./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.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_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/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_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/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_378e5394-e48b-4fb6-95bb-f572189b76e3/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 0036602275d14d2f63e3aedc245d67d50c1210f9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/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_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/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_378e5394-e48b-4fb6-95bb-f572189b76e3/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 0036602275d14d2f63e3aedc245d67d50c1210f9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:34:16,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:34:16,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:34:16,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:34:16,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:34:16,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:34:16,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:34:16,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:34:16,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:34:16,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:34:16,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:34:16,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:34:16,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:34:16,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:34:16,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:34:16,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:34:16,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:34:16,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:34:16,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:34:16,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:34:16,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:34:16,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:34:16,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:34:16,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:34:16,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:34:16,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:34:16,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:34:16,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:34:16,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:34:16,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:34:16,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:34:16,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:34:16,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:34:16,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:34:16,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:34:16,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:34:16,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:34:16,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:34:16,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:34:16,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:34:16,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:34:16,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:34:16,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:34:16,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:34:16,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:34:16,872 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:34:16,872 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:34:16,873 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:34:16,873 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:34:16,873 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:34:16,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:34:16,880 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:34:16,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:34:16,881 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:34:16,881 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:34:16,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:34:16,882 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:34:16,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:34:16,883 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:34:16,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:34:16,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:34:16,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:34:16,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:34:16,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:34:16,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:34:16,884 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:34:16,884 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:34:16,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:34:16,885 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:34:16,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:34:16,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:34:16,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:34:16,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:16,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:34:16,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:34:16,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:34:16,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:34:16,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:34:16,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:34:16,889 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:34:16,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:34:16,889 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_378e5394-e48b-4fb6-95bb-f572189b76e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2021-10-16 02:34:17,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:34:17,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:34:17,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:34:17,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:34:17,194 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:34:17,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-10-16 02:34:17,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/c46c3c7a5/1db3842ecf0640348ff35751b9ab1934/FLAGfe48cb370 [2021-10-16 02:34:17,773 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:17,774 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-10-16 02:34:17,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/c46c3c7a5/1db3842ecf0640348ff35751b9ab1934/FLAGfe48cb370 [2021-10-16 02:34:18,115 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/c46c3c7a5/1db3842ecf0640348ff35751b9ab1934 [2021-10-16 02:34:18,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:18,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:18,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:18,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:18,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:18,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9f0f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18, skipping insertion in model container [2021-10-16 02:34:18,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:18,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:18,350 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_378e5394-e48b-4fb6-95bb-f572189b76e3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-10-16 02:34:18,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:18,382 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:34:18,394 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_378e5394-e48b-4fb6-95bb-f572189b76e3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-10-16 02:34:18,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:18,412 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:34:18,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18 WrapperNode [2021-10-16 02:34:18,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:18,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:18,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:34:18,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:34:18,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:18,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:34:18,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:34:18,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:34:18,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:34:18,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:34:18,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:34:18,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:34:18,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (1/1) ... [2021-10-16 02:34:18,481 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:18,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:18,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:34:18,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:34:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:34:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:34:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:34:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:34:18,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:34:18,859 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-16 02:34:18,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:18 BoogieIcfgContainer [2021-10-16 