./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:01,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:01,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:01,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:01,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:01,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:01,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:01,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:01,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:01,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:01,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:01,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:01,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:01,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:01,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:01,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:01,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:01,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:01,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:01,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:01,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:01,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:01,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:01,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:01,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:01,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:01,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:01,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:01,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:01,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:01,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:01,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:01,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:01,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:01,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:01,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:01,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:01,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:01,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:01,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:01,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:01,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:40:01,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:01,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:01,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:01,405 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:01,405 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:01,405 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:01,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:40:01,405 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:01,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:01,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:40:01,406 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:40:01,406 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:01,406 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:40:01,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:40:01,407 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:40:01,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:01,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:01,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:40:01,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:01,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:01,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:01,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:01,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:01,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:01,415 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:01,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:01,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:01,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:01,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:01,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:01,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:01,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:01,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:01,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:01,417 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:40:01,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:40:01,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:01,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:01,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:01,418 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_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-11-03 03:40:01,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:01,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:01,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:01,690 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:01,691 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:01,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-03 03:40:01,760 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/5cbc5c50f/539bc9c2e25b4dedbb5f1e93961197b7/FLAG6cfa3cd72 [2021-11-03 03:40:02,399 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:02,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-03 03:40:02,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/5cbc5c50f/539bc9c2e25b4dedbb5f1e93961197b7/FLAG6cfa3cd72 [2021-11-03 03:40:02,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/5cbc5c50f/539bc9c2e25b4dedbb5f1e93961197b7 [2021-11-03 03:40:02,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:02,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:02,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:02,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:02,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:02,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:02" (1/1) ... [2021-11-03 03:40:02,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7996d350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:02, skipping insertion in model container [2021-11-03 03:40:02,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:02" (1/1) ... [2021-11-03 03:40:02,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:02,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:03,211 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-03 03:40:03,377 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-03 03:40:03,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:03,401 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-03 03:40:03,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@43737512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:03, skipping insertion in model container [2021-11-03 03:40:03,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:03,402 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:40:03,405 INFO L168 Benchmark]: Toolchain (without parser) took 796.86 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 68.2 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:03,406 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 102.8 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:40:03,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.27 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 68.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:40:03,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 102.8 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 794.27 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 68.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:40:05,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:40:05,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:40:05,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:40:05,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:40:05,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:40:05,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:40:05,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:40:05,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:40:05,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:40:05,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:40:05,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:40:05,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:40:05,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:40:05,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:40:05,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:40:05,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:40:05,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:40:05,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:40:05,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:40:05,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:40:05,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:40:05,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:40:05,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:40:05,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:40:05,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:40:05,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:40:05,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:40:05,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:40:05,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:40:05,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:40:05,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:40:05,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:40:05,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:40:05,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:40:05,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:40:05,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:40:05,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:40:05,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:40:05,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:40:05,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:40:05,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:40:05,723 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:40:05,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:40:05,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:40:05,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:40:05,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:40:05,724 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:40:05,724 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:40:05,724 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:40:05,724 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:40:05,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:40:05,725 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:40:05,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:40:05,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:40:05,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:40:05,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:40:05,726 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:40:05,726 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:40:05,727 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:40:05,727 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:40:05,727 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:40:05,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:40:05,727 