./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/verifythis/tree_del_iter.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/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_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 ............................................................................................................................................ 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_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/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_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/tree_del_iter.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/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-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3996209b60f87d3e4d0d43d86633911b8e11add8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:12:32,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:12:32,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:12:32,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:12:32,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:12:32,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:12:32,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:12:32,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:12:32,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:12:32,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:12:32,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:12:32,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:12:32,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:12:32,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:12:32,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:12:32,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:12:32,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:12:32,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:12:32,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:12:32,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:12:32,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:12:32,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:12:32,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:12:32,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:12:32,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:12:32,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:12:32,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:12:33,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:12:33,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:12:33,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:12:33,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:12:33,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:12:33,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:12:33,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:12:33,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:12:33,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:12:33,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:12:33,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:12:33,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:12:33,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:12:33,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:12:33,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2021-10-13 08:12:33,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:12:33,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:12:33,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:12:33,062 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:12:33,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:12:33,063 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:12:33,063 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:12:33,063 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:12:33,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:12:33,064 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:12:33,065 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:12:33,065 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:12:33,065 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:12:33,065 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:12:33,066 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:12:33,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:12:33,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:12:33,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:12:33,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:12:33,067 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:12:33,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:12:33,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:12:33,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:12:33,068 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:12:33,068 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:12:33,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:12:33,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:12:33,071 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:12:33,071 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:12:33,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:12:33,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:12:33,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:33,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:12:33,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:12:33,072 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:12:33,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:12:33,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:12:33,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:12:33,073 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_65a2867d-a03b-45a5-bd56-5d620ccc826b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2021-10-13 08:12:33,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:12:33,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:12:33,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:12:33,383 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:12:33,384 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:12:33,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-13 08:12:33,467 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/cf06f7ccd/7e79bced0eb14e64974ae8781dbb83a8/FLAGbf24cbdc5 [2021-10-13 08:12:34,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:12:34,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-13 08:12:34,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/cf06f7ccd/7e79bced0eb14e64974ae8781dbb83a8/FLAGbf24cbdc5 [2021-10-13 08:12:34,387 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/cf06f7ccd/7e79bced0eb14e64974ae8781dbb83a8 [2021-10-13 08:12:34,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:12:34,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:12:34,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:34,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:12:34,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:12:34,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:34" (1/1) ... [2021-10-13 08:12:34,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a318704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:34, skipping insertion in model container [2021-10-13 08:12:34,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:34" (1/1) ... [2021-10-13 08:12:34,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:12:34,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:12:34,609 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-13 08:12:34,630 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 08:12:34,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:34,675 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 08:12:34,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9a6a5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:34, skipping insertion in model container [2021-10-13 08:12:34,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:34,677 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 08:12:34,680 INFO L168 Benchmark]: Toolchain (without parser) took 286.63 ms. Allocated memory is still 127.9 MB. Free memory was 92.5 MB in the beginning and 101.8 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:34,682 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:12:34,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.42 ms. Allocated memory is still 127.9 MB. Free memory was 92.1 MB in the beginning and 101.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:12:34,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 40.