./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:00:29,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:00:29,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:00:29,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:00:29,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:00:29,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:00:29,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:00:29,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:00:29,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:00:29,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:00:29,925 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:00:29,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:00:29,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:00:29,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:00:29,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:00:29,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:00:29,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:00:29,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:00:29,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:00:29,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:00:29,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:00:29,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:00:29,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:00:29,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:00:29,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:00:29,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:00:29,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:00:29,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:00:29,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:00:29,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:00:29,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:00:29,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:00:29,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:00:29,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:00:29,965 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:00:29,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:00:29,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:00:29,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:00:29,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:00:29,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:00:29,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:00:29,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:00:29,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:00:30,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:00:30,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:00:30,001 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:00:30,001 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:00:30,001 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:00:30,002 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:00:30,002 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:00:30,002 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:00:30,003 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:00:30,003 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:00:30,003 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:00:30,004 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:00:30,004 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:00:30,004 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:00:30,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:00:30,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:00:30,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:00:30,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:00:30,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:00:30,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:00:30,007 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:00:30,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:00:30,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:00:30,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:00:30,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:00:30,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:00:30,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:30,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:00:30,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:00:30,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:00:30,010 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:00:30,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:00:30,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:00:30,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:00:30,011 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:00:30,011 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_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-07 02:00:30,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:00:30,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:00:30,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:00:30,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:00:30,374 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:00:30,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-07 02:00:30,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/f608375e8/f8d2776ac502461b8077618821be4936/FLAG35dbe3fb5 [2021-11-07 02:00:31,237 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:00:31,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-07 02:00:31,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/f608375e8/f8d2776ac502461b8077618821be4936/FLAG35dbe3fb5 [2021-11-07 02:00:31,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/f608375e8/f8d2776ac502461b8077618821be4936 [2021-11-07 02:00:31,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:00:31,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:00:31,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:31,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:00:31,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:00:31,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:31" (1/1) ... [2021-11-07 02:00:31,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63dd0afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:31, skipping insertion in model container [2021-11-07 02:00:31,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:31" (1/1) ... [2021-11-07 02:00:31,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:00:31,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:00:32,144 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_796c51c3-42d0-4009-ae00-c0822c626c28/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-07 02:00:32,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:32,220 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) [2021-11-07 02:00:32,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ccf4e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:32, skipping insertion in model container [2021-11-07 02:00:32,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:32,222 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:00:32,225 INFO L168 Benchmark]: Toolchain (without parser) took 878.04 ms. Allocated memory is still 98.6 MB. Free memory was 76.8 MB in the beginning and 66.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:32,227 INFO L168 Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.8 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:00:32,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.17 ms. Allocated memory is still 98.6 MB. Free memory was 76.5 MB in the beginning and 66.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:32,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 60.8 MB in the end (delta: 33.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 875.17 ms. Allocated memory is still 98.6 MB. Free memory was 76.5 MB in the beginning and 66.