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:40:05,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:40:05,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:40:05,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:40:05,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:40:05,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:05,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:40:05,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:40:05,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:40:05,729 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:40:05,729 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:05,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:40:05,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:40:05,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:40:05,730 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_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-11-03 03:40:06,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:40:06,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:40:06,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:40:06,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:40:06,153 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:40:06,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-03 03:40:06,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/6e4b345b1/311bbb39adf242c785f9345f94033567/FLAG921308b9a [2021-11-03 03:40:06,929 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:40:06,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-11-03 03:40:06,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/6e4b345b1/311bbb39adf242c785f9345f94033567/FLAG921308b9a [2021-11-03 03:40:07,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/data/6e4b345b1/311bbb39adf242c785f9345f94033567 [2021-11-03 03:40:07,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:40:07,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:40:07,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:07,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:40:07,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:40:07,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:07" (1/1) ... [2021-11-03 03:40:07,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a51e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:07, skipping insertion in model container [2021-11-03 03:40:07,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:40:07" (1/1) ... [2021-11-03 03:40:07,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:40:07,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:07,616 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-03 03:40:07,805 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-03 03:40:07,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:07,832 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:40:07,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:40:07,895 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-03 03:40:07,996 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-03 03:40:07,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:08,010 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:40:08,038 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-11-03 03:40:08,081 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_4b2f17d7-ed20-4978-a540-151277d2dc87/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-11-03 03:40:08,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:40:08,134 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:40:08,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08 WrapperNode [2021-11-03 03:40:08,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:40:08,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:08,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:40:08,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:40:08,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:40:08,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:40:08,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:40:08,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:40:08,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:40:08,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:40:08,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:40:08,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:40:08,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (1/1) ... [2021-11-03 03:40:08,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:40:08,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:08,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:40:08,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:40:08,521 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:40:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:40:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:40:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:40:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:40:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:40:08,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:40:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:40:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:40:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:40:08,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:40:08,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:40:14,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:40:14,870 INFO L299 CfgBuilder]: Removed 76 assume(true) statements. [2021-11-03 03:40:14,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:14 BoogieIcfgContainer [2021-11-03 03:40:14,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:40:14,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:40:14,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:40:14,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:40:14,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:40:07" (1/3) ... [2021-11-03 03:40:14,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245b229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:14, skipping insertion in model container [2021-11-03 03:40:14,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:40:08" (2/3) ... [2021-11-03 03:40:14,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245b229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:40:14, skipping insertion in model container [2021-11-03 03:40:14,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:40:14" (3/3) ... [2021-11-03 03:40:14,882 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2021-11-03 03:40:14,887 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:40:14,887 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 03:40:14,935 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:40:14,942 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:40:14,942 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 03:40:14,965 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 170 states have (on average 1.723529411764706) internal successors, (293), 176 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:40:14,971 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:14,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:14,973 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash 239231399, now seen corresponding path program 1 times [2021-11-03 03:40:15,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:15,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380468286] [2021-11-03 03:40:15,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:15,006 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:15,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:15,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:15,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:40:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:15,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:40:15,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:15,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:15,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:15,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380468286] [2021-11-03 03:40:15,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380468286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:15,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:15,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:40:15,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983295495] [2021-11-03 03:40:15,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:40:15,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:40:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:40:15,307 INFO L87 Difference]: Start difference. First operand has 177 states, 170 states have (on average 1.723529411764706) internal successors, (293), 176 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:15,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:15,358 INFO L93 Difference]: Finished difference Result 352 states and 584 transitions. [2021-11-03 03:40:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:40:15,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 03:40:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:15,369 INFO L225 Difference]: With dead ends: 352 [2021-11-03 03:40:15,370 INFO L226 Difference]: Without dead ends: 173 [2021-11-03 03:40:15,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:40:15,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-03 03:40:15,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-03 03:40:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 167 states have (on average 1.347305389221557) internal successors, (225), 172 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2021-11-03 03:40:15,416 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 225 transitions. Word has length 9 [2021-11-03 03:40:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:15,416 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 225 transitions. [2021-11-03 03:40:15,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 225 transitions. [2021-11-03 03:40:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:15,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:15,419 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:15,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:15,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:15,634 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:15,635 INFO L85 PathProgramCache]: Analyzing trace with hash 627334177, now seen corresponding path program 1 times [2021-11-03 03:40:15,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:15,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720690472] [2021-11-03 03:40:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:15,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:15,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:15,637 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:15,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:40:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:15,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:15,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:16,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:16,216 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:16,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720690472] [2021-11-03 03:40:16,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720690472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:16,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:16,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:40:16,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932980866] [2021-11-03 