./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce82bd2068c431a8a58717550c5ca3a1f22bb267 ........................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ce82bd2068c431a8a58717550c5ca3a1f22bb267 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:59:45,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:59:45,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:59:45,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:59:45,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:59:45,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:59:45,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:59:45,301 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:59:45,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:59:45,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:59:45,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:59:45,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:59:45,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:59:45,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:59:45,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:59:45,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:59:45,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:59:45,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:59:45,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:59:45,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:59:45,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:59:45,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:59:45,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:59:45,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:59:45,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:59:45,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:59:45,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:59:45,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:59:45,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:59:45,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:59:45,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:59:45,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:59:45,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:59:45,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:59:45,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:59:45,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:59:45,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:59:45,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:59:45,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:59:45,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:59:45,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:59:45,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2021-10-13 06:59:45,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:59:45,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:59:45,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:59:45,404 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:59:45,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:59:45,405 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:59:45,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:59:45,405 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:59:45,405 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:59:45,405 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:59:45,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:59:45,406 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:59:45,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:59:45,406 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:59:45,406 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:59:45,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 06:59:45,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 06:59:45,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:59:45,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 06:59:45,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:59:45,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:59:45,408 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 06:59:45,408 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 06:59:45,409 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 06:59:45,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:59:45,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:59:45,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:59:45,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:59:45,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:59:45,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:45,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:59:45,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:59:45,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:59:45,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:59:45,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:59:45,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:59:45,411 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_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce82bd2068c431a8a58717550c5ca3a1f22bb267 [2021-10-13 06:59:45,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:59:45,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:59:45,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:59:45,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:59:45,688 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:59:45,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-13 06:59:45,766 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/86a9e7f36/0fb2bd6342b144d8b06f3433e0edfbff/FLAG61948ba34 [2021-10-13 06:59:46,377 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:59:46,377 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-13 06:59:46,408 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/86a9e7f36/0fb2bd6342b144d8b06f3433e0edfbff/FLAG61948ba34 [2021-10-13 06:59:46,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/86a9e7f36/0fb2bd6342b144d8b06f3433e0edfbff [2021-10-13 06:59:46,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:59:46,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:59:46,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:46,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:59:46,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:59:46,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:46" (1/1) ... [2021-10-13 06:59:46,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e588324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:46, skipping insertion in model container [2021-10-13 06:59:46,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:46" (1/1) ... [2021-10-13 06:59:46,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:59:46,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:59:47,339 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_5eaba3cb-83d3-417a-b46c-7ea965d95e63/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-13 06:59:47,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:47,425 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-13 06:59:47,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@117c26ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:47, skipping insertion in model container [2021-10-13 06:59:47,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:47,426 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 06:59:47,429 INFO L168 Benchmark]: Toolchain (without parser) took 789.78 ms. Allocated memory is still 132.1 MB. Free memory was 93.5 MB in the beginning and 93.8 MB in the end (delta: -326.2 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:47,431 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:59:47,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 785.08 ms. Allocated memory is still 132.1 MB. Free memory was 93.1 MB in the beginning and 93.8 MB in the end (delta: -745.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:59:47,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory was 44.6 MB in the beginning and 44.6 MB in the end (delta: 53.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 785.08 ms. Allocated memory is still 132.1 MB. Free memory was 93.1 MB in the beginning and 93.8 MB in the end (delta: -745.6 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:59:49,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:59:49,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:59:49,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:59:49,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:59:49,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:59:49,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:59:49,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:59:49,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:59:49,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:59:49,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:59:49,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:59:49,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:59:49,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:59:49,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:59:49,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:59:49,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:59:49,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:59:49,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:59:49,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:59:49,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:59:49,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:59:49,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:59:49,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:59:50,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:59:50,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:59:50,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:59:50,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:59:50,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:59:50,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:59:50,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:59:50,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:59:50,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:59:50,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:59:50,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:59:50,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:59:50,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:59:50,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:59:50,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:59:50,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:59:50,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:59:50,029 