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.42 ms. Allocated memory is still 127.9 MB. Free memory was 92.1 MB in the beginning and 101.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 28]: 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 08:12:36,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:12:36,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:12:37,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:12:37,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:12:37,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:12:37,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:12:37,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:12:37,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:12:37,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:12:37,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:12:37,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:12:37,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:12:37,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:12:37,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:12:37,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:12:37,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:12:37,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:12:37,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:12:37,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:12:37,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:12:37,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:12:37,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:12:37,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:12:37,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:12:37,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:12:37,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:12:37,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:12:37,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:12:37,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:12:37,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:12:37,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:12:37,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:12:37,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:12:37,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:12:37,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:12:37,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:12:37,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:12:37,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:12:37,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:12:37,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:12:37,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/config/svcomp-MemCleanup-32bit-Taipan_Bitvector.epf [2021-10-13 08:12:37,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:12:37,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:12:37,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:12:37,189 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:12:37,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:12:37,190 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:12:37,190 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:12:37,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:12:37,191 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:12:37,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 08:12:37,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 08:12:37,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:12:37,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:12:37,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 08:12:37,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:12:37,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:12:37,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:12:37,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 08:12:37,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 08:12:37,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:12:37,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:12:37,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:12:37,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:12:37,197 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:12:37,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:12:37,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:12:37,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:12:37,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:12:37,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:37,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:12:37,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:12:37,199 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:12:37,199 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:12:37,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:12:37,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:12:37,200 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_65a2867d-a03b-45a5-bd56-5d620ccc826b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3996209b60f87d3e4d0d43d86633911b8e11add8 [2021-10-13 08:12:37,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:12:37,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:12:37,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:12:37,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:12:37,588 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:12:37,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-13 08:12:37,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/5eaec1895/152f87ac9c754e6ba66abd78f49b0cf5/FLAG92941c919 [2021-10-13 08:12:38,281 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:12:38,282 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/sv-benchmarks/c/verifythis/tree_del_iter.c [2021-10-13 08:12:38,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/5eaec1895/152f87ac9c754e6ba66abd78f49b0cf5/FLAG92941c919 [2021-10-13 08:12:38,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/data/5eaec1895/152f87ac9c754e6ba66abd78f49b0cf5 [2021-10-13 08:12:38,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:12:38,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:12:38,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:38,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:12:38,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:12:38,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:38" (1/1) ... [2021-10-13 08:12:38,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f06a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:38, skipping insertion in model container [2021-10-13 08:12:38,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:12:38" (1/1) ... [2021-10-13 08:12:38,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:12:38,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:12:38,783 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-13 08:12:38,803 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 08:12:38,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:38,836 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 08:12:38,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:12:38,846 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-13 08:12:38,857 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 08:12:38,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:38,898 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:12:38,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/sv-benchmarks/c/verifythis/tree_del_iter.c[586,599] [2021-10-13 08:12:38,981 WARN L1507 CHandler]: Possible shadowing of function min [2021-10-13 08:12:39,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:12:39,033 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:12:39,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39 WrapperNode [2021-10-13 08:12:39,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:12:39,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:39,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:12:39,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:12:39,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:12:39,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:12:39,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:12:39,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:12:39,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:12:39,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:12:39,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:12:39,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:12:39,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (1/1) ... [2021-10-13 