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:00:34,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:00:34,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:00:35,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:00:35,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:00:35,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:00:35,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:00:35,040 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:00:35,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:00:35,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:00:35,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:00:35,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:00:35,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:00:35,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:00:35,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:00:35,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:00:35,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:00:35,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:00:35,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:00:35,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:00:35,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:00:35,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:00:35,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:00:35,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:00:35,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:00:35,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:00:35,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:00:35,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:00:35,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:00:35,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:00:35,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:00:35,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:00:35,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:00:35,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:00:35,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:00:35,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:00:35,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:00:35,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:00:35,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:00:35,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:00:35,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:00:35,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:00:35,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:00:35,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:00:35,142 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:00:35,142 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:00:35,143 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:00:35,143 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:00:35,143 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:00:35,143 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:00:35,143 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:00:35,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:00:35,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:00:35,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:00:35,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:00:35,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:00:35,145 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:00:35,145 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:00:35,146 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:00:35,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:00:35,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:00:35,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:00:35,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:00:35,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:00:35,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:00:35,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:35,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:00:35,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:00:35,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:00:35,151 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:00:35,151 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:35,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:00:35,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:00:35,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:00:35,152 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_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2021-11-07 02:00:35,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:00:35,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:00:35,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:00:35,635 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:00:35,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:00:35,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-07 02:00:35,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/a8d834580/636fe6a7f4534c2bbab9075b5f0e5b1c/FLAG3919cabdf [2021-11-07 02:00:36,566 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:00:36,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-11-07 02:00:36,600 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/a8d834580/636fe6a7f4534c2bbab9075b5f0e5b1c/FLAG3919cabdf [2021-11-07 02:00:36,702 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/data/a8d834580/636fe6a7f4534c2bbab9075b5f0e5b1c [2021-11-07 02:00:36,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:00:36,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:00:36,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:36,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:00:36,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:00:36,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:36" (1/1) ... [2021-11-07 02:00:36,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a06f99f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:36, skipping insertion in model container [2021-11-07 02:00:36,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:00:36" (1/1) ... [2021-11-07 02:00:36,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:00:36,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:00:37,469 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_796c51c3-42d0-4009-ae00-c0822c626c28/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-07 02:00:37,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:37,570 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:00:37,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:00:37,695 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_796c51c3-42d0-4009-ae00-c0822c626c28/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-07 02:00:37,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:37,769 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:00:37,828 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_796c51c3-42d0-4009-ae00-c0822c626c28/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-11-07 02:00:37,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:00:38,026 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:00:38,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38 WrapperNode [2021-11-07 02:00:38,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:00:38,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:00:38,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:00:38,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:00:38,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:00:38,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:00:38,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:00:38,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:00:38,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:00:38,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:00:38,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:00:38,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:00:38,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (1/1) ... [2021-11-07 