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2021-10-13 06:59:50,077 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:59:50,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:59:50,079 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:59:50,079 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:59:50,079 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:59:50,080 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:59:50,080 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:59:50,080 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:59:50,080 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:59:50,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 06:59:50,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 06:59:50,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:59:50,084 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 06:59:50,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:59:50,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:59:50,085 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 06:59:50,085 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 06:59:50,085 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 06:59:50,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:59:50,086 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:59:50,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 06:59:50,086 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 06:59:50,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:59:50,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:59:50,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 06:59:50,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:59:50,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:50,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:59:50,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:59:50,088 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 06:59:50,089 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 06:59:50,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:59:50,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:59:50,090 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_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce82bd2068c431a8a58717550c5ca3a1f22bb267 [2021-10-13 06:59:50,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:59:50,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:59:50,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:59:50,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:59:50,518 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:59:50,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-13 06:59:50,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/1a37b4c47/1e830327ac4c427ebf15f2c32cd98bf6/FLAGa13c36d89 [2021-10-13 06:59:51,332 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:59:51,338 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2021-10-13 06:59:51,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/1a37b4c47/1e830327ac4c427ebf15f2c32cd98bf6/FLAGa13c36d89 [2021-10-13 06:59:51,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/data/1a37b4c47/1e830327ac4c427ebf15f2c32cd98bf6 [2021-10-13 06:59:51,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:59:51,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:59:51,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:51,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:59:51,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:59:51,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:51" (1/1) ... [2021-10-13 06:59:51,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6ec306 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:51, skipping insertion in model container [2021-10-13 06:59:51,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:59:51" (1/1) ... [2021-10-13 06:59:51,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:59:51,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:59:52,542 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_5eaba3cb-83d3-417a-b46c-7ea965d95e63/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-13 06:59:52,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:52,610 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 06:59:52,642 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:59:52,735 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_5eaba3cb-83d3-417a-b46c-7ea965d95e63/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-13 06:59:52,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:52,778 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:59:52,853 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_5eaba3cb-83d3-417a-b46c-7ea965d95e63/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2021-10-13 06:59:52,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:59:53,058 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:59:53,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53 WrapperNode [2021-10-13 06:59:53,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:59:53,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:59:53,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:59:53,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:59:53,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:59:53,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:59:53,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:59:53,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:59:53,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:59:53,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:59:53,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:59:53,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:59:53,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (1/1) ... [2021-10-13 06:59:53,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:59:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:59:53,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:59:53,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:59:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-13 06:59:53,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 06:59:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:59:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 06:59:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-13 06:59:53,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 06:59:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 06:59:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 06:59:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-10-13 06:59:53,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 06:59:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-10-13 06:59:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 06:59:53,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:59:53,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:59:55,091 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:59:55,091 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 06:59:55,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:55 BoogieIcfgContainer [2021-10-13 06:59:55,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:59:55,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:59:55,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:59:55,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:59:55,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:59:51" (1/3) ... [2021-10-13 06:59:55,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3736ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:55, skipping insertion in model container [2021-10-13 06:59:55,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:59:53" (2/3) ... [2021-10-13 06:59:55,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a3736ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:59:55, skipping insertion in model container [2021-10-13 06:59:55,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:55" (3/3) ... [2021-10-13 06:59:55,110 INFO L111 eAbstractionObserver]: Analyzing ICFG basename-2.i [2021-10-13 06:59:55,116 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:59:55,117 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-10-13 06:59:55,155 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:59:55,161 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 06:59:55,162 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-10-13 06:59:55,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 241 states, 146 states have (on average 1.9589041095890412) internal successors, (286), 240 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 06:59:55,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:55,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 