02:34:18,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:34:18,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:34:18,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:34:18,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:34:18,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:34:18" (1/3) ... [2021-10-16 02:34:18,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17882fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:18, skipping insertion in model container [2021-10-16 02:34:18,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:18" (2/3) ... [2021-10-16 02:34:18,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17882fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:18, skipping insertion in model container [2021-10-16 02:34:18,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:18" (3/3) ... [2021-10-16 02:34:18,885 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2021-10-16 02:34:18,890 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:34:18,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:34:18,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:34:18,993 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 02:34:18,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:34:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 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 02:34:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:34:19,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:19,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:34:19,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2021-10-16 02:34:19,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:19,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957238838] [2021-10-16 02:34:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:19,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:19,205 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 02:34:19,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:19,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957238838] [2021-10-16 02:34:19,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957238838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:19,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:19,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:34:19,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414776521] [2021-10-16 02:34:19,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:34:19,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:19,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:34:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:34:19,235 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) 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 02:34:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:19,254 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-10-16 02:34:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:34:19,255 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) 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 02:34:19,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:19,262 INFO L225 Difference]: With dead ends: 57 [2021-10-16 02:34:19,262 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:34:19,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:34:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:34:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 02:34:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) 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 02:34:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 02:34:19,296 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-10-16 02:34:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:19,297 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 02:34:19,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) 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 02:34:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 02:34:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:34:19,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:19,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:34:19,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:34:19,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:19,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:19,299 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2021-10-16 02:34:19,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:19,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636122655] [2021-10-16 02:34:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:19,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:19,410 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 02:34:19,410 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:19,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636122655] [2021-10-16 02:34:19,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636122655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:19,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:34:19,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621691298] [2021-10-16 02:34:19,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:19,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:19,415 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 02:34:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:19,550 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-16 02:34:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:34:19,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 02:34:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:19,556 INFO L225 Difference]: With dead ends: 54 [2021-10-16 02:34:19,556 INFO L226 Difference]: Without dead ends: 50 [2021-10-16 02:34:19,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:19,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-16 02:34:19,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2021-10-16 02:34:19,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 36 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 02:34:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-10-16 02:34:19,583 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 5 [2021-10-16 02:34:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:19,584 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-10-16 02:34:19,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 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 02:34:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-10-16 02:34:19,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:34:19,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:19,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:19,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:34:19,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:19,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2021-10-16 02:34:19,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:19,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667946940] [2021-10-16 02:34:19,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:19,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:19,617 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:34:19,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241827616] [2021-10-16 02:34:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:19,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:19,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:19,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:19,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:34:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:19,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:34:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:19,817 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 02:34:19,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:19,876 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 02:34:19,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:19,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667946940] [2021-10-16 02:34:19,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:34:19,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241827616] [2021-10-16 02:34:19,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241827616] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:19,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:19,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:34:19,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075182315] [2021-10-16 02:34:19,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:34:19,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:34:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:19,880 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 02:34:19,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:19,960 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-10-16 02:34:19,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:34:19,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 7 [2021-10-16 02:34:19,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:19,963 INFO L225 Difference]: With dead ends: 49 [2021-10-16 02:34:19,964 INFO L226 Difference]: Without dead ends: 45 [2021-10-16 02:34:19,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:34:19,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-16 02:34:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-10-16 02:34:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.303030303030303) internal