./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs --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 58eecb02814a6b78cadd872f0ade36a8b32c0833 .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs --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 58eecb02814a6b78cadd872f0ade36a8b32c0833 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:05:12,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:12,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:12,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:12,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:12,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:12,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:12,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:12,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:12,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:12,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:12,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:12,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:12,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:12,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:12,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:12,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:12,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:12,871 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:12,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:12,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:12,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:12,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:12,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:12,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:12,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:12,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:12,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:12,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:12,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:12,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:12,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:12,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:12,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:12,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:12,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:12,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:12,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:12,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:12,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:12,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:12,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:05:12,962 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:12,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:12,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:12,964 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:12,964 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:12,964 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:12,964 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:05:12,965 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:12,971 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:12,971 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:05:12,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:05:12,973 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:12,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:05:12,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:05:12,973 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:05:12,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:12,974 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:12,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:05:12,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:12,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:12,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:12,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:12,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:12,975 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:12,976 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:12,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:12,976 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:12,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:12,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:12,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:12,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:12,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:12,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:12,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:12,979 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:05:12,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:05:12,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:12,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:12,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:12,980 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_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58eecb02814a6b78cadd872f0ade36a8b32c0833 [2021-10-16 03:05:13,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:13,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:13,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:13,273 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:13,274 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:13,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2021-10-16 03:05:13,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/0e353a43c/434ae022a3cb41e9b5522e810d3ea200/FLAGbc3559f4f [2021-10-16 03:05:13,814 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:13,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2021-10-16 03:05:13,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/0e353a43c/434ae022a3cb41e9b5522e810d3ea200/FLAGbc3559f4f [2021-10-16 03:05:14,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/0e353a43c/434ae022a3cb41e9b5522e810d3ea200 [2021-10-16 03:05:14,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:14,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:14,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:14,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:14,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:14,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a5eb209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14, skipping insertion in model container [2021-10-16 03:05:14,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:14,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:14,444 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_a938b54e-c481-4eed-aabb-3ff8f7102d71/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2021-10-16 03:05:14,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:14,468 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:14,480 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_a938b54e-c481-4eed-aabb-3ff8f7102d71/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2021-10-16 03:05:14,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:14,500 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:14,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14 WrapperNode [2021-10-16 03:05:14,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:14,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:14,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:14,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:14,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:14,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:14,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:14,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:14,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:14,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:14,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:14,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:14,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (1/1) ... [2021-10-16 03:05:14,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:14,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:14,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:14,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:05:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 03:05:14,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:14,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:05:14,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:05:14,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:14,982 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 03:05:14,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:14 BoogieIcfgContainer [2021-10-16 03:05:14,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:15,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:15,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:15,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:15,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:14" (1/3) ... [2021-10-16 03:05:15,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d74af13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:15, skipping insertion in model container [2021-10-16 03:05:15,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:14" (2/3) ... [2021-10-16 03:05:15,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d74af13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:15, skipping insertion in model container [2021-10-16 03:05:15,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:14" (3/3) ... [2021-10-16 03:05:15,009 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c [2021-10-16 03:05:15,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:15,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:15,089 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:15,096 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, mConcurrency=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 [2021-10-16 03:05:15,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:05:15,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:15,113 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:05:15,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash 71697392, now seen corresponding path program 1 times [2021-10-16 