06:59:55,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-13 06:59:55,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:55,207 INFO L82 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-10-13 06:59:55,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:55,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608981074] [2021-10-13 06:59:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:55,225 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:55,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:55,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:55,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 06:59:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:55,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 06:59:55,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:55,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 06:59:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:55,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:55,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:59:55,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608981074] [2021-10-13 06:59:55,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608981074] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:59:55,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:59:55,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 06:59:55,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342463182] [2021-10-13 06:59:55,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 06:59:55,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:59:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 06:59:55,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:59:55,625 INFO L87 Difference]: Start difference. First operand has 241 states, 146 states have (on average 1.9589041095890412) internal successors, (286), 240 states have internal predecessors, (286), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:59:56,154 INFO L93 Difference]: Finished difference Result 255 states and 290 transitions. [2021-10-13 06:59:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:59:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-10-13 06:59:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:59:56,172 INFO L225 Difference]: With dead ends: 255 [2021-10-13 06:59:56,172 INFO L226 Difference]: Without dead ends: 253 [2021-10-13 06:59:56,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 06:59:56,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-13 06:59:56,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 237. [2021-10-13 06:59:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 145 states have (on average 1.8689655172413793) internal successors, (271), 236 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 271 transitions. [2021-10-13 06:59:56,255 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 271 transitions. Word has length 3 [2021-10-13 06:59:56,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:59:56,255 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 271 transitions. [2021-10-13 06:59:56,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:56,255 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 271 transitions. [2021-10-13 06:59:56,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 06:59:56,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:56,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 06:59:56,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:56,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:56,457 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-13 06:59:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-10-13 06:59:56,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:56,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277177260] [2021-10-13 06:59:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:56,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:56,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:56,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:56,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 06:59:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:56,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 06:59:56,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:56,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 06:59:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:56,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:56,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:59:56,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277177260] [2021-10-13 06:59:56,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277177260] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:59:56,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:59:56,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 06:59:56,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812186731] [2021-10-13 06:59:56,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:59:56,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:59:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:59:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:59:56,855 INFO L87 Difference]: Start difference. First operand 237 states and 271 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:59:57,923 INFO L93 Difference]: Finished difference Result 236 states and 270 transitions. [2021-10-13 06:59:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 06:59:57,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-10-13 06:59:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:59:57,927 INFO L225 Difference]: With dead ends: 236 [2021-10-13 06:59:57,927 INFO L226 Difference]: Without dead ends: 236 [2021-10-13 06:59:57,927 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:59:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-13 06:59:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-10-13 06:59:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 145 states have (on average 1.8620689655172413) internal successors, (270), 235 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 270 transitions. [2021-10-13 06:59:57,940 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 270 transitions. Word has length 3 [2021-10-13 06:59:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:59:57,941 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 270 transitions. [2021-10-13 06:59:57,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:59:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 270 transitions. [2021-10-13 06:59:57,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 06:59:57,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:59:57,942 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 06:59:57,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 06:59:58,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 06:59:58,156 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-13 06:59:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:59:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2021-10-13 06:59:58,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 06:59:58,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759881701] [2021-10-13 06:59:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:59:58,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 06:59:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 06:59:58,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 06:59:58,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 06:59:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:59:58,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 06:59:58,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:59:58,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 06:59:58,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:58,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:59:58,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:59:58,766 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 06:59:58,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759881701] [2021-10-13 06:59:58,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759881701] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 06:59:58,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:59:58,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 06:59:58,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042714831] [2021-10-13 06:59:58,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 06:59:58,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 06:59:58,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 06:59:58,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 06:59:58,770 INFO L87 Difference]: Start difference. First operand 236 states and 270 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:00:00,202 INFO L93 Difference]: Finished difference Result 249 states and 284 transitions. [2021-10-13 07:00:00,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:00:00,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 6 [2021-10-13 07:00:00,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:00:00,206 INFO L225 Difference]: With dead ends: 249 [2021-10-13 07:00:00,206 INFO L226 Difference]: Without dead ends: 249 [2021-10-13 07:00:00,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 173.0ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:00:00,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-10-13 07:00:00,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 242. [2021-10-13 07:00:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 151 states have (on average 1.8344370860927153) internal successors, (277), 241 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 277 transitions. [2021-10-13 07:00:00,222 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 277 transitions. Word has length 6 [2021-10-13 07:00:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:00:00,222 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 277 transitions. [2021-10-13 07:00:00,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 277 transitions. [2021-10-13 07:00:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:00:00,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:00:00,224 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:00:00,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:00:00,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:00:00,434 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-13 07:00:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:00:00,435 INFO L82 PathProgramCache]: Analyzing trace with hash 462405445, now seen corresponding path program 1 times [2021-10-13 07:00:00,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:00:00,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552885462] [2021-10-13 07:00:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:00:00,450 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:00:00,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:00:00,451 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:00:00,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:00:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:00:00,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:00:00,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:00,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:00:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:00,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:00:00,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552885462] [2021-10-13 07:00:00,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552885462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:00:00,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1372106716] [2021-10-13 07:00:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:00:00,830 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:00:00,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:00:00,837 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:00:00,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:00:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:00:01,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:00:01,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:01,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:00:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:01,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1372106716] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:00:01,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987855654] [2021-10-13 07:00:01,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:00:01,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:00:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:00:01,334 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:00:01,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:00:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:00:01,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:00:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:01,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:00:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:01,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987855654] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:00:01,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:00:01,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-13 07:00:01,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967822753] [2021-10-13 07:00:01,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:00:01,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:00:01,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:00:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:00:01,623 INFO L87 Difference]: Start difference. First operand 242 states and 277 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:00:01,708 INFO L93 Difference]: Finished difference Result 250 states and 284 transitions. [2021-10-13 07:00:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:00:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 07:00:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:00:01,717 INFO L225 Difference]: With dead ends: 250 [2021-10-13 07:00:01,718 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 07:00:01,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.2ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:00:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 07:00:01,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-10-13 07:00:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 158 states have (on average 1.7974683544303798) internal successors, (284), 248 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:01,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2021-10-13 07:00:01,750 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 11 [2021-10-13 07:00:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:00:01,751 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2021-10-13 07:00:01,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2021-10-13 07:00:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:00:01,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:00:01,752 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-13 07:00:01,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:00:01,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:00:02,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:00:02,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:00:02,354 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-13 07:00:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:00:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1609221679, now seen corresponding path program 1 times [2021-10-13 07:00:02,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:00:02,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717943629] [2021-10-13 07:00:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:00:02,355 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:00:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:00:02,356 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:00:02,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:00:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:00:02,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:00:02,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:02,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:00:02,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:02,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:00:03,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:03,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:00:03,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717943629] [2021-10-13 07:00:03,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717943629] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:00:03,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2059045049] [2021-10-13 07:00:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:00:03,805 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:00:03,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:00:03,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:00:03,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:00:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:00:04,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:00:04,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:04,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:00:04,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:04,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:00:04,930 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:04,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2059045049] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:00:04,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506564915] [2021-10-13 07:00:04,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:00:04,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:00:04,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:00:04,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:00:04,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:00:05,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:00:05,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:00:05,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:05,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:00:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:05,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:00:05,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:00:05,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506564915] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:00:05,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:00:05,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-13 07:00:05,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414343821] [2021-10-13 07:00:05,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:00:05,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:00:05,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:00:05,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:00:05,827 INFO L87 Difference]: Start difference. First operand 249 states and 284 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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) [2021-10-13 