successors, (43), 38 states have internal predecessors, (43), 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 02:34:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-16 02:34:19,982 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 7 [2021-10-16 02:34:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:19,983 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-16 02:34:19,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 02:34:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-16 02:34:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:34:19,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:19,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:20,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-16 02:34:20,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:20,199 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:20,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:20,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1983963802, now seen corresponding path program 1 times [2021-10-16 02:34:20,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:20,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514406860] [2021-10-16 02:34:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:20,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:20,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:34:20,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907539961] [2021-10-16 02:34:20,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:20,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:20,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:20,217 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:20,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 02:34:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:20,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:34:20,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:20,409 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 02:34:20,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:20,497 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 02:34:20,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:20,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514406860] [2021-10-16 02:34:20,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:34:20,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907539961] [2021-10-16 02:34:20,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907539961] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:20,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:20,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:34:20,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035242735] [2021-10-16 02:34:20,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:34:20,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:34:20,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:20,503 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 02:34:25,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:25,909 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2021-10-16 02:34:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:34:25,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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) Word has length 9 [2021-10-16 02:34:25,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:25,911 INFO L225 Difference]: With dead ends: 71 [2021-10-16 02:34:25,911 INFO L226 Difference]: Without dead ends: 58 [2021-10-16 02:34:25,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:34:25,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-16 02:34:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2021-10-16 02:34:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 46 states have internal predecessors, (53), 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 02:34:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2021-10-16 02:34:25,920 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 9 [2021-10-16 02:34:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:25,921 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2021-10-16 02:34:25,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 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 02:34:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2021-10-16 02:34:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:34:25,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:25,922 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:25,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:26,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:26,139 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:26,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:26,140 INFO L82 PathProgramCache]: Analyzing trace with hash 966688274, now seen corresponding path program 1 times [2021-10-16 02:34:26,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:26,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042196541] [2021-10-16 02:34:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:26,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:26,156 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 02:34:26,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614491487] [2021-10-16 02:34:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:26,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:26,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:26,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 02:34:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:26,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 02:34:26,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:26,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:34:26,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:26,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042196541] [2021-10-16 02:34:26,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 02:34:26,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614491487] [2021-10-16 02:34:26,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614491487] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:26,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602904917] [2021-10-16 02:34:26,522 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-10-16 02:34:26,522 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:34:26,526 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:34:26,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:34:26,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:34:26,590 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,596 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:34:26,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:34:26,601 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:34:26,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:34:26,608 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-16 02:34:26,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:26,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:26,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:26,730 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-10-16 02:34:26,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 43 treesize of output 42 [2021-10-16 02:34:26,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:34:26,738 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,739 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-16 02:34:26,739 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:34:26,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:26,801 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:26,809 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-10-16 02:34:26,810 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:34:26,811 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:136, output treesize:120 [2021-10-16 02:34:26,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:27,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:27,031 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_9| 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 02:34:27,035 INFO L168 Benchmark]: Toolchain (without parser) took 8915.57 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 66.8 MB in the beginning and 58.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 47.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:27,036 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 83.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:27,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.41 ms. Allocated memory is still 109.1 MB. Free memory was 66.6 MB in the beginning and 83.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:27,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.17 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 81.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:27,037 INFO L168 Benchmark]: Boogie Preprocessor took 22.08 ms. Allocated memory is still 109.1 MB. Free memory was 81.4 MB in the beginning and 80.6 MB in the end (delta: 720.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:27,038 INFO L168 Benchmark]: RCFGBuilder took 390.11 ms. Allocated memory is still 109.1 MB. Free memory was 80.2 MB in the beginning and 69.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:27,039 INFO L168 Benchmark]: TraceAbstraction took 8170.09 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 68.8 MB in the beginning and 58.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:27,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory is still 83.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.41 ms. Allocated memory is still 109.1 MB. Free memory was 66.6 MB in the beginning and 83.2 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.17 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 81.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.08 ms. Allocated memory is still 109.1 MB. Free memory was 81.4 MB in the beginning and 80.6 MB in the end (delta: 720.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 390.11 ms. Allocated memory is still 109.1 MB. Free memory was 80.2 MB in the beginning and 69.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8170.09 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 68.8 MB in the beginning and 58.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 51.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_9| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_9|: 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 02:34:27,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:34:29,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:34:29,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:34:29,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:34:29,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:34:29,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:34:29,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:34:29,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:34:29,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:34:29,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:34:29,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:34:29,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:34:29,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:34:29,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:34:29,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:34:29,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:34:29,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:34:29,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:34:29,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:34:29,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:34:29,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:34:29,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:34:29,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:34:29,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:34:29,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:34:29,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:34:29,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:34:29,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:34:29,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:34:29,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:34:29,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:34:29,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:34:29,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:34:29,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:34:29,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:34:29,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:34:29,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:34:29,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:34:29,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:34:29,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:34:29,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:34:29,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:34:29,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:34:29,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:34:29,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:34:29,711 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:34:29,711 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:34:29,711 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:34:29,712 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:34:29,712 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:34:29,712 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:34:29,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:34:29,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:34:29,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:34:29,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:34:29,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:34:29,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:34:29,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:34:29,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:34:29,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:34:29,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:34:29,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:34:29,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:34:29,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:34:29,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:34:29,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:34:29,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:34:29,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:34:29,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:29,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:34:29,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:34:29,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:34:29,717 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:34:29,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:29,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:34:29,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:34:29,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:34:29,718 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_378e5394-e48b-4fb6-95bb-f572189b76e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2021-10-16 02:34:30,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:34:30,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:34:30,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:34:30,140 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:34:30,142 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:34:30,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-10-16 02:34:30,210 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/42cecc436/419f743d2fa04dea9938038296a4af43/FLAGbd24ee793 [2021-10-16 02:34:30,767 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:30,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2021-10-16 02:34:30,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/42cecc436/419f743d2fa04dea9938038296a4af43/FLAGbd24ee793 [2021-10-16 02:34:31,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/data/42cecc436/419f743d2fa04dea9938038296a4af43 [2021-10-16 02:34:31,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:31,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:31,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:31,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:31,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:31,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62ccadaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31, skipping insertion in model container [2021-10-16 02:34:31,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:31,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:31,309 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_378e5394-e48b-4fb6-95bb-f572189b76e3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-10-16 02:34:31,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:31,359 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:34:31,384 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_378e5394-e48b-4fb6-95bb-f572189b76e3/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2021-10-16 02:34:31,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:31,433 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:34:31,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31 WrapperNode [2021-10-16 02:34:31,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:31,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:31,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:34:31,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:34:31,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:31,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:34:31,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:34:31,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:34:31,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:34:31,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:34:31,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:34:31,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:34:31,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (1/1) ... [2021-10-16 02:34:31,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:31,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:34:31,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:34:31,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:34:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:34:31,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:34:31,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:34:32,324 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:34:32,325 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-16 02:34:32,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:32 BoogieIcfgContainer [2021-10-16 