02:00:38,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:00:38,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:38,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:00:38,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:00:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 02:00:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:00:38,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:00:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:00:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 02:00:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:00:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:00:38,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:00:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:00:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:00:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 02:00:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:00:38,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:00:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:00:39,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:00:39,691 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-11-07 02:00:39,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:39 BoogieIcfgContainer [2021-11-07 02:00:39,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:00:39,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:00:39,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:00:39,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:00:39,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:00:36" (1/3) ... [2021-11-07 02:00:39,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55de2939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:39, skipping insertion in model container [2021-11-07 02:00:39,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:00:38" (2/3) ... [2021-11-07 02:00:39,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55de2939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:00:39, skipping insertion in model container [2021-11-07 02:00:39,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:39" (3/3) ... [2021-11-07 02:00:39,702 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-11-07 02:00:39,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:00:39,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:00:39,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:00:39,769 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-07 02:00:39,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:00:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 76 states have internal predecessors, (122), 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) [2021-11-07 02:00:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:00:39,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:39,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:39,793 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1383985347, now seen corresponding path program 1 times [2021-11-07 02:00:39,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:39,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615440833] [2021-11-07 02:00:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:39,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:39,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:39,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:39,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:00:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:40,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:00:40,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:40,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:40,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:40,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615440833] [2021-11-07 02:00:40,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615440833] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:40,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:40,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:00:40,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229407836] [2021-11-07 02:00:40,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:00:40,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:00:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:00:40,310 INFO L87 Difference]: Start difference. First operand has 77 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 76 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:40,336 INFO L93 Difference]: Finished difference Result 150 states and 238 transitions. [2021-11-07 02:00:40,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:00:40,338 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 02:00:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:40,347 INFO L225 Difference]: With dead ends: 150 [2021-11-07 02:00:40,347 INFO L226 Difference]: Without dead ends: 26 [2021-11-07 02:00:40,351 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:00:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-07 02:00:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-07 02:00:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-11-07 02:00:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-11-07 02:00:40,386 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2021-11-07 02:00:40,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:40,387 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-11-07 02:00:40,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:40,388 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-11-07 02:00:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 02:00:40,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:40,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:40,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:40,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:40,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:40,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -502200470, now seen corresponding path program 1 times [2021-11-07 02:00:40,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:40,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467281433] [2021-11-07 02:00:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:40,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:40,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:40,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:40,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:00:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:40,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:00:40,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:41,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:41,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:41,138 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:41,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467281433] [2021-11-07 02:00:41,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467281433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:41,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:41,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:00:41,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092695772] [2021-11-07 02:00:41,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:41,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:41,148 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:41,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:41,203 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2021-11-07 02:00:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 02:00:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:41,210 INFO L225 Difference]: With dead ends: 51 [2021-11-07 02:00:41,210 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 02:00:41,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 02:00:41,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-07 02:00:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-11-07 02:00:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-07 02:00:41,227 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2021-11-07 