03:40:16,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:16,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:16,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:16,227 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:16,395 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2021-11-03 03:40:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:16,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 44 [2021-11-03 03:40:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:16,398 INFO L225 Difference]: With dead ends: 264 [2021-11-03 03:40:16,398 INFO L226 Difference]: Without dead ends: 182 [2021-11-03 03:40:16,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-03 03:40:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-03 03:40:16,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 170 states have (on average 1.2941176470588236) internal successors, (220), 175 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:16,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 220 transitions. [2021-11-03 03:40:16,421 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 220 transitions. Word has length 44 [2021-11-03 03:40:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:16,422 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 220 transitions. [2021-11-03 03:40:16,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 220 transitions. [2021-11-03 03:40:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:16,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:16,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:16,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:16,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:16,637 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:16,638 INFO L85 PathProgramCache]: Analyzing trace with hash -317554283, now seen corresponding path program 1 times [2021-11-03 03:40:16,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:16,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904962806] [2021-11-03 03:40:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:16,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:16,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:16,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:16,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:40:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:16,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 03:40:16,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:17,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:17,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:17,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904962806] [2021-11-03 03:40:17,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904962806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:17,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:17,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 03:40:17,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154320888] [2021-11-03 03:40:17,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 03:40:17,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 03:40:17,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:40:17,684 INFO L87 Difference]: Start difference. First operand 176 states and 220 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:17,820 INFO L93 Difference]: Finished difference Result 260 states and 320 transitions. [2021-11-03 03:40:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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 44 [2021-11-03 03:40:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:17,823 INFO L225 Difference]: With dead ends: 260 [2021-11-03 03:40:17,824 INFO L226 Difference]: Without dead ends: 175 [2021-11-03 03:40:17,824 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 03:40:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-03 03:40:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-11-03 03:40:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 164 states have (on average 1.2804878048780488) internal successors, (210), 169 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 210 transitions. [2021-11-03 03:40:17,836 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 210 transitions. Word has length 44 [2021-11-03 03:40:17,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:17,837 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 210 transitions. [2021-11-03 03:40:17,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:17,838 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 210 transitions. [2021-11-03 03:40:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:40:17,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:17,841 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:17,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:18,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:18,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:18,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:18,043 INFO L85 PathProgramCache]: Analyzing trace with hash -575719721, now seen corresponding path program 1 times [2021-11-03 03:40:18,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:18,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135758726] [2021-11-03 03:40:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:18,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:18,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:18,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:18,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:40:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:18,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:18,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:18,379 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:18,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:18,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:40:18,452 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:40:18,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-03 03:40:18,533 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:40:18,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-03 03:40:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:18,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:18,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:18,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:18,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135758726] [2021-11-03 03:40:18,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135758726] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:18,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:18,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:40:18,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520659755] [2021-11-03 03:40:18,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:40:18,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:40:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:18,851 INFO L87 Difference]: Start difference. First operand 170 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:27,004 INFO L93 Difference]: Finished difference Result 447 states and 536 transitions. [2021-11-03 03:40:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:40:27,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 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 44 [2021-11-03 03:40:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:27,007 INFO L225 Difference]: With dead ends: 447 [2021-11-03 03:40:27,008 INFO L226 Difference]: Without dead ends: 367 [2021-11-03 03:40:27,008 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 03:40:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-11-03 03:40:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 172. [2021-11-03 03:40:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 166 states have (on average 1.2771084337349397) internal successors, (212), 171 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-03 03:40:27,027 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 44 [2021-11-03 03:40:27,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:27,027 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-03 03:40:27,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-03 03:40:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:40:27,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:27,031 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:27,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:27,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:27,246 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1988408325, now seen corresponding path program 1 times [2021-11-03 03:40:27,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:27,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660531479] [2021-11-03 03:40:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:27,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:27,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:27,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:40:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:27,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:27,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:27,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:28,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:28,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660531479] [2021-11-03 03:40:28,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660531479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:28,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:28,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:40:28,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810431376] [2021-11-03 03:40:28,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:40:28,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:40:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:40:28,157 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:28,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:28,292 INFO L93 Difference]: Finished difference Result 349 states and 432 transitions. [2021-11-03 03:40:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:28,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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 96 [2021-11-03 03:40:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:28,297 INFO L225 Difference]: With dead ends: 349 [2021-11-03 03:40:28,298 INFO L226 Difference]: Without dead ends: 181 [2021-11-03 03:40:28,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:40:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-03 03:40:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-11-03 03:40:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 174 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2021-11-03 03:40:28,321 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 96 [2021-11-03 03:40:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:28,322 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2021-11-03 03:40:28,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2021-11-03 03:40:28,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-03 03:40:28,325 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:28,325 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:28,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:28,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:28,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:28,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash -312930543, now seen corresponding path program 1 times [2021-11-03 