02:34:32,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:34:32,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:34:32,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:34:32,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:34:32,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:34:31" (1/3) ... [2021-10-16 02:34:32,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ff60e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:32, skipping insertion in model container [2021-10-16 02:34:32,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:31" (2/3) ... [2021-10-16 02:34:32,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73ff60e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:32, skipping insertion in model container [2021-10-16 02:34:32,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:32" (3/3) ... [2021-10-16 02:34:32,336 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2021-10-16 02:34:32,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:34:32,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-16 02:34:32,409 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:34:32,416 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 02:34:32,417 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-16 02:34:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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 02:34:32,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:34:32,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:32,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:34:32,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-16 02:34:32,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:32,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939363213] [2021-10-16 02:34:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:32,459 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:32,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:32,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:34:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:32,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:34:32,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:32,613 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 02:34:32,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:32,646 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 02:34:32,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:32,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939363213] [2021-10-16 02:34:32,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939363213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:32,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:32,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:34:32,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451557475] [2021-10-16 02:34:32,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:34:32,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:34:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:34:32,684 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 02:34:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:32,706 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-16 02:34:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:34:32,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:34:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:32,716 INFO L225 Difference]: With dead ends: 62 [2021-10-16 02:34:32,717 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:34:32,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:34:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:34:32,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 02:34:32,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 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 02:34:32,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-16 02:34:32,760 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-16 02:34:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:32,760 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-16 02:34:32,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 02:34:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-16 02:34:32,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:34:32,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:32,762 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:34:32,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:32,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:32,973 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-16 02:34:32,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:32,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809876742] [2021-10-16 02:34:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:32,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:32,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:32,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:33,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:34:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:33,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:34:33,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:33,244 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 02:34:33,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:33,332 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 02:34:33,332 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:33,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809876742] [2021-10-16 02:34:33,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809876742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:33,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:33,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:34:33,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787432607] [2021-10-16 02:34:33,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:34:33,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:34:33,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:34:33,338 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 02:34:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:33,982 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-16 02:34:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 02:34:33,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 6 [2021-10-16 02:34:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:33,986 INFO L225 Difference]: With dead ends: 51 [2021-10-16 02:34:33,986 INFO L226 Difference]: Without dead ends: 47 [2021-10-16 02:34:33,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 144.9ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:34:33,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-16 02:34:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 24. [2021-10-16 02:34:33,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.25) internal successors, (25), 23 states have internal predecessors, (25), 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 02:34:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-16 02:34:33,994 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2021-10-16 02:34:33,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:33,994 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-16 02:34:33,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 02:34:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-16 02:34:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:34:33,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:33,996 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:34,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:34,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:34,207 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:34,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:34,207 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-16 02:34:34,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:34,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538904026] [2021-10-16 02:34:34,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:34,208 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:34,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:34,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:34:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:34,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:34:34,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:34,446 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 02:34:34,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:36,105 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 02:34:36,105 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:36,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538904026] [2021-10-16 02:34:36,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538904026] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:36,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:36,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:34:36,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772248922] [2021-10-16 02:34:36,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:34:36,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:34:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:34:36,109 INFO L87 Difference]: Start difference. First operand 24 states and 25 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 02:34:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:37,573 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-10-16 02:34:37,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:34:37,582 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 8 [2021-10-16 02:34:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:37,583 INFO L225 Difference]: With dead ends: 47 [2021-10-16 02:34:37,583 INFO L226 Difference]: Without dead ends: 43 [2021-10-16 02:34:37,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 805.2ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:34:37,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-16 02:34:37,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-10-16 02:34:37,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.25) internal successors, (40), 35 states have internal predecessors, (40), 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 02:34:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-16 02:34:37,596 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2021-10-16 02:34:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:37,596 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-16 02:34:37,597 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 02:34:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-16 02:34:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:34:37,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:37,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:37,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:37,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:37,811 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:37,812 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-16 02:34:37,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:37,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302203901] [2021-10-16 02:34:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:37,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:37,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:37,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:34:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:37,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 02:34:37,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:38,104 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 02:34:38,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:40,598 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 02:34:40,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:40,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302203901] [2021-10-16 02:34:40,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302203901] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:40,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:40,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 02:34:40,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262473176] [2021-10-16 02:34:40,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:34:40,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:40,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:34:40,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:34:40,602 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 02:34:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:48,116 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-10-16 02:34:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-16 02:34:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) Word has length 10 [2021-10-16 02:34:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:48,126 INFO L225 Difference]: With dead ends: 64 [2021-10-16 02:34:48,126 INFO L226 Difference]: Without dead ends: 51 [2021-10-16 02:34:48,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3062.5ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:34:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-16 02:34:48,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 44. [2021-10-16 02:34:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.2) internal successors, (48), 43 states have internal predecessors, (48), 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 02:34:48,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-16 02:34:48,140 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 10 [2021-10-16 02:34:48,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:48,141 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-16 02:34:48,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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 02:34:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-16 02:34:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:34:48,142 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:48,142 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:48,157 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:34:48,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:48,357 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:34:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:48,357 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2021-10-16 02:34:48,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:48,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570155957] [2021-10-16 02:34:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:48,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:48,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:48,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 02:34:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:48,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:34:48,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:48,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:53,149 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:53,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570155957] [2021-10-16 02:34:53,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570155957] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:53,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [588092454] [2021-10-16 02:34:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:53,150 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:53,171 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:53,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-16 02:34:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:53,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:34:53,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:53,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:56,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [588092454] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:56,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86331826] [2021-10-16 02:34:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:56,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:56,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:56,354 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:56,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-16 02:34:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:56,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:34:56,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:56,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:35:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:35:04,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86331826] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:35:04,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:35:04,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 7] total 11 [2021-10-16 02:35:04,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568053870] [2021-10-16 02:35:04,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-16 02:35:04,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:35:04,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-16 02:35:04,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=74, Unknown=1, NotChecked=0, Total=110 [2021-10-16 02:35:04,913 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 02:36:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:34,932 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2021-10-16 02:36:34,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-16 02:36:34,941 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 16 [2021-10-16 02:36:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:34,943 INFO L225 Difference]: With dead ends: 85 [2021-10-16 02:36:34,943 INFO L226 Difference]: Without dead ends: 77 [2021-10-16 02:36:34,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 21239.3ms TimeCoverageRelationStatistics Valid=102, Invalid=200, Unknown=4, NotChecked=0, Total=306 [2021-10-16 02:36:34,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-16 02:36:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2021-10-16 02:36:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 59 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-10-16 02:36:34,963 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 16 [2021-10-16 02:36:34,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:34,964 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-10-16 02:36:34,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 02:36:34,965 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-10-16 02:36:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-16 02:36:34,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:34,966 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-10-16 02:36:35,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:35,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-16 02:36:35,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-16 02:36:35,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:36:35,588 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:36:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:35,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2021-10-16 02:36:35,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:36:35,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823337434] [2021-10-16 02:36:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:35,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:36:35,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:36:35,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:36:35,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:36:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:36,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:36:36,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:36,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:36,424 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:36:36,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823337434] [2021-10-16 02:36:36,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823337434] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:36:36,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1090029868] [2021-10-16 02:36:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:36,425 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:36:36,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:36:36,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:36:36,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:36:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:37,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:36:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:37,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:37,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:37,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1090029868] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:36:37,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735469191] [2021-10-16 02:36:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:37,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:36:37,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:36:37,349 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:36:37,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:36:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:37,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:36:37,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:37,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:38,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735469191] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:36:38,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:36:38,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2021-10-16 02:36:38,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788632576] [2021-10-16 02:36:38,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:36:38,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:36:38,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:36:38,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:36:38,088 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 02:36:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:38,289 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2021-10-16 02:36:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 02:36:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 02:36:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:38,290 INFO L225 Difference]: With dead ends: 68 [2021-10-16 02:36:38,290 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 02:36:38,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-16 02:36:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 02:36:38,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 02:36:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0) internal successors, (27), 27 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-10-16 02:36:38,300 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 26 [2021-10-16 02:36:38,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:38,301 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-10-16 02:36:38,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 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 02:36:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-10-16 02:36:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-16 02:36:38,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:36:38,303 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:36:38,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:38,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:38,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:38,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:36:38,926 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-16 02:36:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:36:38,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2021-10-16 02:36:38,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:36:38,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678078036] [2021-10-16 02:36:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:36:38,928 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:36:38,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:36:38,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:36:38,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:36:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:36:39,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:36:39,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:36:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:36:39,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:36:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-16 02:36:48,236 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:36:48,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678078036] [2021-10-16 02:36:48,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678078036] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-16 02:36:48,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-16 02:36:48,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2021-10-16 02:36:48,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936207081] [2021-10-16 02:36:48,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:36:48,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:36:48,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:36:48,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:36:48,239 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 02:36:51,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:51,847 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-10-16 02:36:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:36:51,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) Word has length 27 [2021-10-16 02:36:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:51,858 INFO L225 Difference]: With dead ends: 28 [2021-10-16 02:36:51,858 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:36:51,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 4291.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:36:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:36:51,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:36:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:36:51,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-10-16 02:36:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:51,859 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:36:51,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 02:36:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:36:51,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:36:51,863 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:51,863 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:51,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:51,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:51,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:51,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:51,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-16 02:36:52,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:36:52,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:36:52,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:52,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:37:04,944 WARN L207 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2021-10-16 02:37:28,673 WARN L207 SmtUtils]: Spent 20.20 s on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-10-16 02:37:28,685 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:37:28,685 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:37:28,686 INFO L860 garLoopResultBuilder]: At program point L48(lines 21 49) the Hoare annotation is: true [2021-10-16 02:37:28,686 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:37:28,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:37:28,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:37:28,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:37:28,686 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:37:28,687 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:37:28,687 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse4 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse2 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~t~0 (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse4))))) (or (and (= ~counter~0 (_ bv1 32)) (= .cse0 ULTIMATE.start_main_~s~0) (= .cse1 ULTIMATE.start_main_~a~0) .cse2 .cse3) (and (= (_ bv2 32) ~counter~0) .cse2 (= (bvadd (bvmul (_ bv2 64) .cse0) .cse4) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse1 .cse0)) .cse3)))) [2021-10-16 02:37:28,687 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:37:28,687 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse3 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse0 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse4 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (= ULTIMATE.start_main_~t~0 (bvadd .cse2 (bvmul ULTIMATE.start_main_~a~0 .cse3))))) (or (and (= (_ bv2 32) ~counter~0) .cse0 .cse1 (= (bvadd (bvmul (_ bv2 64) .cse2) .cse3) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse4 .cse2)) .cse5) (and (= ~counter~0 (_ bv1 32)) .cse0 (= .cse2 ULTIMATE.start_main_~s~0) (= .cse4 ULTIMATE.start_main_~a~0) .cse1 .cse5)))) [2021-10-16 02:37:28,688 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:37:28,688 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse3 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse0 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse4 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse5 (= ULTIMATE.start_main_~t~0 (bvadd .cse2 (bvmul ULTIMATE.start_main_~a~0 .cse3))))) (or (and (= (_ bv2 32) ~counter~0) .cse0 .cse1 (= (bvadd (bvmul (_ bv2 64) .cse2) .cse3) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse4 .cse2)) .cse5) (and (= ~counter~0 (_ bv1 32)) .cse0 (= .cse2 ULTIMATE.start_main_~s~0) (= .cse4 ULTIMATE.start_main_~a~0) .cse1 .cse5)))) [2021-10-16 02:37:28,688 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:37:28,688 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse0 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse4 (= ULTIMATE.start_main_~t~0 (bvadd .cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2))))) (or (and .cse0 (= (bvadd (bvmul (_ bv2 64) .cse1) .cse2) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse3 .cse1)) .cse4) (and (= (bvadd .cse1 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) (bvmul ULTIMATE.start_main_~t~0 .cse2)) .cse3) (not (bvslt ~counter~0 (_ bv2 32))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul (_ bv2 64) (bvmul ULTIMATE.start_main_~a~0 .cse1)) (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse1 .cse1))) .cse0 (not (bvslt (bvadd (_ bv2 32) ~counter~0) (_ bv2 32))) .cse4) (and (= .cse1 ULTIMATE.start_main_~s~0) (= .cse3 ULTIMATE.start_main_~a~0) .cse0 .cse4)))) [2021-10-16 02:37:28,688 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:37:28,689 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:37:28,689 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) (bvmul ULTIMATE.start_main_~t~0 .cse1)) ((_ sign_extend 32) (_ bv0 32))) (= ULTIMATE.start_main_~t~0 (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1))))) [2021-10-16 02:37:28,689 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-16 02:37:28,689 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-16 02:37:28,689 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:37:28,689 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:37:28,690 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:37:28,690 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:37:28,690 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:37:28,690 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:37:28,690 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-16 02:37:28,690 INFO L857 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2021-10-16 02:37:28,691 INFO L853 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse5 ((_ sign_extend 32) (_ bv0 32))) (.cse4 ((_ sign_extend 32) (_ bv1 32)))) (let ((.cse8 (= .cse4 ULTIMATE.start_main_~t~0)) (.cse9 (= .cse5 ULTIMATE.start_main_~a~0)) (.cse3 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse6 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse7 (or (and .cse8 .cse9) (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= ULTIMATE.start_main_~t~0 (bvadd .cse4 (bvmul ULTIMATE.start_main_~a~0 .cse3))))))) (or (let ((.cse0 (bvmul ULTIMATE.start_main_~a~0 .cse4)) (.cse2 (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse1 (bvmul .cse4 .cse4))) (and (= (bvadd (bvmul (_ bv4 64) .cse0) (bvmul (_ bv4 64) .cse1) .cse2) (bvadd ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0 .cse3)) (= (_ bv2 32) ~counter~0) (= (bvadd .cse4 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) (bvmul ULTIMATE.start_main_~t~0 .cse3)) .cse5) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul (_ bv2 64) .cse0) .cse2 .cse1)) .cse6 .cse7)) (and (= ~counter~0 (_ bv1 32)) .cse6 .cse7 (= (bvadd (bvmul (_ bv2 64) .cse4) .cse3) ULTIMATE.start_main_~s~0) (= ULTIMATE.start_main_~a~0 (bvadd .cse5 .cse4))) (and .cse8 (= ~counter~0 (_ bv0 32)) (= .cse4 ULTIMATE.start_main_~s~0) .cse9))))) [2021-10-16 02:37:28,691 INFO L857 garLoopResultBuilder]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2021-10-16 02:37:28,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-16 02:37:28,697 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:37:28,718 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 02:37:28,721 INFO L168 Benchmark]: Toolchain (without parser) took 177578.11 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 47.6 MB in the beginning and 66.1 MB in the end (delta: -18.5 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:28,722 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:37:28,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.34 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 50.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:28,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.02 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 48.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:37:28,724 INFO L168 Benchmark]: Boogie Preprocessor took 28.57 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 47.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:28,724 INFO L168 Benchmark]: RCFGBuilder took 822.46 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 36.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:28,725 INFO L168 Benchmark]: TraceAbstraction took 176391.35 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 36.2 MB in the beginning and 66.1 MB in the end (delta: -29.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:28,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 67.1 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.34 ms. Allocated memory is still 67.1 MB. Free memory was 47.3 MB in the beginning and 50.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.02 ms. Allocated memory is still 67.1 MB. Free memory was 50.1 MB in the beginning and 48.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.57 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 47.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 822.46 ms. Allocated memory is still 67.1 MB. Free memory was 47.2 MB in the beginning and 36.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 176391.35 ms. Allocated memory was 67.1 MB in the beginning and 94.4 MB in the end (delta: 27.3 MB). Free memory was 36.2 MB in the beginning and 66.1 MB in the end (delta: -29.9 MB). Peak memory consumption was 37.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 176288.9ms, OverallIterations: 7, TraceHistogramMax: 3, EmptinessCheckTime: 15.1ms, AutomataDifference: 103571.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 36619.5ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 132 SDtfs, 233 SDslu, 312 SDs, 0 SdLazy, 320 SolverSat, 162 SolverUnsat, 35 SolverUnknown, 0 SolverNotchecked, 83981.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 307 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 29771.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=5, 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: 81.9ms AutomataMinimizationTime, 7 MinimizatonAttempts, 54 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 25 NumberOfFragments, 483 HoareAnnotationTreeSize, 8 FomulaSimplifications, 173 FormulaSimplificationTreeSizeReduction, 239.0ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 929 FormulaSimplificationTreeSizeReductionInter, 36372.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 105.0ms SsaConstructionTime, 1910.9ms SatisfiabilityAnalysisTime, 30591.4ms InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 2930 SizeOfPredicates, 32 NumberOfNonLiveVariables, 579 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 72/186 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((counter == 1bv32 && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || ((((2bv32 == counter && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((2bv32 == counter && !(cond == 0bv32)) && cond == 1bv32) && ~bvadd16(~bvmul64(2bv64, ~sign_extendFrom8To32(1bv32)), ~sign_extendFrom8To32(2bv32)) == s) && a == ~bvadd16(~sign_extendFrom8To32(0bv32), ~sign_extendFrom8To32(1bv32))) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) || (((((counter == 1bv32 && !(cond == 0bv32)) && ~sign_extendFrom8To32(1bv32) == s) && ~sign_extendFrom8To32(0bv32) == a) && cond == 1bv32) && t == ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32)))) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:37:28,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_378e5394-e48b-4fb6-95bb-f572189b76e3/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...