02:00:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:41,228 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-07 02:00:41,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-07 02:00:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 02:00:41,230 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:41,231 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:41,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:41,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:41,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:41,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 325484390, now seen corresponding path program 1 times [2021-11-07 02:00:41,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:41,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354997506] [2021-11-07 02:00:41,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:41,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:41,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:41,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:00:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:41,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:41,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:41,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:41,997 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:41,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354997506] [2021-11-07 02:00:41,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354997506] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:41,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1629220300] [2021-11-07 02:00:41,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:41,998 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:41,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:42,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:42,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:00:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:42,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:00:42,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:42,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1629220300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:42,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:00:42,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 02:00:42,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730253880] [2021-11-07 02:00:42,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:00:42,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:42,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:00:42,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:00:42,485 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:42,508 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-11-07 02:00:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:00:42,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 02:00:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:42,513 INFO L225 Difference]: With dead ends: 38 [2021-11-07 02:00:42,514 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 02:00:42,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:00:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 02:00:42,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-07 02:00:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-07 02:00:42,524 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-11-07 02:00:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:42,527 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-07 02:00:42,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:42,529 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-07 02:00:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 02:00:42,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:42,531 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:42,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:42,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:42,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:42,944 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:42,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1270235960, now seen corresponding path program 1 times [2021-11-07 02:00:42,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:42,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045783962] [2021-11-07 02:00:42,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:42,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:42,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:42,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:42,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:00:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:43,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:43,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:43,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:43,543 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:43,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045783962] [2021-11-07 02:00:43,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045783962] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:43,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2058985611] [2021-11-07 02:00:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:43,544 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:43,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:43,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:43,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 02:00:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:43,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 02:00:43,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:43,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:44,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2058985611] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:44,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:00:44,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-07 02:00:44,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348670986] [2021-11-07 02:00:44,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:44,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:44,076 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:44,097 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-11-07 02:00:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 02:00:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:44,100 INFO L225 Difference]: With dead ends: 38 [2021-11-07 02:00:44,100 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 02:00:44,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 02:00:44,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-07 02:00:44,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-11-07 02:00:44,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-07 02:00:44,105 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2021-11-07 02:00:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:44,105 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-07 02:00:44,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:44,106 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-07 02:00:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 02:00:44,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:44,111 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:44,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:44,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-07 02:00:44,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:44,514 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:44,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1663262970, now seen corresponding path program 1 times [2021-11-07 02:00:44,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:44,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957745860] [2021-11-07 02:00:44,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:44,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:44,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:44,521 