03:05:15,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:15,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835232769] [2021-10-16 03:05:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:15,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:15,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:15,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835232769] [2021-10-16 03:05:15,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835232769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:15,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:15,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:05:15,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364212447] [2021-10-16 03:05:15,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:05:15,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:05:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:05:15,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:15,321 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:15,351 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2021-10-16 03:05:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:05:15,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:05:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:15,360 INFO L225 Difference]: With dead ends: 21 [2021-10-16 03:05:15,360 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 03:05:15,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:05:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 03:05:15,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2021-10-16 03:05:15,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-10-16 03:05:15,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2021-10-16 03:05:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:15,394 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-16 03:05:15,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2021-10-16 03:05:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:05:15,395 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:15,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:05:15,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:05:15,396 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2077007100, now seen corresponding path program 1 times [2021-10-16 03:05:15,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:05:15,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218003819] [2021-10-16 03:05:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:15,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:05:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:15,445 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:05:15,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218003819] [2021-10-16 03:05:15,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218003819] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 03:05:15,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489437024] [2021-10-16 03:05:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:15,446 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:15,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:15,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:15,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:05:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:15,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:05:15,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:15,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:15,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489437024] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:15,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [94765458] [2021-10-16 03:05:15,669 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-16 03:05:15,670 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:05:15,676 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:05:15,683 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:05:15,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:05:15,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,746 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:05:15,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-16 03:05:15,754 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:05:15,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-16 03:05:15,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-10-16 03:05:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:15,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:15,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:15,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:15,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:15,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:05:15,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-16 03:05:15,843 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-16 03:05:15,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-16 03:05:15,849 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:05:15,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:05:15,928 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:05:15,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-16 03:05:15,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:05:15,937 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:152, output treesize:157 [2021-10-16 03:05:15,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:16,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:16,154 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_24| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:05:16,158 INFO L168 Benchmark]: Toolchain (without parser) took 1972.97 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 65.1 MB in the beginning and 94.9 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:16,158 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 107.0 MB. Free memory is still 81.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:16,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.76 ms. Allocated memory is still 107.0 MB. Free memory was 64.9 MB in the beginning and 81.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:16,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.29 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:16,160 INFO L168 Benchmark]: Boogie Preprocessor took 23.44 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 79.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:16,161 INFO L168 Benchmark]: RCFGBuilder took 424.43 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 66.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 03:05:16,162 INFO L168 Benchmark]: TraceAbstraction took 1154.57 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 66.1 MB in the beginning and 94.9 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:05:16,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 107.0 MB. Free memory is still 81.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.76 ms. Allocated memory is still 107.0 MB. Free memory was 64.9 MB in the beginning and 81.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.29 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.2 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.44 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 79.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 424.43 ms. Allocated memory is still 107.0 MB. Free memory was 79.0 MB in the beginning and 66.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1154.57 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 66.1 MB in the beginning and 94.9 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_24| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_24|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:05:16,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:05:18,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:05:18,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:05:18,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:05:18,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:05:18,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:05:18,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:05:18,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:05:18,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:05:18,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:05:18,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:05:18,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:05:18,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:05:18,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:05:18,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:05:18,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:05:18,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:05:18,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:05:18,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:05:18,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:05:18,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:05:18,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:05:18,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:05:18,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:05:18,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:05:18,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:05:18,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:05:18,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:05:18,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:05:18,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:05:18,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:05:18,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:05:18,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:05:18,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:05:18,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:05:18,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:05:18,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:05:18,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:05:18,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:05:18,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:05:18,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:05:18,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:05:18,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:05:18,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:05:18,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:05:18,777 