03:40:28,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:28,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66594025] [2021-11-03 03:40:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:28,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:28,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:28,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:28,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:40:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:28,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:28,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:29,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:30,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:30,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66594025] [2021-11-03 03:40:30,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66594025] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:30,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:30,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:40:30,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509284490] [2021-11-03 03:40:30,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:40:30,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:40:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:40:30,070 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:30,518 INFO L93 Difference]: Finished difference Result 450 states and 525 transitions. [2021-11-03 03:40:30,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:40:30,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 96 [2021-11-03 03:40:30,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:30,521 INFO L225 Difference]: With dead ends: 450 [2021-11-03 03:40:30,521 INFO L226 Difference]: Without dead ends: 279 [2021-11-03 03:40:30,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:40:30,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-03 03:40:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 267. [2021-11-03 03:40:30,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 261 states have (on average 1.2030651340996168) internal successors, (314), 266 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 314 transitions. [2021-11-03 03:40:30,535 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 314 transitions. Word has length 96 [2021-11-03 03:40:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:30,536 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 314 transitions. [2021-11-03 03:40:30,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 314 transitions. [2021-11-03 03:40:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-03 03:40:30,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:30,540 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:30,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 03:40:30,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:30,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1090926304, now seen corresponding path program 1 times [2021-11-03 03:40:30,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:30,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625282060] [2021-11-03 03:40:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:30,762 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:30,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:30,763 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:30,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:40:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:31,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:31,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:31,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:40:31,854 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:31,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625282060] [2021-11-03 03:40:31,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625282060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:31,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:40:31,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:40:31,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000707968] [2021-11-03 03:40:31,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:31,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:31,856 INFO L87 Difference]: Start difference. First operand 267 states and 314 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:31,920 INFO L93 Difference]: Finished difference Result 492 states and 585 transitions. [2021-11-03 03:40:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:31,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 103 [2021-11-03 03:40:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:31,923 INFO L225 Difference]: With dead ends: 492 [2021-11-03 03:40:31,923 INFO L226 Difference]: Without dead ends: 270 [2021-11-03 03:40:31,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:40:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-03 03:40:31,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-03 03:40:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 264 states have (on average 1.2007575757575757) internal successors, (317), 269 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 317 transitions. [2021-11-03 03:40:31,935 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 317 transitions. Word has length 103 [2021-11-03 03:40:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:31,936 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 317 transitions. [2021-11-03 03:40:31,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 317 transitions. [2021-11-03 03:40:31,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-03 03:40:31,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:31,938 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:31,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:32,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:32,151 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:32,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:32,152 INFO L85 PathProgramCache]: Analyzing trace with hash -786182228, now seen corresponding path program 1 times [2021-11-03 03:40:32,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:32,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712331736] [2021-11-03 03:40:32,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:32,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:32,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:32,158 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:32,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 03:40:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:32,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:32,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:40:33,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:40:33,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:33,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712331736] [2021-11-03 03:40:33,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712331736] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:33,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [636955233] [2021-11-03 03:40:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:33,407 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:33,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:40:33,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:40:33,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-03 03:40:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:34,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:40:34,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:34,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 03:40:34,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-03 03:40:34,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [636955233] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:40:34,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 03:40:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-03 03:40:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94434608] [2021-11-03 03:40:34,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:40:34,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:40:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:40:34,966 INFO L87 Difference]: Start difference. First operand 270 states and 317 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:39,084 INFO L93 Difference]: Finished difference Result 444 states and 523 transitions. [2021-11-03 03:40:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:40:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 106 [2021-11-03 03:40:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:39,088 INFO L225 Difference]: With dead ends: 444 [2021-11-03 03:40:39,088 INFO L226 Difference]: Without dead ends: 219 [2021-11-03 03:40:39,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-03 03:40:39,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-03 03:40:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-11-03 03:40:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 213 states have (on average 1.187793427230047) internal successors, (253), 218 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2021-11-03 03:40:39,099 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 106 [2021-11-03 03:40:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:39,099 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2021-11-03 03:40:39,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2021-11-03 03:40:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-03 03:40:39,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:39,102 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:39,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:39,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:39,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:40:39,506 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:39,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:39,506 INFO L85 PathProgramCache]: Analyzing trace with hash 530495470, now seen corresponding path program 1 times [2021-11-03 03:40:39,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:39,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1333432142] [2021-11-03 03:40:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:39,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:39,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:39,508 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:40:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:40,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:40,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:40:40,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:40,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:40:40,780 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:40,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1333432142] [2021-11-03 03:40:40,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1333432142] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:40,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [604777023] [2021-11-03 03:40:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:40,781 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:40:40,797 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:40:40,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 03:40:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:41,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:40:41,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:40:42,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:42,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:40:42,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [604777023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:42,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241732309] [2021-11-03 03:40:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:40:42,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:42,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:42,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:42,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-03 03:40:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:40:43,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:40:43,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:40:43,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:40:43,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241732309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:43,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:40:43,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 03:40:43,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337682220] [2021-11-03 03:40:43,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:40:43,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:40:43,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:40:43,655 INFO L87 Difference]: Start difference. First operand 219 states and 253 transitions. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:43,950 INFO L93 Difference]: Finished difference Result 396 states and 467 transitions. [2021-11-03 03:40:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:40:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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 113 [2021-11-03 03:40:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:43,952 INFO L225 Difference]: With dead ends: 396 [2021-11-03 03:40:43,953 INFO L226 Difference]: Without dead ends: 227 [2021-11-03 03:40:43,953 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 676 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:40:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-03 03:40:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2021-11-03 03:40:43,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 221 states have (on average 1.1809954751131222) internal successors, (261), 226 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 261 transitions. [2021-11-03 03:40:43,964 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 261 transitions. Word has length 113 [2021-11-03 03:40:43,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:43,964 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 261 transitions. [2021-11-03 03:40:43,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:43,965 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 261 transitions. [2021-11-03 03:40:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-03 03:40:43,966 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:43,967 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:43,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:44,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:44,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:44,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:44,583 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:44,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1097325138, now seen corresponding path program 2 times [2021-11-03 03:40:44,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:44,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781505940] [2021-11-03 03:40:44,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:40:44,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:44,585 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:44,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 03:40:45,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:40:45,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:40:45,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:40:45,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:40:46,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:40:46,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:40:46,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781505940] [2021-11-03 03:40:46,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781505940] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:46,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [587317171] [2021-11-03 03:40:46,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:40:46,646 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:40:46,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:40:46,648 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:40:46,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 03:40:48,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:40:48,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:40:48,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:40:48,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:40:48,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-03 03:40:48,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [587317171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:48,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059814146] [2021-11-03 03:40:48,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:40:48,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:48,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:40:48,693 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:40:48,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-03 03:40:49,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:40:49,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:40:49,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 03:40:49,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:40:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:40:50,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:40:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:40:51,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059814146] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:40:51,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:40:51,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 8, 8] total 27 [2021-11-03 03:40:51,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471376333] [2021-11-03 03:40:51,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-03 03:40:51,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:40:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-03 03:40:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-03 03:40:51,012 INFO L87 Difference]: Start difference. First operand 227 states and 261 transitions. Second operand has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:40:54,898 INFO L93 Difference]: Finished difference Result 583 states and 695 transitions. [2021-11-03 03:40:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-03 03:40:54,900 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 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 121 [2021-11-03 03:40:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:40:54,903 INFO L225 Difference]: With dead ends: 583 [2021-11-03 03:40:54,903 INFO L226 Difference]: Without dead ends: 410 [2021-11-03 03:40:54,904 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=386, Invalid=736, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 03:40:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-03 03:40:54,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2021-11-03 03:40:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 243 states have (on average 1.168724279835391) 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) [2021-11-03 03:40:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 284 transitions. [2021-11-03 03:40:54,922 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 284 transitions. Word has length 121 [2021-11-03 03:40:54,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:40:54,922 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 284 transitions. [2021-11-03 03:40:54,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:40:54,923 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 284 transitions. [2021-11-03 03:40:54,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-03 03:40:54,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:40:54,925 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:40:54,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:55,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:55,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-03 03:40:55,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:40:55,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 03:40:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:40:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1558699730, now seen corresponding path program 3 times [2021-11-03 03:40:55,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:40:55,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184553200] [2021-11-03 03:40:55,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:40:55,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:40:55,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:40:55,543 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:40:55,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 03:41:00,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:41:00,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:41:00,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-03 03:41:00,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:41:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:41:01,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:41:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:41:03,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:41:03,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184553200] [2021-11-03 03:41:03,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184553200] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:41:03,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1170006566] [2021-11-03 03:41:03,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:41:03,364 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:41:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:41:03,365 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:41:03,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-03 03:43:06,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-03 03:43:06,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:43:06,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 03:43:06,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:43:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:43:07,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:43:10,462 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 91 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-03 03:43:10,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1170006566] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:43:10,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87798450] [2021-11-03 03:43:10,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 03:43:10,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:43:10,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:43:10,464 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:43:10,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b2f17d7-ed20-4978-a540-151277d2dc87/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process