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:44,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:00:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:44,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:44,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:44,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:45,083 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:45,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957745860] [2021-11-07 02:00:45,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957745860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:45,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1416677326] [2021-11-07 02:00:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:45,084 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:45,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:45,087 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:45,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 02:00:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:45,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:45,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:45,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:45,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1416677326] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:45,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884553313] [2021-11-07 02:00:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:45,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:45,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:45,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:00:45,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 02:00:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:46,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:00:46,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:46,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:46,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884553313] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:46,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:00:46,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5, 5, 5, 5] total 14 [2021-11-07 02:00:46,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444213909] [2021-11-07 02:00:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:00:46,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:46,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:00:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:00:46,566 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:46,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:46,907 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-11-07 02:00:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:00:46,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 02:00:46,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:46,911 INFO L225 Difference]: With dead ends: 46 [2021-11-07 02:00:46,911 INFO L226 Difference]: Without dead ends: 32 [2021-11-07 02:00:46,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-07 02:00:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-07 02:00:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-11-07 02:00:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-11-07 02:00:46,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2021-11-07 02:00:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:46,918 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-11-07 02:00:46,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-11-07 02:00:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 02:00:46,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:46,920 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:46,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:47,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:00:47,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-07 02:00:47,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:47,532 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1293773121, now seen corresponding path program 1 times [2021-11-07 02:00:47,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:47,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160494299] [2021-11-07 02:00:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:47,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:47,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:47,534 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:47,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:00:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:47,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:47,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:48,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:48,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:48,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160494299] [2021-11-07 02:00:48,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160494299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:48,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1705754422] [2021-11-07 02:00:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:48,202 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:48,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:48,206 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-07 02:00:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:48,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:48,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:49,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 02:00:49,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1705754422] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:49,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522250888] [2021-11-07 02:00:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:49,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:49,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:49,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:00:49,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 02:00:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:49,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 02:00:49,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:49,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 02:00:49,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522250888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:49,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 02:00:49,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 02:00:49,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294685049] [2021-11-07 02:00:49,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:49,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:49,684 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-07 02:00:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:49,750 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2021-11-07 02:00:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:00:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 02:00:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:49,752 INFO L225 Difference]: With dead ends: 50 [2021-11-07 02:00:49,752 INFO L226 Difference]: Without dead ends: 32 [2021-11-07 02:00:49,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-07 02:00:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-07 02:00:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-07 02:00:49,756 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2021-11-07 02:00:49,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:49,757 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-07 02:00:49,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-07 02:00:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-07 02:00:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 02:00:49,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:49,758 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:49,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:49,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:50,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:50,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:50,363 