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:05:18,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:05:18,777 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:05:18,778 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:05:18,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:05:18,778 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:05:18,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:05:18,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:05:18,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:05:18,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:05:18,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:05:18,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:05:18,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:05:18,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:05:18,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:05:18,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:05:18,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:05:18,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:05:18,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:05:18,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:05:18,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:05:18,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:05:18,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:05:18,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:18,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:05:18,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:05:18,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:05:18,787 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:05:18,787 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:18,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:05:18,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:05:18,788 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:05:18,788 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_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58eecb02814a6b78cadd872f0ade36a8b32c0833 [2021-10-16 03:05:19,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:05:19,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:05:19,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:05:19,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:05:19,207 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:05:19,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2021-10-16 03:05:19,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/b4344e49d/ab7a7bcaa32f48b38253bda08a82a3fe/FLAG8ae8b39be [2021-10-16 03:05:19,899 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:05:19,899 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c [2021-10-16 03:05:19,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/b4344e49d/ab7a7bcaa32f48b38253bda08a82a3fe/FLAG8ae8b39be [2021-10-16 03:05:20,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/data/b4344e49d/ab7a7bcaa32f48b38253bda08a82a3fe [2021-10-16 03:05:20,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:05:20,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:05:20,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:20,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:05:20,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:05:20,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7084bda9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20, skipping insertion in model container [2021-10-16 03:05:20,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:05:20,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:05:20,432 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_a938b54e-c481-4eed-aabb-3ff8f7102d71/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2021-10-16 03:05:20,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:20,482 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:05:20,498 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_a938b54e-c481-4eed-aabb-3ff8f7102d71/sv-benchmarks/c/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400] [2021-10-16 03:05:20,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:05:20,537 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:05:20,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20 WrapperNode [2021-10-16 03:05:20,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:05:20,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:20,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:05:20,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:05:20,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:05:20,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:05:20,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:05:20,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:05:20,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:05:20,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:05:20,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:05:20,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:05:20,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (1/1) ... [2021-10-16 03:05:20,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:05:20,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:20,715 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:05:20,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:05:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-16 03:05:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:05:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:05:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:05:20,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:05:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-16 03:05:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:05:21,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:05:21,129 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-16 03:05:21,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:21 BoogieIcfgContainer [2021-10-16 03:05:21,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:05:21,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:05:21,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:05:21,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:05:21,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:05:20" (1/3) ... [2021-10-16 03:05:21,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a4adb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:21, skipping insertion in model container [2021-10-16 03:05:21,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:05:20" (2/3) ... [2021-10-16 03:05:21,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a4adb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:05:21, skipping insertion in model container [2021-10-16 03:05:21,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:21" (3/3) ... [2021-10-16 03:05:21,140 INFO L111 eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c [2021-10-16 03:05:21,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:05:21,151 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:05:21,241 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:05:21,248 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, mConcurrency=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 [2021-10-16 03:05:21,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:05:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:05:21,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:21,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:21,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:21,274 INFO L82 PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times [2021-10-16 03:05:21,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:21,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702060700] [2021-10-16 03:05:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:21,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:21,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:21,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:21,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:05:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:21,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:05:21,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:21,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:21,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:21,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702060700] [2021-10-16 03:05:21,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702060700] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:21,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:05:21,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:05:21,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972504086] [2021-10-16 03:05:21,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:05:21,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:21,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:05:21,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:21,561 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:21,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:21,648 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2021-10-16 03:05:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:05:21,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 8 [2021-10-16 03:05:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:21,660 INFO L225 Difference]: With dead ends: 45 [2021-10-16 03:05:21,660 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 03:05:21,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:05:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 03:05:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 13. [2021-10-16 03:05:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-16 03:05:21,696 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-10-16 03:05:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:21,696 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-16 03:05:21,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-16 03:05:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-16 03:05:21,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:21,697 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:21,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:21,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:21,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:21,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:21,910 