08:12:39,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:12:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:12:39,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:12:39,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:12:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:12:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:12:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:12:39,237 INFO L130 BoogieDeclarations]: Found specification of procedure min [2021-10-13 08:12:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2021-10-13 08:12:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:12:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:12:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-10-13 08:12:39,238 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-10-13 08:12:39,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:12:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure size [2021-10-13 08:12:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2021-10-13 08:12:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:12:39,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:12:39,239 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2021-10-13 08:12:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2021-10-13 08:12:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:12:39,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:12:40,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:12:40,327 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-13 08:12:40,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:40 BoogieIcfgContainer [2021-10-13 08:12:40,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:12:40,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:12:40,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:12:40,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:12:40,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:12:38" (1/3) ... [2021-10-13 08:12:40,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694cd4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:40, skipping insertion in model container [2021-10-13 08:12:40,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:12:39" (2/3) ... [2021-10-13 08:12:40,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@694cd4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:12:40, skipping insertion in model container [2021-10-13 08:12:40,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:40" (3/3) ... [2021-10-13 08:12:40,343 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2021-10-13 08:12:40,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:12:40,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-10-13 08:12:40,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:12:40,398 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 08:12:40,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-10-13 08:12:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 104 states have (on average 1.8173076923076923) internal successors, (189), 171 states have internal predecessors, (189), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-10-13 08:12:40,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:12:40,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:40,427 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:12:40,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting nondet_treeErr0REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:40,434 INFO L82 PathProgramCache]: Analyzing trace with hash 88067099, now seen corresponding path program 1 times [2021-10-13 08:12:40,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:40,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060949210] [2021-10-13 08:12:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:40,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:40,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:40,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:40,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:12:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:40,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:12:40,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:40,637 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 08:12:40,649 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 08:12:40,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:40,675 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 08:12:40,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:40,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060949210] [2021-10-13 08:12:40,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060949210] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:40,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:40,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:12:40,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130907527] [2021-10-13 08:12:40,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:12:40,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:12:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:12:40,710 INFO L87 Difference]: Start difference. First operand has 190 states, 104 states have (on average 1.8173076923076923) internal successors, (189), 171 states have internal predecessors, (189), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:41,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:41,061 INFO L93 Difference]: Finished difference Result 191 states and 212 transitions. [2021-10-13 08:12:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:12:41,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 08:12:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:41,080 INFO L225 Difference]: With dead ends: 191 [2021-10-13 08:12:41,080 INFO L226 Difference]: Without dead ends: 188 [2021-10-13 08:12:41,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:12:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-13 08:12:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2021-10-13 08:12:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 167 states have internal predecessors, (176), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-10-13 08:12:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 204 transitions. [2021-10-13 08:12:41,168 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 204 transitions. Word has length 5 [2021-10-13 08:12:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:41,168 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 204 transitions. [2021-10-13 08:12:41,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 204 transitions. [2021-10-13 08:12:41,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:12:41,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:41,173 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:12:41,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:41,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:41,387 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting nondet_treeErr1REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash 88067100, now seen corresponding path program 1 times [2021-10-13 08:12:41,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:41,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845499849] [2021-10-13 08:12:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:41,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:41,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:41,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:41,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:12:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:41,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:12:41,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:41,509 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 08:12:41,525 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 08:12:41,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:41,612 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 08:12:41,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:41,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845499849] [2021-10-13 08:12:41,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845499849] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:41,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:41,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 08:12:41,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548226062] [2021-10-13 