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash -737324797, now seen corresponding path program 1 times [2021-11-07 02:00:50,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:50,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665773723] [2021-11-07 02:00:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:50,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:50,366 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:50,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:00:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:50,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:50,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:50,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:51,013 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:51,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665773723] [2021-11-07 02:00:51,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665773723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:51,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [304294176] [2021-11-07 02:00:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:51,014 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:00:51,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:00:51,015 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:00:51,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 02:00:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:51,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:51,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:51,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:51,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [304294176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:51,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567152253] [2021-11-07 02:00:51,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:00:51,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:00:51,836 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:00:51,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 02:00:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:00:52,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:00:52,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:52,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 02:00:52,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567152253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:00:52,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 02:00:52,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-07 02:00:52,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800144101] [2021-11-07 02:00:52,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:00:52,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:00:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:00:52,424 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:52,566 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2021-11-07 02:00:52,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:00:52,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 02:00:52,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:52,574 INFO L225 Difference]: With dead ends: 65 [2021-11-07 02:00:52,574 INFO L226 Difference]: Without dead ends: 40 [2021-11-07 02:00:52,574 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:00:52,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-07 02:00:52,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-07 02:00:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-11-07 02:00:52,580 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 31 [2021-11-07 02:00:52,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:52,580 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-11-07 02:00:52,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:52,581 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-11-07 02:00:52,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-07 02:00:52,582 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:00:52,582 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:52,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:52,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:53,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:53,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:00:53,202 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:00:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:00:53,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1549750533, now seen corresponding path program 2 times [2021-11-07 02:00:53,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:00:53,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607882241] [2021-11-07 02:00:53,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 02:00:53,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:00:53,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:00:53,204 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:00:53,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 02:00:53,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 02:00:53,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 02:00:53,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:00:53,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:53,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:00:53,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-07 02:00:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 02:00:54,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:55,411 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 02:00:55,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:00:55,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607882241] [2021-11-07 02:00:55,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607882241] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:00:55,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:00:55,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 02:00:55,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490729219] [2021-11-07 02:00:55,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:00:55,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:00:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:00:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:55,414 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:00:55,417 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-11-07 02:00:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:00:55,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-07 02:00:55,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:00:55,418 INFO L225 Difference]: With dead ends: 40 [2021-11-07 02:00:55,418 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:00:55,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:00:55,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:00:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:00:55,420 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) [2021-11-07 02:00:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:00:55,420 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-11-07 02:00:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:00:55,421 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:00:55,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:00:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:00:55,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:00:55,424 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:00:55,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 02:00:55,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:00:55,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 02:00:55,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:00:55,943 INFO L857 garLoopResultBuilder]: For program point L1505(line 1505) no Hoare annotation was computed. [2021-11-07 02:00:55,944 INFO L860 garLoopResultBuilder]: At program point L1439(lines 1421 1440) the