07:00:09,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:00:09,052 INFO L93 Difference]: Finished difference Result 252 states and 286 transitions. [2021-10-13 07:00:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:00:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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 14 [2021-10-13 07:00:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:00:09,055 INFO L225 Difference]: With dead ends: 252 [2021-10-13 07:00:09,056 INFO L226 Difference]: Without dead ends: 252 [2021-10-13 07:00:09,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 776.2ms TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:00:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-13 07:00:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-13 07:00:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 162 states have (on average 1.7654320987654322) internal successors, (286), 251 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:00:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 286 transitions. [2021-10-13 07:00:09,064 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 286 transitions. Word has length 14 [2021-10-13 07:00:09,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:00:09,065 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 286 transitions. [2021-10-13 07:00:09,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 10 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) [2021-10-13 07:00:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 286 transitions. [2021-10-13 07:00:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:00:09,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:00:09,066 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:00:09,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:00:09,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 07:00:09,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-13 07:00:09,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:00:09,674 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 90 more)] === [2021-10-13 07:00:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:00:09,674 INFO L82 PathProgramCache]: Analyzing trace with hash -406298695, now seen corresponding path program 2 times [2021-10-13 07:00:09,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:00:09,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646134405] [2021-10-13 07:00:09,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:00:09,675 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:00:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:00:09,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:00:09,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:00:09,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:00:09,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:00:09,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:00:09,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:00:11,135 INFO L354 Elim1Store]: treesize reduction 1467, result has 7.4 percent of original size [2021-10-13 07:00:11,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 11 case distinctions, treesize of input 969 treesize of output 1020 [2021-10-13 07:00:26,168 INFO L354 Elim1Store]: treesize reduction 535, result has 29.3 percent of original size [2021-10-13 07:00:26,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 182 treesize of output 378 [2021-10-13 07:02:52,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-13 07:02:52,140 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-13 07:02:52,143 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:02:52,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646134405] [2021-10-13 07:02:52,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-13 07:02:52,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1946539524] [2021-10-13 07:02:52,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:02:52,145 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:02:52,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:02:52,146 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:02:52,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-13 07:02:52,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:02:52,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:02:52,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:02:52,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:52,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-13 07:02:52,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62227866] [2021-10-13 07:02:52,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:02:52,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:02:52,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:02:52,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:02:52,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 07:02:53,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 07:02:53,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:02:53,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:02:53,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:02:53,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-13 07:02:53,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:02:53,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:02:53,292 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:02:53,293 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:02:53,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 07:02:53,303 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:02:53,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:02:53,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:02:53,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:02:53,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 07:02:53,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 07:02:53,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 07:02:53,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 07:02:53,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 07:02:53,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 07:02:53,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 07:02:53,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 07:02:53,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 07:02:53,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 07:02:53,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 07:02:53,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 07:02:53,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 07:02:53,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 07:02:53,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 07:02:53,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 07:02:53,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 07:02:53,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-13 07:02:53,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 07:02:53,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATION [2021-10-13 07:02:53,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATION [2021-10-13 07:02:53,310 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATION [2021-10-13 07:02:53,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATION [2021-10-13 07:02:53,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATION [2021-10-13 07:02:53,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATION [2021-10-13 07:02:53,311 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATION [2021-10-13 07:02:53,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATION [2021-10-13 07:02:53,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATION [2021-10-13 07:02:53,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATION [2021-10-13 07:02:53,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATION [2021-10-13 07:02:53,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATION [2021-10-13 07:02:53,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATION [2021-10-13 07:02:53,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATION [2021-10-13 07:02:53,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:02:53,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATION [2021-10-13 07:02:53,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATION [2021-10-13 07:02:53,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATION [2021-10-13 07:02:53,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATION [2021-10-13 07:02:53,315 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATION [2021-10-13 07:02:53,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATION [2021-10-13 07:02:53,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,316 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATION [2021-10-13 07:02:53,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATION [2021-10-13 07:02:53,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATION [2021-10-13 07:02:53,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATION [2021-10-13 07:02:53,317 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57REQUIRES_VIOLATION [2021-10-13 07:02:53,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58REQUIRES_VIOLATION [2021-10-13 07:02:53,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59REQUIRES_VIOLATION [2021-10-13 07:02:53,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60REQUIRES_VIOLATION [2021-10-13 07:02:53,318 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr63REQUIRES_VIOLATION [2021-10-13 07:02:53,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr64REQUIRES_VIOLATION [2021-10-13 07:02:53,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr65REQUIRES_VIOLATION [2021-10-13 07:02:53,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr66REQUIRES_VIOLATION [2021-10-13 07:02:53,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr68ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,320 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr69ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr70ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr71REQUIRES_VIOLATION [2021-10-13 07:02:53,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr72REQUIRES_VIOLATION [2021-10-13 07:02:53,321 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr73ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr74ASSERT_VIOLATIONMEMORY_DEREFERENCE [2021-10-13 07:02:53,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr75REQUIRES_VIOLATION [2021-10-13 07:02:53,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr76REQUIRES_VIOLATION [2021-10-13 07:02:53,322 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr77REQUIRES_VIOLATION [2021-10-13 07:02:53,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr78REQUIRES_VIOLATION [2021-10-13 07:02:53,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr79REQUIRES_VIOLATION [2021-10-13 07:02:53,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr80REQUIRES_VIOLATION [2021-10-13 07:02:53,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr81ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr82ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,324 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr86ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,325 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr89ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr90ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,326 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr92ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:02:53,327 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr93ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:02:53,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:53,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:53,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:02:53,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5eaba3cb-83d3-417a-b46c-7ea965d95e63/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:02:53,939 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:02:53,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:02:53 BoogieIcfgContainer [2021-10-13 07:02:53,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:02:53,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:02:53,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:02:53,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:02:53,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:59:55" (3/4) ... [2021-10-13 07:02:53,974 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:02:53,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:02:53,976 INFO L168 Benchmark]: Toolchain (without parser) took 182483.12 ms. Allocated memory was 69.2 MB in the beginning and 211.8 MB in the end (delta: 142.6 MB). Free memory was 44.3 MB in the beginning and 155.8 MB in the end (delta: -111.6 MB). Peak memory consumption was 30.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:53,976 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:53,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1562.59 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 44.1 MB in the beginning and 62.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:53,978 INFO L168 Benchmark]: Boogie Procedure Inliner took 154.71 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 58.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:53,979 INFO L168 Benchmark]: Boogie Preprocessor took 139.51 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 53.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:53,979 INFO L168 Benchmark]: RCFGBuilder took 1742.58 ms. Allocated memory is still 96.5 MB. Free memory was 53.1 MB in the beginning and 55.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:53,980 INFO L168 Benchmark]: TraceAbstraction took 178868.05 ms. Allocated memory was 96.5 MB in the beginning and 211.8 MB in the end (delta: 115.3 MB). Free memory was 54.5 MB in the beginning and 156.7 MB in the end (delta: -102.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:02:53,980 INFO L168 Benchmark]: Witness Printer took 5.15 ms. Allocated memory is still 211.8 MB. Free memory is still 156.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:02:53,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 54.5 MB. Free memory is still 35.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1562.59 ms. Allocated memory was 69.2 MB in the beginning and 96.5 MB in the end (delta: 27.3 MB). Free memory was 44.1 MB in the beginning and 62.5 MB in the end (delta: -18.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 154.71 ms. Allocated memory is still 96.5 MB. Free memory was 62.5 MB in the beginning and 58.1 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 139.51 ms. Allocated memory is still 96.5 MB. Free memory was 58.1 MB in the beginning and 53.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1742.58 ms. Allocated memory is still 96.5 MB. Free memory was 53.1 MB in the beginning and 55.1 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 178868.05 ms. Allocated memory was 96.5 MB in the beginning and 211.8 MB in the end (delta: 115.3 MB). Free memory was 54.5 MB in the beginning and 156.7 MB in the end (delta: -102.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.15 ms. Allocated memory is still 211.8 MB. Free memory is still 156.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1318] static const char *applet_name; [L1319] static signed int bb_errno_location; [L1320] static signed int * const bb_errno = &bb_errno_location; [L1512] static struct utmp dummy_utmp; [L1594] char *a = malloc(11); [L1595] a[10] = 0 [L1596] int i=0; [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND TRUE i<10 [L1597] a[i]=__VERIFIER_nondet_char() [L1596] ++i [L1596] COND FALSE !(i<10) [L1598] applet_name = a [L1599] bb_errno_location = __VERIFIER_nondet_int() - UnprovableResult [Line: 1595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1595]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1597]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1599]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1610]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1612]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1334]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1334]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1342]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1342]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1354]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1354]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1356]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1361]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1366]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1371]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1383]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1396]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1396]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1484]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1484]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1488]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1488]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1491]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1491]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1447]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1432]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1432]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1397]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1397]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1400]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1400]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1402]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1408]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1416]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1416]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1505]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1505]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1616]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1617]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1617]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1617]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1618]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1618]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1618]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1619]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1619]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1619]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 241 locations, 94 error locations. Started 1 CEGAR loops. OverallTime: 178783.0ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 14.6ms, AutomataDifference: 6410.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1238 SDtfs, 408 SDslu, 1942 SDs, 0 SdLazy, 879 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5342.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1034.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 132.0ms AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 147.7ms SsaConstructionTime, 1087.0ms SatisfiabilityAnalysisTime, 3487.1ms InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 1340 SizeOfPredicates, 3 NumberOfNonLiveVariables, 987 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...