08:12:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:12:41,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:41,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:12:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:41,621 INFO L87 Difference]: Start difference. First operand 186 states and 204 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:42,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:42,305 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2021-10-13 08:12:42,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:12:42,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 08:12:42,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:42,308 INFO L225 Difference]: With dead ends: 185 [2021-10-13 08:12:42,308 INFO L226 Difference]: Without dead ends: 185 [2021-10-13 08:12:42,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:12:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-13 08:12:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-10-13 08:12:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 102 states have (on average 1.7156862745098038) internal successors, (175), 166 states have internal predecessors, (175), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-10-13 08:12:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 203 transitions. [2021-10-13 08:12:42,323 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 203 transitions. Word has length 5 [2021-10-13 08:12:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 203 transitions. [2021-10-13 08:12:42,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:12:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 203 transitions. [2021-10-13 08:12:42,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:12:42,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:42,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:42,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:42,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:42,536 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting minErr0REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash 399009253, now seen corresponding path program 1 times [2021-10-13 08:12:42,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:42,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904983573] [2021-10-13 08:12:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:42,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:42,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:42,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:42,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:12:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:42,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:12:42,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:42,753 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 08:12:42,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:42,903 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 08:12:42,904 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:42,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904983573] [2021-10-13 08:12:42,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904983573] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:42,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:42,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-13 08:12:42,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484588406] [2021-10-13 08:12:42,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:12:42,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:12:42,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:12:42,907 INFO L87 Difference]: Start difference. First operand 185 states and 203 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:12:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:43,047 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2021-10-13 08:12:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:12:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-13 08:12:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:43,052 INFO L225 Difference]: With dead ends: 306 [2021-10-13 08:12:43,052 INFO L226 Difference]: Without dead ends: 306 [2021-10-13 08:12:43,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 75.0ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:12:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-10-13 08:12:43,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 193. [2021-10-13 08:12:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 107 states have (on average 1.6822429906542056) internal successors, (180), 172 states have internal predecessors, (180), 15 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-10-13 08:12:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 213 transitions. [2021-10-13 08:12:43,081 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 213 transitions. Word has length 11 [2021-10-13 08:12:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:43,081 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 213 transitions. [2021-10-13 08:12:43,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-13 08:12:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 213 transitions. [2021-10-13 08:12:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:12:43,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:43,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:43,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:43,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:43,301 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting nondet_treeErr2REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:43,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:43,302 INFO L82 PathProgramCache]: Analyzing trace with hash -880475284, now seen corresponding path program 1 times [2021-10-13 08:12:43,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:43,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372781288] [2021-10-13 08:12:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:43,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:43,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:43,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:43,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:12:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:43,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 08:12:43,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:43,418 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 08:12:43,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:43,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:43,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:43,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372781288] [2021-10-13 08:12:43,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372781288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:43,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:43,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 08:12:43,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072852812] [2021-10-13 08:12:43,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:12:43,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:43,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:12:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:12:43,603 INFO L87 Difference]: Start difference. First operand 193 states and 213 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 08:12:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:44,186 INFO L93 Difference]: Finished difference Result 191 states and 211 transitions. [2021-10-13 08:12:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:12:44,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 11 [2021-10-13 08:12:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:44,189 INFO L225 Difference]: With dead ends: 191 [2021-10-13 08:12:44,189 INFO L226 Difference]: Without dead ends: 191 [2021-10-13 08:12:44,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:12:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-10-13 08:12:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2021-10-13 08:12:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 107 states have (on average 1.6635514018691588) internal successors, (178), 170 states have internal predecessors, (178), 15 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2021-10-13 08:12:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 211 transitions. [2021-10-13 08:12:44,199 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 211 transitions. Word has length 11 [2021-10-13 08:12:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:44,199 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 211 transitions. [2021-10-13 08:12:44,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-13 08:12:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 211 transitions. [2021-10-13 08:12:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 08:12:44,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:44,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:44,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:44,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:44,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:44,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:44,417 INFO L82 PathProgramCache]: Analyzing trace with hash -880475283, now seen corresponding path program 1 times [2021-10-13 08:12:44,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:44,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289811806] [2021-10-13 08:12:44,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:44,418 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:44,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:44,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 08:12:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:44,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 08:12:44,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:44,529 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 08:12:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:44,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:12:44,897 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:44,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289811806] [2021-10-13 08:12:44,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289811806] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:44,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:44,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 08:12:44,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6732838] [2021-10-13 08:12:44,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 08:12:44,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 08:12:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:12:44,899 INFO L87 Difference]: Start difference. First operand 191 states and 211 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:12:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:45,996 INFO L93 Difference]: Finished difference Result 203 states and 231 transitions. [2021-10-13 08:12:45,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:12:45,997 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), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-10-13 08:12:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:45,999 INFO L225 Difference]: With dead ends: 203 [2021-10-13 08:12:45,999 INFO L226 Difference]: Without dead ends: 203 [2021-10-13 08:12:45,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 08:12:46,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-13 08:12:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2021-10-13 08:12:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 110 states have (on average 1.6454545454545455) internal successors, (181), 172 states have internal predecessors, (181), 16 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (20), 17 states have call predecessors, (20), 16 states have call successors, (20) [2021-10-13 08:12:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 217 transitions. [2021-10-13 08:12:46,010 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 217 transitions. Word has length 11 [2021-10-13 08:12:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:46,010 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 217 transitions. [2021-10-13 08:12:46,010 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), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:12:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 217 transitions. [2021-10-13 08:12:46,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:12:46,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:46,011 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 08:12:46,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:12:46,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:46,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting sizeErr0REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 639504337, now seen corresponding path program 1 times [2021-10-13 08:12:46,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:46,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303263908] [2021-10-13 08:12:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:46,224 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:46,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:46,227 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:46,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 08:12:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:46,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 08:12:46,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:46,480 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 08:12:46,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:12:46,601 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 08:12:46,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:12:46,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303263908] [2021-10-13 08:12:46,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303263908] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:12:46,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:12:46,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-13 08:12:46,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788963219] [2021-10-13 08:12:46,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 08:12:46,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:12:46,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 08:12:46,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 08:12:46,603 INFO L87 Difference]: Start difference. First operand 195 states and 217 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:12:46,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:12:46,729 INFO L93 Difference]: Finished difference Result 312 states and 342 transitions. [2021-10-13 08:12:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 08:12:46,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-10-13 08:12:46,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:12:46,734 INFO L225 Difference]: With dead ends: 312 [2021-10-13 08:12:46,735 INFO L226 Difference]: Without dead ends: 312 [2021-10-13 08:12:46,735 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 08:12:46,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-13 08:12:46,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 242. [2021-10-13 08:12:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 153 states have (on average 1.673202614379085) internal successors, (256), 215 states have internal predecessors, (256), 19 states have call successors, (19), 6 states have call predecessors, (19), 7 states have return successors, (23), 20 states have call predecessors, (23), 19 states have call successors, (23) [2021-10-13 08:12:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 298 transitions. [2021-10-13 08:12:46,757 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 298 transitions. Word has length 17 [2021-10-13 08:12:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:12:46,757 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 298 transitions. [2021-10-13 08:12:46,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-13 08:12:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 298 transitions. [2021-10-13 08:12:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 08:12:46,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:12:46,760 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:12:46,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-13 08:12:46,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:12:46,975 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting nondet_treeErr3REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:12:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:12:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash 667690905, now seen corresponding path program 1 times [2021-10-13 08:12:46,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:12:46,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144160598] [2021-10-13 08:12:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:12:46,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:12:46,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:12:46,977 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:12:46,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 08:12:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:12:47,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 08:12:47,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:12:47,285 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 08:12:47,291 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 08:12:47,601 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 08:12:47,601 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 08:12:47,614 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:12:47,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-10-13 08:12:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 08:12:47,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:02,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:02,818 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 124 treesize of output 128 [2021-10-13 08:13:02,847 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:02,847 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 128 treesize of output 132 [2021-10-13 08:13:06,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:06,163 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 118 treesize of output 122 [2021-10-13 08:13:06,196 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:06,197 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 122 treesize of output 126 [2021-10-13 08:13:10,780 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_nondet_tree_~n~0.offset_BEFORE_CALL_4 (_ BitVec 32)) (v_nondet_tree_~n~0.base_20 (_ BitVec 32)) (v_nondet_tree_~n~0.base_BEFORE_CALL_6 (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (and (bvule .cse0 (select (store |c_#length| v_nondet_tree_~n~0.base_20 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_6)) (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse0))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| v_nondet_tree_~n~0.base_20))))))))) (exists ((v_nondet_tree_~n~0.base_19 (_ BitVec 32))) (and (let ((.cse1 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4))) (or (not (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_4) .cse1)) (not (bvule .cse1 (select (store |c_old(#length)| v_nondet_tree_~n~0.base_19 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_6))))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_nondet_tree_~n~0.base_19)))))))))) is different from true [2021-10-13 08:13:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 08:13:10,908 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:13:10,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144160598] [2021-10-13 08:13:10,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144160598] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:13:10,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1817863886] [2021-10-13 08:13:10,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:10,911 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:13:10,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:13:10,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:13:10,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 08:13:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:11,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 08:13:11,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:13:11,304 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 08:13:11,312 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 08:13:11,569 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 08:13:11,569 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 28 treesize of output 30 [2021-10-13 08:13:11,581 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:13:11,582 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 27 treesize of output 27 [2021-10-13 08:13:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 08:13:11,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:30,301 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:30,301 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 118 treesize of output 122 [2021-10-13 08:13:30,341 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:30,341 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 122 treesize of output 126 [2021-10-13 08:13:32,736 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:32,736 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 122 treesize of output 126 [2021-10-13 08:13:32,756 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:32,757 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 126 treesize of output 130 [2021-10-13 08:13:37,106 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_nondet_tree_~n~0.offset_BEFORE_CALL_6 (_ BitVec 32)) (v_nondet_tree_~n~0.base_BEFORE_CALL_8 (_ BitVec 32)) (v_nondet_tree_~n~0.base_26 (_ BitVec 32))) (or (exists ((v_nondet_tree_~n~0.base_19 (_ BitVec 32))) (and (let ((.cse0 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6))) (or (not (bvule .cse0 (select (store |c_old(#length)| v_nondet_tree_~n~0.base_19 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_8))) (not (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6) .cse0)))) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| v_nondet_tree_~n~0.base_19)))))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_nondet_tree_~n~0.base_26))))) (let ((.cse1 (bvadd (_ bv8 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6))) (and (bvule .cse1 (select (store |c_#length| v_nondet_tree_~n~0.base_26 (_ bv12 32)) v_nondet_tree_~n~0.base_BEFORE_CALL_8)) (bvule (bvadd (_ bv4 32) v_nondet_tree_~n~0.offset_BEFORE_CALL_6) .cse1))))) is different from false [2021-10-13 08:13:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 08:13:37,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1817863886] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:13:37,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551664579] [2021-10-13 08:13:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:13:37,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:13:37,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:13:37,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:13:37,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 08:13:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:13:37,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 08:13:37,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:13:37,535 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 08:13:42,449 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 08:13:42,449 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 12 treesize of output 14 [2021-10-13 08:13:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-13 08:13:42,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:13:54,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:13:54,630 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 78 treesize of output 82 [2021-10-13 08:13:55,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for v_prenex_14 [2021-10-13 08:13:55,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 08:13:55,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 13 [2021-10-13 08:13:55,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247025544] [2021-10-13 08:13:55,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 08:13:55,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:13:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 08:13:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=146, Unknown=17, NotChecked=54, Total=272 [2021-10-13 08:13:55,506 INFO L87 Difference]: Start difference. First operand 242 states and 298 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 8 states have internal predecessors, (45), 6 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-13 08:15:23,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:23,098 INFO L93 Difference]: Finished difference Result 151 states and 158 transitions. [2021-10-13 08:15:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:15:23,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 8 states have internal predecessors, (45), 6 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 35 [2021-10-13 08:15:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:23,101 INFO L225 Difference]: With dead ends: 151 [2021-10-13 08:15:23,101 INFO L226 Difference]: Without dead ends: 148 [2021-10-13 08:15:23,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 49843.7ms TimeCoverageRelationStatistics Valid=67, Invalid=164, Unknown=17, NotChecked=58, Total=306 [2021-10-13 08:15:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-13 08:15:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-10-13 08:15:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 85 states have (on average 1.6352941176470588) internal successors, (139), 135 states have internal predecessors, (139), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-10-13 08:15:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 155 transitions. [2021-10-13 08:15:23,106 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 155 transitions. Word has length 35 [2021-10-13 08:15:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:23,106 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 155 transitions. [2021-10-13 08:15:23,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 8 states have internal predecessors, (45), 6 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-10-13 08:15:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 155 transitions. [2021-10-13 08:15:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:15:23,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:15:23,108 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, 1, 1, 1, 1] [2021-10-13 08:15:23,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 08:15:23,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 08:15:23,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 08:15:23,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:15:23,709 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting tree_inorderErr1REQUIRES_VIOLATION === [nondet_treeErr0REQUIRES_VIOLATION, nondet_treeErr1REQUIRES_VIOLATION, nondet_treeErr2REQUIRES_VIOLATION, nondet_treeErr3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 08:15:23,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:15:23,709 INFO L82 PathProgramCache]: Analyzing trace with hash 119143892, now seen corresponding path program 1 times [2021-10-13 08:15:23,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:15:23,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170413452] [2021-10-13 08:15:23,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:15:23,710 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:15:23,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:15:23,711 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:15:23,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 08:15:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:15:23,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 08:15:23,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:15:24,046 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 08:15:24,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:15:24,139 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 08:15:24,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:15:24,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170413452] [2021-10-13 08:15:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170413452] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:15:24,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:15:24,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 08:15:24,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362814199] [2021-10-13 08:15:24,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 08:15:24,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:15:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 08:15:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:24,140 INFO L87 Difference]: Start difference. First operand 148 states and 155 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 08:15:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:15:24,163 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2021-10-13 08:15:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 08:15:24,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-10-13 08:15:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:15:24,164 INFO L225 Difference]: With dead ends: 20 [2021-10-13 08:15:24,164 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:15:24,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:15:24,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:15:24,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:15:24,165 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 08:15:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:15:24,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-10-13 08:15:24,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:15:24,165 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:15:24,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-13 08:15:24,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:15:24,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:15:24,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr0REQUIRES_VIOLATION [2021-10-13 08:15:24,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr1REQUIRES_VIOLATION [2021-10-13 08:15:24,168 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr2REQUIRES_VIOLATION [2021-10-13 08:15:24,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr3REQUIRES_VIOLATION [2021-10-13 08:15:24,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr4REQUIRES_VIOLATION [2021-10-13 08:15:24,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location nondet_treeErr5REQUIRES_VIOLATION [2021-10-13 08:15:24,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location minErr0REQUIRES_VIOLATION [2021-10-13 08:15:24,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location minErr1REQUIRES_VIOLATION [2021-10-13 08:15:24,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location minErr2REQUIRES_VIOLATION [2021-10-13 08:15:24,177 INFO L764 garLoopResultBuilder]: Registering result SAFE for location minErr3REQUIRES_VIOLATION [2021-10-13 08:15:24,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location minErr4REQUIRES_VIOLATION [2021-10-13 08:15:24,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location minErr5REQUIRES_VIOLATION [2021-10-13 08:15:24,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sizeErr0REQUIRES_VIOLATION [2021-10-13 08:15:24,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sizeErr1REQUIRES_VIOLATION [2021-10-13 08:15:24,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sizeErr2REQUIRES_VIOLATION [2021-10-13 08:15:24,178 INFO L764 garLoopResultBuilder]: Registering result SAFE for location sizeErr3REQUIRES_VIOLATION [2021-10-13 08:15:24,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 08:15:24,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 08:15:24,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:15:24,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 08:15:24,179 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 08:15:24,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 08:15:24,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 08:15:24,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 08:15:24,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 08:15:24,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 08:15:24,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 08:15:24,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 08:15:24,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 08:15:24,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 08:15:24,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 08:15:24,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 08:15:24,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 08:15:24,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,182 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 08:15:24,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-13 08:15:24,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-13 08:15:24,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-13 08:15:24,183 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-13 08:15:24,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-13 08:15:24,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:15:24,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:15:24,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-13 08:15:24,184 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-13 08:15:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-13 08:15:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-13 08:15:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:15:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,185 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 08:15:24,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 08:15:24,186 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr0REQUIRES_VIOLATION [2021-10-13 08:15:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr1REQUIRES_VIOLATION [2021-10-13 08:15:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr2REQUIRES_VIOLATION [2021-10-13 08:15:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr3REQUIRES_VIOLATION [2021-10-13 08:15:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr4REQUIRES_VIOLATION [2021-10-13 08:15:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr5REQUIRES_VIOLATION [2021-10-13 08:15:24,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr6REQUIRES_VIOLATION [2021-10-13 08:15:24,188 INFO L764 garLoopResultBuilder]: Registering result SAFE for location tree_inorderErr7REQUIRES_VIOLATION [2021-10-13 08:15:24,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 08:15:24,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:15:24,404 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:15:24,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:15:24 BoogieIcfgContainer [2021-10-13 08:15:24,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:15:24,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:15:24,407 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:15:24,407 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:15:24,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:12:40" (3/4) ... [2021-10-13 08:15:24,410 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:15:24,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure min [2021-10-13 08:15:24,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure size [2021-10-13 08:15:24,416 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_tree [2021-10-13 08:15:24,417 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure tree_inorder [2021-10-13 08:15:24,425 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-10-13 08:15:24,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 08:15:24,426 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 08:15:24,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:15:24,506 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:15:24,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:15:24,510 INFO L168 Benchmark]: Toolchain (without parser) took 165891.56 ms. Allocated memory was 60.8 MB in the beginning and 96.5 MB in the end (delta: 35.7 MB). Free memory was 38.8 MB in the beginning and 61.2 MB in the end (delta: -22.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,511 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:15:24,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.13 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 38.6 MB in the beginning and 61.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.34 ms. Allocated memory is still 79.7 MB. Free memory was 61.5 MB in the beginning and 59.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,512 INFO L168 Benchmark]: Boogie Preprocessor took 60.18 ms. Allocated memory is still 79.7 MB. Free memory was 59.3 MB in the beginning and 57.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,512 INFO L168 Benchmark]: RCFGBuilder took 1179.17 ms. Allocated memory is still 79.7 MB. Free memory was 57.0 MB in the beginning and 49.9 MB in the end (delta: 7.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,513 INFO L168 Benchmark]: TraceAbstraction took 164076.03 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 49.6 MB in the beginning and 67.4 MB in the end (delta: -17.8 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,513 INFO L168 Benchmark]: Witness Printer took 102.13 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 61.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 08:15:24,519 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 41.6 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 414.13 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 38.6 MB in the beginning and 61.5 MB in the end (delta: -23.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.34 ms. Allocated memory is still 79.7 MB. Free memory was 61.5 MB in the beginning and 59.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.18 ms. Allocated memory is still 79.7 MB. Free memory was 59.3 MB in the beginning and 57.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1179.17 ms. Allocated memory is still 79.7 MB. Free memory was 57.0 MB in the beginning and 49.9 MB in the end (delta: 7.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 164076.03 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 49.6 MB in the beginning and 67.4 MB in the end (delta: -17.8 MB). Peak memory consumption was 46.9 MB. Max. memory is 16.1 GB. * Witness Printer took 102.13 ms. Allocated memory is still 96.5 MB. Free memory was 66.4 MB in the beginning and 61.2 MB in the end (delta: 5.2 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: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 31]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 31]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 40]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 40]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 41]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 41]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 42]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 42]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 82]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 52]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 52]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 56]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 56]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 56]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 56]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 56]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 56]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 56]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 58]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 58]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 60]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 60]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 62]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 62]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 62]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 65]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 96]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 104]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 104]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 104]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 104]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 105]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 105]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 105]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 106]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 106]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 106]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 109]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 73]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 73]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 74]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 190 locations, 67 error locations. Started 1 CEGAR loops. OverallTime: 164013.8ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 19.4ms, AutomataDifference: 90673.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1320 SDtfs, 712 SDslu, 3388 SDs, 0 SdLazy, 1078 SolverSat, 113 SolverUnsat, 42 SolverUnknown, 0 SolverNotchecked, 89081.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 294 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 50144.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=6, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 160.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 193 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 101.2ms SsaConstructionTime, 468.0ms SatisfiabilityAnalysisTime, 51318.9ms InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 294 ConstructedInterpolants, 56 QuantifiedInterpolants, 2472 SizeOfPredicates, 20 NumberOfNonLiveVariables, 802 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 132/168 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 67 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 08:15:24,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_65a2867d-a03b-45a5-bd56-5d620ccc826b/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...