Hoare annotation is: true [2021-11-07 02:00:55,944 INFO L857 garLoopResultBuilder]: For program point L1505-2(line 1505) no Hoare annotation was computed. [2021-11-07 02:00:55,944 INFO L860 garLoopResultBuilder]: At program point L1456(lines 1441 1457) the Hoare annotation is: true [2021-11-07 02:00:55,944 INFO L857 garLoopResultBuilder]: For program point L1357(lines 1357 1377) no Hoare annotation was computed. [2021-11-07 02:00:55,944 INFO L857 garLoopResultBuilder]: For program point L1357-1(lines 1357 1377) no Hoare annotation was computed. [2021-11-07 02:00:55,944 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 02:00:55,945 INFO L857 garLoopResultBuilder]: For program point L1606-2(lines 1606 1613) no Hoare annotation was computed. [2021-11-07 02:00:55,945 INFO L853 garLoopResultBuilder]: At program point L1606-3(lines 1606 1613) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (not (= (_ bv0 64) |#t~string44.base|)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-07 02:00:55,945 INFO L857 garLoopResultBuilder]: For program point L1606-4(lines 1606 1613) no Hoare annotation was computed. [2021-11-07 02:00:55,945 INFO L860 garLoopResultBuilder]: At program point L1590(lines 1586 1591) the Hoare annotation is: true [2021-11-07 02:00:55,945 INFO L857 garLoopResultBuilder]: For program point L1491(lines 1491 1492) no Hoare annotation was computed. [2021-11-07 02:00:55,945 INFO L857 garLoopResultBuilder]: For program point L1359(lines 1359 1376) no Hoare annotation was computed. [2021-11-07 02:00:55,945 INFO L857 garLoopResultBuilder]: For program point L1343(line 1343) no Hoare annotation was computed. [2021-11-07 02:00:55,945 INFO L857 garLoopResultBuilder]: For program point L1343-2(line 1343) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L857 garLoopResultBuilder]: For program point L1410(lines 1410 1411) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L857 garLoopResultBuilder]: For program point L1427(lines 1427 1436) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L857 garLoopResultBuilder]: For program point L1427-2(lines 1422 1440) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L860 garLoopResultBuilder]: At program point L1510(lines 1497 1511) the Hoare annotation is: true [2021-11-07 02:00:55,946 INFO L857 garLoopResultBuilder]: For program point L1362(lines 1362 1375) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-11-07 02:00:55,946 INFO L860 garLoopResultBuilder]: At program point L1478(lines 1462 1479) the Hoare annotation is: true [2021-11-07 02:00:55,947 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 02:00:55,947 INFO L860 garLoopResultBuilder]: At program point L1495(lines 1480 1496) the Hoare annotation is: true [2021-11-07 02:00:55,947 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-07 02:00:55,947 INFO L857 garLoopResultBuilder]: For program point L1611-2(lines 1611 1612) no Hoare annotation was computed. [2021-11-07 02:00:55,947 INFO L853 garLoopResultBuilder]: At program point L1611-3(lines 1611 1612) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge ULTIMATE.start_main_~argc~0 (_ bv1 32)) (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (bvslt ULTIMATE.start_main_~i~4 ULTIMATE.start_main_~argc~0) (not (= (_ bv0 64) |#t~string44.base|)) (bvsle ULTIMATE.start_main_~argc~0 (_ bv10000 32)) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-07 02:00:55,947 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-11-07 02:00:55,947 INFO L857 garLoopResultBuilder]: For program point L1446(lines 1446 1453) no Hoare annotation was computed. [2021-11-07 02:00:55,947 INFO L857 garLoopResultBuilder]: For program point L1446-1(lines 1446 1453) no Hoare annotation was computed. [2021-11-07 02:00:55,948 INFO L860 garLoopResultBuilder]: At program point L1347(lines 1338 1350) the Hoare annotation is: true [2021-11-07 02:00:55,948 INFO L857 garLoopResultBuilder]: For program point L1364(lines 1364 1374) no Hoare annotation was computed. [2021-11-07 02:00:55,948 INFO L857 garLoopResultBuilder]: For program point L1447-1(lines 1447 1453) no Hoare annotation was computed. [2021-11-07 02:00:55,948 INFO L857 garLoopResultBuilder]: For program point L1447-3(lines 1447 1453) no Hoare annotation was computed. [2021-11-07 02:00:55,948 INFO L860 garLoopResultBuilder]: At program point L1447-4(lines 1447 1453) the Hoare annotation is: true [2021-11-07 02:00:55,948 INFO L857 garLoopResultBuilder]: For program point L1596-2(lines 1596 1597) no Hoare annotation was computed. [2021-11-07 02:00:55,948 INFO L853 garLoopResultBuilder]: At program point L1596-3(lines 1596 1597) the Hoare annotation is: (and (not (= |#t~string45.base| |#t~string44.base|)) (= (_ bv0 64) |#t~string45.offset|) (not (= (_ bv0 64) |#t~string44.base|)) (not (= (_ bv0 64) |#t~string45.base|)) (= (_ bv0 64) |#t~string44.offset|)) [2021-11-07 02:00:55,948 INFO L857 garLoopResultBuilder]: For program point L1596-4(lines 1596 1597) no Hoare annotation was computed. [2021-11-07 02:00:55,949 INFO L857 garLoopResultBuilder]: For program point L1431(lines 1431 1434) no Hoare annotation was computed. [2021-11-07 02:00:55,950 INFO L857 garLoopResultBuilder]: For program point L1431-2(lines 1430 1436) no Hoare annotation was computed. [2021-11-07 02:00:55,950 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 02:00:55,950 INFO L857 garLoopResultBuilder]: For program point L1432(line 1432) no Hoare annotation was computed. [2021-11-07 02:00:55,950 INFO L857 garLoopResultBuilder]: For program point L1432-2(line 1432) no Hoare annotation was computed. [2021-11-07 02:00:55,950 INFO L857 garLoopResultBuilder]: For program point L1482(lines 1482 1494) no Hoare annotation was computed. [2021-11-07 02:00:55,951 INFO L857 garLoopResultBuilder]: For program point L1482-1(lines 1482 1494) no Hoare annotation was computed. [2021-11-07 02:00:55,951 INFO L857 garLoopResultBuilder]: For program point L1449(lines 1449 1450) no Hoare annotation was computed. [2021-11-07 02:00:55,951 INFO L857 garLoopResultBuilder]: For program point L1400(lines 1400 1413) no Hoare annotation was computed. [2021-11-07 02:00:55,951 INFO L857 garLoopResultBuilder]: For program point L1466-2(lines 1466 1477) no Hoare annotation was computed. [2021-11-07 02:00:55,951 INFO L857 garLoopResultBuilder]: For program point L1367(lines 1367 1373) no Hoare annotation was computed. [2021-11-07 02:00:55,951 INFO L857 garLoopResultBuilder]: For program point L1400-1(lines 1400 1413) no Hoare annotation was computed. [2021-11-07 02:00:55,952 INFO L860 garLoopResultBuilder]: At program point L1466-3(lines 1466 1477) the Hoare annotation is: true [2021-11-07 02:00:55,952 INFO L857 garLoopResultBuilder]: For program point L1334(lines 1334 1392) no Hoare annotation was computed. [2021-11-07 02:00:55,952 INFO L857 garLoopResultBuilder]: For program point L1466-4(lines 1466 1477) no Hoare annotation was computed. [2021-11-07 02:00:55,952 INFO L857 garLoopResultBuilder]: For program point L1334-1(lines 1325 1420) no Hoare annotation was computed. [2021-11-07 02:00:55,952 INFO L857 garLoopResultBuilder]: For program point L1615-2(lines 1615 1616) no Hoare annotation was computed. [2021-11-07 02:00:55,952 INFO L860 garLoopResultBuilder]: At program point L1615-3(lines 1615 1616) the Hoare annotation is: true [2021-11-07 02:00:55,953 INFO L857 garLoopResultBuilder]: For program point L1615-4(lines 1615 1616) no Hoare annotation was computed. [2021-11-07 02:00:55,953 INFO L857 garLoopResultBuilder]: For program point L1351-1(lines 1351 1385) no Hoare annotation was computed. [2021-11-07 02:00:55,953 INFO L857 garLoopResultBuilder]: For program point L1484(lines 1484 1493) no Hoare annotation was computed. [2021-11-07 02:00:55,953 INFO L857 garLoopResultBuilder]: For program point L1501-1(lines 1501 1509) no Hoare annotation was computed. [2021-11-07 02:00:55,953 INFO L857 garLoopResultBuilder]: For program point L1435-1(line 1435) no Hoare annotation was computed. [2021-11-07 02:00:55,954 INFO L860 garLoopResultBuilder]: At program