,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 06:55:15,520 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 06:55:15,521 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 06:55:15,521 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 06:55:15,521 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 06:55:15,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 06:55:15,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:55:15,730 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:55:15,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:55:15 BoogieIcfgContainer [2021-10-13 06:55:15,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:55:15,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:55:15,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:55:15,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:55:15,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:54:31" (3/4) ... [2021-10-13 06:55:15,735 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:55:15,745 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 06:55:15,745 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 06:55:15,746 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 06:55:15,746 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:55:15,799 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:55:15,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:55:15,801 INFO L168 Benchmark]: Toolchain (without parser) took 45743.01 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 49.8 MB in the beginning and 42.9 MB in the end (delta: 6.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:15,801 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:15,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 506.83 ms. Allocated memory is still 86.0 MB. Free memory was 49.6 MB in the beginning and 61.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:15,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 59.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:15,802 INFO L168 Benchmark]: Boogie Preprocessor took 26.17 ms. Allocated memory is still 86.0 MB. Free memory was 59.5 MB in the beginning and 58.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:55:15,803 INFO L168 Benchmark]: RCFGBuilder took 504.18 ms. Allocated memory is still 86.0 MB. Free memory was 57.9 MB in the beginning and 46.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:15,803 INFO L168 Benchmark]: TraceAbstraction took 44589.78 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 45.7 MB in the beginning and 46.1 MB in the end (delta: -415.7 kB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:15,803 INFO L168 Benchmark]: Witness Printer took 67.63 ms. Allocated memory is still 111.1 MB. Free memory was 46.1 MB in the beginning and 42.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 06:55:15,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 506.83 ms. Allocated memory is still 86.0 MB. Free memory was 49.6 MB in the beginning and 61.4 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.78 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 59.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.17 ms. Allocated memory is still 86.0 MB. Free memory was 59.5 MB in the beginning and 58.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 504.18 ms. Allocated memory is still 86.0 MB. Free memory was 57.9 MB in the beginning and 46.3 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 44589.78 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 45.7 MB in the beginning and 46.1 MB in the end (delta: -415.7 kB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.63 ms. Allocated memory is still 111.1 MB. Free memory was 46.1 MB in the beginning and 42.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 570]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 571]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 572]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 573]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 574]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 568]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 44536.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 15.0ms, AutomataDifference: 15035.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 380 SDslu, 120 SDs, 0 SdLazy, 748 SolverSat, 81 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5997.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 31691.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.5ms AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 65.5ms SsaConstructionTime, 176.0ms SatisfiabilityAnalysisTime, 27062.0ms InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 220 ConstructedInterpolants, 52 QuantifiedInterpolants, 3338 SizeOfPredicates, 40 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 06:55:15,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9d79c87-9cc0-4ee2-b0f3-6b0887b4f319/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...