INFO L82 PathProgramCache]: Analyzing trace with hash 780776823, now seen corresponding path program 1 times [2021-10-16 03:05:21,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:21,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980879420] [2021-10-16 03:05:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:21,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:21,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:21,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:21,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:05:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:22,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:22,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:22,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:22,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:22,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980879420] [2021-10-16 03:05:22,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980879420] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:22,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2108879328] [2021-10-16 03:05:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:22,180 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:22,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:22,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:22,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2021-10-16 03:05:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:22,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:22,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:22,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:05:22,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2108879328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:22,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683134794] [2021-10-16 03:05:22,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:22,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:22,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:22,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:22,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-16 03:05:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:22,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:05:22,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:05:22,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683134794] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:05:22,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 03:05:22,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 11 [2021-10-16 03:05:22,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473658221] [2021-10-16 03:05:22,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:05:22,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:05:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-16 03:05:22,731 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:22,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:22,818 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-10-16 03:05:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:05:22,819 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-16 03:05:22,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:22,820 INFO L225 Difference]: With dead ends: 22 [2021-10-16 03:05:22,820 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:05:22,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 99.0ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:05:22,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:05:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-16 03:05:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-16 03:05:22,828 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-10-16 03:05:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:22,830 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-16 03:05:22,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-16 03:05:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:05:22,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:22,832 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:22,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:23,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:23,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 03:05:23,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:05:23,447 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:23,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:23,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1239457577, now seen corresponding path program 1 times [2021-10-16 03:05:23,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:23,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073915664] [2021-10-16 03:05:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:23,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:23,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:23,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:05:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:23,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:23,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:05:23,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:05:23,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:23,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073915664] [2021-10-16 03:05:23,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073915664] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:23,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408349142] [2021-10-16 03:05:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:23,678 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:23,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:23,682 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:23,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 03:05:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:23,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 03:05:23,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:05:23,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 03:05:23,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [408349142] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:23,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17098491] [2021-10-16 03:05:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:05:23,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:23,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:23,933 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:23,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 03:05:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:05:24,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 03:05:24,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:05:24,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 03:05:25,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17098491] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:25,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:05:25,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 15 [2021-10-16 03:05:25,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267987303] [2021-10-16 03:05:25,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-16 03:05:25,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-16 03:05:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-16 03:05:25,236 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:26,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:05:26,280 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-16 03:05:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 03:05:26,280 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 03:05:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:05:26,293 INFO L225 Difference]: With dead ends: 43 [2021-10-16 03:05:26,293 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 03:05:26,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1180.9ms TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-10-16 03:05:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 03:05:26,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 03:05:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:26,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 03:05:26,301 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14 [2021-10-16 03:05:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:05:26,301 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 03:05:26,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 15 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 03:05:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 03:05:26,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:05:26,303 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:05:26,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:26,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 03:05:26,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:05:26,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:26,926 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:05:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:05:26,927 INFO L82 PathProgramCache]: Analyzing trace with hash -159646049, now seen corresponding path program 2 times [2021-10-16 03:05:26,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:05:26,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319253497] [2021-10-16 03:05:26,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:05:26,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:05:26,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:05:26,929 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:05:26,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:05:27,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:05:27,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:05:27,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:05:27,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 03:05:27,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 03:05:27,485 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:05:27,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319253497] [2021-10-16 03:05:27,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319253497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:27,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1432085207] [2021-10-16 03:05:27,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:05:27,486 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:05:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:05:27,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:05:27,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 03:05:27,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:05:27,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:05:27,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:05:27,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 03:05:27,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-16 03:05:27,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1432085207] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:27,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044715120] [2021-10-16 03:05:27,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:05:27,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:05:27,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:05:27,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:05:28,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 03:05:28,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:05:28,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:05:28,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 03:05:28,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:05:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-16 03:05:40,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:05:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-16 03:05:57,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044715120] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:05:57,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:05:57,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 31 [2021-10-16 03:05:57,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272023123] [2021-10-16 03:05:57,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-16 03:05:57,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:05:57,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-16 03:05:57,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=680, Unknown=1, NotChecked=0, Total=930 [2021-10-16 03:05:57,641 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:27,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:06:27,075 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2021-10-16 03:06:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-16 03:06:27,075 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 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 26 [2021-10-16 03:06:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:06:27,076 INFO L225 Difference]: With dead ends: 61 [2021-10-16 03:06:27,076 INFO L226 Difference]: Without dead ends: 41 [2021-10-16 03:06:27,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 47282.0ms TimeCoverageRelationStatistics Valid=431, Invalid=1208, Unknown=1, NotChecked=0, Total=1640 [2021-10-16 03:06:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-16 03:06:27,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-16 03:06:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-16 03:06:27,086 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 26 [2021-10-16 03:06:27,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:06:27,087 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-16 03:06:27,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:06:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-16 03:06:27,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-16 03:06:27,090 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:06:27,090 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:06:27,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:27,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:27,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:27,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 03:06:27,694 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:06:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:06:27,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1907904535, now seen corresponding path program 3 times [2021-10-16 03:06:27,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:06:27,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099626712] [2021-10-16 03:06:27,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-16 03:06:27,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:06:27,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:06:27,697 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:06:27,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 03:06:28,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-10-16 03:06:28,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-16 03:06:28,257 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:06:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:06:28,560 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 03:06:28,561 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:06:28,562 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:06:28,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-16 03:06:28,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:06:28,780 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:06:28,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:06:28 BoogieIcfgContainer [2021-10-16 03:06:28,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:06:28,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:06:28,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:06:28,840 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:06:28,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:05:21" (3/4) ... [2021-10-16 03:06:28,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:06:28,924 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:06:28,928 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:06:28,930 INFO L168 Benchmark]: Toolchain (without parser) took 68676.19 ms. Allocated memory was 75.5 MB in the beginning and 109.1 MB in the end (delta: 33.6 MB). Free memory was 56.3 MB in the beginning and 81.8 MB in the end (delta: -25.5 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:28,931 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 56.0 MB in the beginning and 56.0 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:06:28,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.28 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 46.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:28,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.37 ms. Allocated memory is still 75.5 MB. Free memory was 46.1 MB in the beginning and 58.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:28,932 INFO L168 Benchmark]: Boogie Preprocessor took 55.88 ms. Allocated memory is still 75.5 MB. Free memory was 58.1 MB in the beginning and 56.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:06:28,933 INFO L168 Benchmark]: RCFGBuilder took 453.10 ms. Allocated memory is still 75.5 MB. Free memory was 56.8 MB in the beginning and 46.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:28,933 INFO L168 Benchmark]: TraceAbstraction took 67705.82 ms. Allocated memory was 75.5 MB in the beginning and 109.1 MB in the end (delta: 33.6 MB). Free memory was 46.3 MB in the beginning and 86.0 MB in the end (delta: -39.7 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:28,934 INFO L168 Benchmark]: Witness Printer took 89.19 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 81.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:06:28,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 75.5 MB. Free memory was 56.0 MB in the beginning and 56.0 MB in the end (delta: 54.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.28 ms. Allocated memory is still 75.5 MB. Free memory was 56.2 MB in the beginning and 46.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.37 ms. Allocated memory is still 75.5 MB. Free memory was 46.1 MB in the beginning and 58.1 MB in the end (delta: -12.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.88 ms. Allocated memory is still 75.5 MB. Free memory was 58.1 MB in the beginning and 56.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 453.10 ms. Allocated memory is still 75.5 MB. Free memory was 56.8 MB in the beginning and 46.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 67705.82 ms. Allocated memory was 75.5 MB in the beginning and 109.1 MB in the end (delta: 33.6 MB). Free memory was 46.3 MB in the beginning and 86.0 MB in the end (delta: -39.7 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * Witness Printer took 89.19 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 81.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] char in[11]; [L17] char *s; [L18] unsigned char c; [L19] int i, j; [L20] int idx_in; [L21] i = 0 [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND TRUE i < 11 [L22] in[i] = __VERIFIER_nondet_char() [L21] i++ [L21] COND FALSE !(i < 11) [L23] in[10] = 0 [L24] idx_in = 0 [L25] s = in [L26] i = 0 [L27] EXPR in[idx_in] [L27] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND TRUE ('0' <= c) && (c <= '9') [L30] j = c - '0' [L31] i = i * 10U + j [L32] idx_in++ [L33] EXPR in[idx_in] [L33] c = in[idx_in] [L28] COND FALSE !(('0' <= c) && (c <= '9')) [L8] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 67537.2ms, OverallIterations: 5, TraceHistogramMax: 11, EmptinessCheckTime: 13.3ms, AutomataDifference: 30732.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 117 SDslu, 138 SDs, 0 SdLazy, 291 SolverSat, 97 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5682.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 328 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 48572.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 130.5ms SsaConstructionTime, 878.3ms SatisfiabilityAnalysisTime, 32167.4ms InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 308 ConstructedInterpolants, 18 QuantifiedInterpolants, 1429 SizeOfPredicates, 31 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 20 InterpolantComputations, 4 PerfectInterpolantSequences, 184/408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-16 03:06:29,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a938b54e-c481-4eed-aabb-3ff8f7102d71/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...