point L1501-3(lines 1501 1509) the Hoare annotation is: true [2021-11-07 02:00:55,954 INFO L857 garLoopResultBuilder]: For program point L1369(lines 1369 1372) no Hoare annotation was computed. [2021-11-07 02:00:55,954 INFO L857 garLoopResultBuilder]: For program point L1501-4(lines 1501 1509) no Hoare annotation was computed. [2021-11-07 02:00:55,954 INFO L860 garLoopResultBuilder]: At program point L1419(lines 1324 1420) the Hoare annotation is: true [2021-11-07 02:00:55,954 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 02:00:55,954 INFO L857 garLoopResultBuilder]: For program point L1469(lines 1469 1474) no Hoare annotation was computed. [2021-11-07 02:00:55,955 INFO L857 garLoopResultBuilder]: For program point L1403(lines 1403 1412) no Hoare annotation was computed. [2021-11-07 02:00:55,955 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1371) no Hoare annotation was computed. [2021-11-07 02:00:55,955 INFO L857 garLoopResultBuilder]: For program point L1387(lines 1387 1391) no Hoare annotation was computed. [2021-11-07 02:00:55,955 INFO L857 garLoopResultBuilder]: For program point L1371(line 1371) no Hoare annotation was computed. [2021-11-07 02:00:55,955 INFO L857 garLoopResultBuilder]: For program point L1338(lines 1338 1350) no Hoare annotation was computed. [2021-11-07 02:00:55,956 INFO L857 garLoopResultBuilder]: For program point L1338-2(lines 1335 1392) no Hoare annotation was computed. [2021-11-07 02:00:55,956 INFO L857 garLoopResultBuilder]: For program point L1504(lines 1504 1507) no Hoare annotation was computed. [2021-11-07 02:00:55,956 INFO L857 garLoopResultBuilder]: For program point L1471(lines 1471 1472) no Hoare annotation was computed. [2021-11-07 02:00:55,956 INFO L860 garLoopResultBuilder]: At program point L1620(lines 1592 1621) the Hoare annotation is: true [2021-11-07 02:00:55,960 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-11-07 02:00:55,961 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:00:55,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:00:55 BoogieIcfgContainer [2021-11-07 02:00:55,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:00:55,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:00:55,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:00:55,994 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:00:55,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:00:39" (3/4) ... [2021-11-07 02:00:55,997 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:00:56,014 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2021-11-07 02:00:56,015 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-07 02:00:56,016 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-07 02:00:56,017 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:00:56,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:00:56,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:00:56,095 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:00:56,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:00:56,097 INFO L168 Benchmark]: Toolchain (without parser) took 19389.15 ms. Allocated memory was 56.6 MB in the beginning and 102.8 MB in the end (delta: 46.1 MB). Free memory was 31.7 MB in the beginning and 71.2 MB in the end (delta: -39.5 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,098 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 37.6 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:00:56,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1313.19 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 31.1 MB in the end (delta: 375.1 kB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.92 ms. Allocated memory is still 69.2 MB. Free memory was 30.8 MB in the beginning and 42.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,099 INFO L168 Benchmark]: Boogie Preprocessor took 117.25 ms. Allocated memory is still 69.2 MB. Free memory was 42.7 MB in the beginning and 38.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,099 INFO L168 Benchmark]: RCFGBuilder took 1386.17 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 53.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,100 INFO L168 Benchmark]: TraceAbstraction took 16297.62 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 34.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,100 INFO L168 Benchmark]: Witness Printer took 102.53 ms. Allocated memory is still 102.8 MB. Free memory was 34.0 MB in the beginning and 71.2 MB in the end (delta: -37.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:00:56,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 37.6 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1313.19 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.5 MB in the beginning and 31.1 MB in the end (delta: 375.1 kB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 159.92 ms. Allocated memory is still 69.2 MB. Free memory was 30.8 MB in the beginning and 42.7 MB in the end (delta: -11.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 117.25 ms. Allocated memory is still 69.2 MB. Free memory was 42.7 MB in the beginning and 38.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1386.17 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 37.9 MB in the beginning and 53.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16297.62 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 34.0 MB in the end (delta: 18.9 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 102.53 ms. Allocated memory is still 102.8 MB. Free memory was 34.0 MB in the beginning and 71.2 MB in the end (delta: -37.2 MB). Peak memory consumption was 9.7 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1371]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 282 SDtfs, 85 SDslu, 279 SDs, 0 SdLazy, 78 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 807 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=0, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 16 PreInvPairs, 40 NumberOfFragments, 91 HoareAnnotationTreeSize, 16 FomulaSimplifications, 178 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 16 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 417 NumberOfCodeBlocks, 398 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 1878 SizeOfPredicates, 21 NumberOfNonLiveVariables, 2584 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 150/222 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 1 specifications checked. All of them hold - InvariantResult [Line: 1501]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1611]: Loop Invariant Derived loop invariant: (((((((cond == 1bv32 && ~bvsge64(argc, 1bv32)) && !("--" == "--")) && 0bv64 == "--") && ~bvslt64(i, argc)) && !(0bv64 == "--")) && ~bvsle32(argc, 10000bv32)) && !(0bv64 == "--")) && 0bv64 == "--" - InvariantResult [Line: 1462]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1615]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1596]: Loop Invariant Derived loop invariant: (((!("--" == "--") && 0bv64 == "--") && !(0bv64 == "--")) && !(0bv64 == "--")) && 0bv64 == "--" - InvariantResult [Line: 1592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1586]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1606]: Loop Invariant Derived loop invariant: ((((((cond == 1bv32 && ~bvsge64(argc, 1bv32)) && !("--" == "--")) && 0bv64 == "--") && !(0bv64 == "--")) && ~bvsle32(argc, 10000bv32)) && !(0bv64 == "--")) && 0bv64 == "--" - InvariantResult [Line: 1421]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1447]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1324]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1466]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1441]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1480]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1338]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1497]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 02:00:56,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_796c51c3-42d0-4009-ae00-c0822c626c28/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE