./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8 --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 163f0d60898e14d7676cd2b4cedacdaf3a468c45 ............................................................................................................................................................................................................................................................................................................................................................................ 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_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8 --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 163f0d60898e14d7676cd2b4cedacdaf3a468c45 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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-4e77c04 [2021-10-13 07:28:34,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:34,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:34,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:34,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:34,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:34,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:34,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:34,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:34,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:34,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:34,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:34,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:34,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:34,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:34,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:34,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:34,404 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:34,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:34,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:34,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:34,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:34,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:34,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:34,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:34,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:34,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:34,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:34,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:34,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:34,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:34,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:34,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:34,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:34,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:34,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:34,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:34,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:34,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:34,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:34,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:34,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:28:34,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:34,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:34,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:34,498 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:34,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:34,499 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:34,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:28:34,499 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:34,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:34,500 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:28:34,501 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:28:34,501 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:34,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:28:34,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:28:34,502 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:28:34,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:34,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:28:34,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:28:34,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:28:34,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:34,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:28:34,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:34,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:28:34,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:34,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:28:34,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:28:34,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:34,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:28:34,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:34,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:34,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:34,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:34,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:34,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:28:34,508 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:28:34,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:28:34,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:28:34,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:34,509 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:34,509 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_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163f0d60898e14d7676cd2b4cedacdaf3a468c45 [2021-10-13 07:28:34,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:34,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:34,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:34,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:34,842 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:34,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2021-10-13 07:28:34,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/a074a4643/8853449686894e1891f39165f4fb5c40/FLAG052dbd3af [2021-10-13 07:28:35,382 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:35,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2021-10-13 07:28:35,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/a074a4643/8853449686894e1891f39165f4fb5c40/FLAG052dbd3af [2021-10-13 07:28:35,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/a074a4643/8853449686894e1891f39165f4fb5c40 [2021-10-13 07:28:35,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:35,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:35,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:35,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:35,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:35,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:35" (1/1) ... [2021-10-13 07:28:35,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f43edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:35, skipping insertion in model container [2021-10-13 07:28:35,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:35" (1/1) ... [2021-10-13 07:28:35,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:35,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:35,973 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_76ef840a-7555-44de-a90d-79ac1580f9a4/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c[458,471] [2021-10-13 07:28:35,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:35,999 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:36,012 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_76ef840a-7555-44de-a90d-79ac1580f9a4/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c[458,471] [2021-10-13 07:28:36,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:36,034 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:36,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36 WrapperNode [2021-10-13 07:28:36,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:36,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:36,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:36,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:36,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:36,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:36,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:36,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:36,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:36,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:36,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:36,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:36,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (1/1) ... [2021-10-13 07:28:36,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:36,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:36,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:28:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:36,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:36,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:36,475 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 07:28:36,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:36 BoogieIcfgContainer [2021-10-13 07:28:36,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:36,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:36,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:36,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:36,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:35" (1/3) ... [2021-10-13 07:28:36,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee12104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:36, skipping insertion in model container [2021-10-13 07:28:36,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:36" (2/3) ... [2021-10-13 07:28:36,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee12104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:36, skipping insertion in model container [2021-10-13 07:28:36,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:36" (3/3) ... [2021-10-13 07:28:36,486 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.c [2021-10-13 07:28:36,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:36,492 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:28:36,539 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:36,546 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 [2021-10-13 07:28:36,547 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:28:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:28:36,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:36,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:28:36,580 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:36,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:36,586 INFO L82 PathProgramCache]: Analyzing trace with hash 3301933, now seen corresponding path program 1 times [2021-10-13 07:28:36,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:36,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363664160] [2021-10-13 07:28:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:36,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:36,731 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:28:36,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993498049] [2021-10-13 07:28:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:36,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:36,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:36,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:36,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:28:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:36,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:28:36,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:37,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:37,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:37,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:37,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363664160] [2021-10-13 07:28:37,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:28:37,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993498049] [2021-10-13 07:28:37,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993498049] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:37,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:37,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:28:37,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707183076] [2021-10-13 07:28:37,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:28:37,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:28:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:28:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:28:37,170 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-13 07:28:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:39,376 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-13 07:28:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:28:39,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 4 [2021-10-13 07:28:39,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:39,387 INFO L225 Difference]: With dead ends: 52 [2021-10-13 07:28:39,387 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 07:28:39,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:28:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 07:28:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-10-13 07:28:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-13 07:28:39,424 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 4 [2021-10-13 07:28:39,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:39,424 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-13 07:28:39,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-13 07:28:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-13 07:28:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:28:39,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:39,425 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-10-13 07:28:39,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:39,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:28:39,642 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:39,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:39,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1187658925, now seen corresponding path program 1 times [2021-10-13 07:28:39,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:28:39,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433845696] [2021-10-13 07:28:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:39,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:28:39,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:28:39,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856180248] [2021-10-13 07:28:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:39,665 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:28:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:39,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:28:39,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:28:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:39,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:28:39,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:39,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:28:40,076 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:28:40,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433845696] [2021-10-13 07:28:40,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:28:40,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856180248] [2021-10-13 07:28:40,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856180248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:28:40,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [791812949] [2021-10-13 07:28:40,101 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 07:28:40,102 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:28:40,107 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:28:40,113 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:28:40,114 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:28:40,147 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-10-13 07:28:40,154 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:28:40,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:28:40,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:28:40,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:28:40,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-13 07:28:40,216 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-13 07:28:40,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:28:40,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-13 07:28:40,225 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:28:40,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:40,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:40,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:28:40,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:28:40,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:28:40,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:28:40,256 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:28:40,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:28:40,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:28:40,356 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-13 07:28:40,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-10-13 07:28:40,377 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:28:40,378 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:290, output treesize:144 [2021-10-13 07:28:40,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:40,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-13 07:28:40,583 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_14| 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) [2021-10-13 07:28:40,590 INFO L168 Benchmark]: Toolchain (without parser) took 4800.83 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 51.2 MB in the beginning and 110.3 MB in the end (delta: -59.2 MB). Peak memory consumption was 40.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:40,590 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 88.1 MB. Free memory was 67.4 MB in the beginning and 67.4 MB in the end (delta: 60.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:40,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.44 ms. Allocated memory is still 88.1 MB. Free memory was 51.0 MB in the beginning and 41.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:40,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 88.1 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:40,592 INFO L168 Benchmark]: Boogie Preprocessor took 23.27 ms. Allocated memory is still 88.1 MB. Free memory was 39.4 MB in the beginning and 38.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:28:40,593 INFO L168 Benchmark]: RCFGBuilder took 381.36 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 38.2 MB in the beginning and 104.7 MB in the end (delta: -66.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:40,593 INFO L168 Benchmark]: TraceAbstraction took 4108.64 ms. Allocated memory is still 136.3 MB. Free memory was 104.0 MB in the beginning and 110.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:28:40,606 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 88.1 MB. Free memory was 67.4 MB in the beginning and 67.4 MB in the end (delta: 60.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.44 ms. Allocated memory is still 88.1 MB. Free memory was 51.0 MB in the beginning and 41.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.69 ms. Allocated memory is still 88.1 MB. Free memory was 40.9 MB in the beginning and 39.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.27 ms. Allocated memory is still 88.1 MB. Free memory was 39.4 MB in the beginning and 38.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 381.36 ms. Allocated memory was 88.1 MB in the beginning and 136.3 MB in the end (delta: 48.2 MB). Free memory was 38.2 MB in the beginning and 104.7 MB in the end (delta: -66.4 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4108.64 ms. Allocated memory is still 136.3 MB. Free memory was 104.0 MB in the beginning and 110.3 MB in the end (delta: -6.3 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_14| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_14|: 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. [2021-10-13 07:28:40,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:28:43,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:28:43,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:28:43,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:28:43,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:28:43,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:28:43,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:28:43,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:28:43,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:28:43,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:28:43,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:28:43,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:28:43,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:28:43,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:28:43,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:28:43,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:28:43,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:28:43,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:28:43,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:28:43,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:28:43,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:28:43,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:28:43,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:28:43,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:28:43,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:28:43,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:28:43,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:28:43,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:28:43,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:28:43,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:28:43,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:28:43,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:28:43,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:28:43,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:28:43,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:28:43,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:28:43,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:28:43,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:28:43,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:28:43,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:28:43,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:28:43,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:28:43,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:28:43,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:28:43,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:28:43,490 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:28:43,490 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:28:43,490 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:28:43,490 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:28:43,491 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:28:43,491 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:28:43,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:28:43,494 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:28:43,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:28:43,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:28:43,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:28:43,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:28:43,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:28:43,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:28:43,496 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:28:43,496 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:28:43,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:28:43,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:28:43,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:28:43,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:28:43,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:28:43,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:28:43,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:28:43,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:43,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:28:43,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:28:43,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:28:43,499 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:28:43,499 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:28:43,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:28:43,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:28:43,500 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:28:43,500 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_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163f0d60898e14d7676cd2b4cedacdaf3a468c45 [2021-10-13 07:28:43,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:28:43,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:28:43,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:28:43,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:28:43,959 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:28:43,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2021-10-13 07:28:44,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/b5e7c3e5b/1366129de455418d905fe206fc9a9730/FLAG180626398 [2021-10-13 07:28:44,592 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:28:44,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c [2021-10-13 07:28:44,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/b5e7c3e5b/1366129de455418d905fe206fc9a9730/FLAG180626398 [2021-10-13 07:28:44,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/data/b5e7c3e5b/1366129de455418d905fe206fc9a9730 [2021-10-13 07:28:44,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:28:44,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:28:44,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:44,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:28:44,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:28:44,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:44" (1/1) ... [2021-10-13 07:28:44,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db19956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:44, skipping insertion in model container [2021-10-13 07:28:44,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:28:44" (1/1) ... [2021-10-13 07:28:44,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:28:44,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:28:45,188 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_76ef840a-7555-44de-a90d-79ac1580f9a4/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c[458,471] [2021-10-13 07:28:45,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:45,234 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:28:45,247 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_76ef840a-7555-44de-a90d-79ac1580f9a4/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound2.c[458,471] [2021-10-13 07:28:45,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:28:45,274 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:28:45,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45 WrapperNode [2021-10-13 07:28:45,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:28:45,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:45,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:28:45,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:28:45,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:28:45,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:28:45,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:28:45,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:28:45,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:28:45,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:28:45,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:28:45,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:28:45,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (1/1) ... [2021-10-13 07:28:45,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:28:45,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:28:45,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:28:45,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:28:45,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:28:45,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:28:45,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:28:45,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:28:47,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:28:47,197 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-13 07:28:47,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:47 BoogieIcfgContainer [2021-10-13 07:28:47,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:28:47,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:28:47,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:28:47,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:28:47,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:28:44" (1/3) ... [2021-10-13 07:28:47,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcbe609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:47, skipping insertion in model container [2021-10-13 07:28:47,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:28:45" (2/3) ... [2021-10-13 07:28:47,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcbe609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:28:47, skipping insertion in model container [2021-10-13 07:28:47,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:28:47" (3/3) ... [2021-10-13 07:28:47,209 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.c [2021-10-13 07:28:47,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:28:47,236 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:28:47,306 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:28:47,312 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 [2021-10-13 07:28:47,313 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:28:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:28:47,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:47,329 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:47,330 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:47,336 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-13 07:28:47,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:47,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347001610] [2021-10-13 07:28:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:47,349 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:47,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:47,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:47,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:28:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:47,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:28:47,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:47,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:47,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:47,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347001610] [2021-10-13 07:28:47,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347001610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:47,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:47,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:28:47,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573827402] [2021-10-13 07:28:47,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:28:47,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:47,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:28:47,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:28:47,683 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:28:47,698 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-10-13 07:28:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:28:47,699 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 07:28:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:28:47,707 INFO L225 Difference]: With dead ends: 43 [2021-10-13 07:28:47,707 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 07:28:47,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:28:47,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 07:28:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-13 07:28:47,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-10-13 07:28:47,739 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-10-13 07:28:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:28:47,740 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-10-13 07:28:47,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:28:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-10-13 07:28:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:28:47,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:28:47,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:28:47,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:28:47,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:28:47,961 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:28:47,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:28:47,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-13 07:28:47,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:28:47,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970973460] [2021-10-13 07:28:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:28:47,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:28:47,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:28:47,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:28:47,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:28:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:28:48,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:28:48,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:28:48,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:48,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:28:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:28:53,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:28:53,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970973460] [2021-10-13 07:28:53,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970973460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:28:53,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:28:53,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:28:53,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040243306] [2021-10-13 07:28:53,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:28:53,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:28:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:28:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:28:53,192 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-10-13 07:29:05,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:29:05,141 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-13 07:29:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 07:29:05,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 9 [2021-10-13 07:29:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:29:05,184 INFO L225 Difference]: With dead ends: 42 [2021-10-13 07:29:05,184 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 07:29:05,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7323.7ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:29:05,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 07:29:05,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-10-13 07:29:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) 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) [2021-10-13 07:29:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-13 07:29:05,208 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 9 [2021-10-13 07:29:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:29:05,209 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-13 07:29:05,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-10-13 07:29:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-13 07:29:05,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:29:05,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:29:05,210 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:29:05,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:29:05,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:29:05,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:29:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:29:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 1 times [2021-10-13 07:29:05,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:29:05,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223600796] [2021-10-13 07:29:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:05,423 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:29:05,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:29:05,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:29:05,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:29:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:06,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:29:06,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:10,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:29:30,979 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:29:30,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223600796] [2021-10-13 07:29:30,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223600796] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:30,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1181314059] [2021-10-13 07:29:30,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:30,980 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:29:30,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:29:31,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:29:31,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:29:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:32,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:29:32,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:34,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:29:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 07:29:50,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1181314059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:29:50,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216413696] [2021-10-13 07:29:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:29:50,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:29:50,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:29:50,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:29:50,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:29:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:29:50,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:29:50,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:29:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:29:56,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 07:30:11,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216413696] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:11,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:30:11,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 4, 8, 5] total 11 [2021-10-13 07:30:11,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955487430] [2021-10-13 07:30:11,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:30:11,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:30:11,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:30:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:30:11,683 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:30:36,069 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-10-13 07:30:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:30:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-13 07:30:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:30:36,070 INFO L225 Difference]: With dead ends: 40 [2021-10-13 07:30:36,070 INFO L226 Difference]: Without dead ends: 36 [2021-10-13 07:30:36,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 55816.8ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-10-13 07:30:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-13 07:30:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2021-10-13 07:30:36,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 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) [2021-10-13 07:30:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 07:30:36,084 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-10-13 07:30:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:30:36,084 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 07:30:36,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:30:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 07:30:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:30:36,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:30:36,086 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:30:36,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:30:36,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-13 07:30:36,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:30:36,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:30:36,706 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:30:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:30:36,707 INFO L82 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-10-13 07:30:36,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:30:36,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169960226] [2021-10-13 07:30:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:36,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:30:36,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:30:36,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:30:36,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:30:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:37,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:30:37,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:38,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:51,222 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:30:51,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169960226] [2021-10-13 07:30:51,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169960226] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:51,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1913349822] [2021-10-13 07:30:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:51,224 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:30:51,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:30:51,231 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:30:51,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-13 07:30:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:30:52,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:30:52,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:30:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:52,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:30:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:30:59,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1913349822] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:30:59,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318364612] [2021-10-13 07:30:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:30:59,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:30:59,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:30:59,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:30:59,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 07:31:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:31:00,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 07:31:00,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:01,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:06,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318364612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:31:06,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:31:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 9, 6] total 16 [2021-10-13 07:31:06,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617945233] [2021-10-13 07:31:06,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 07:31:06,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:31:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 07:31:06,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:31:06,699 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:31:52,216 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-10-13 07:31:52,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 07:31:52,235 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 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 17 [2021-10-13 07:31:52,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:31:52,236 INFO L225 Difference]: With dead ends: 44 [2021-10-13 07:31:52,236 INFO L226 Difference]: Without dead ends: 30 [2021-10-13 07:31:52,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 41106.9ms TimeCoverageRelationStatistics Valid=365, Invalid=895, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 07:31:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-13 07:31:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-13 07:31:52,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-10-13 07:31:52,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 17 [2021-10-13 07:31:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:31:52,253 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-10-13 07:31:52,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:31:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-10-13 07:31:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-13 07:31:52,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:31:52,255 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:31:52,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:52,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-10-13 07:31:52,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:31:52,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:31:52,865 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:31:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:31:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1374933420, now seen corresponding path program 2 times [2021-10-13 07:31:52,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:31:52,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126377693] [2021-10-13 07:31:52,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:31:52,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:31:52,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:31:52,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:31:52,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:31:54,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:31:54,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:31:54,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:31:54,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:31:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:55,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:31:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:31:56,597 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:31:56,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126377693] [2021-10-13 07:31:56,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126377693] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:31:56,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1409987344] [2021-10-13 07:31:56,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:31:56,598 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:31:56,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:31:56,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:31:56,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-13 07:32:00,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:32:00,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:32:00,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 07:32:00,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:32:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:32:01,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:33:06,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1409987344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:33:06,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740845540] [2021-10-13 07:33:06,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 07:33:06,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:33:06,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:33:06,979 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:33:06,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 07:33:08,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 07:33:08,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 07:33:08,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:08,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:10,643 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 07:33:10,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 07:33:17,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740845540] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:33:17,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2021-10-13 07:33:17,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9, 10, 10, 8] total 41 [2021-10-13 07:33:17,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11665689] [2021-10-13 07:33:17,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:33:17,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:33:17,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1353, Unknown=3, NotChecked=0, Total=1640 [2021-10-13 07:33:17,910 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:20,844 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-13 07:33:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:33:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 29 [2021-10-13 07:33:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:20,845 INFO L225 Difference]: With dead ends: 30 [2021-10-13 07:33:20,845 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:33:20,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 56917.2ms TimeCoverageRelationStatistics Valid=343, Invalid=1546, Unknown=3, NotChecked=0, Total=1892 [2021-10-13 07:33:20,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:33:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:33:20,848 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) [2021-10-13 07:33:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:33:20,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-10-13 07:33:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:20,848 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:33:20,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:20,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:33:20,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:33:20,852 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:20,853 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:20,853 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:33:20,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:21,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:21,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:21,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:21,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:33:21,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:21,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:21,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:21,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:21,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:33:43,316 WARN L207 SmtUtils]: Spent 21.57 s on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2021-10-13 07:34:04,279 WARN L207 SmtUtils]: Spent 20.95 s on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2021-10-13 07:34:32,205 WARN L207 SmtUtils]: Spent 27.92 s on a formula simplification. DAG size of input: 90 DAG size of output: 55 [2021-10-13 07:34:32,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:34:32,208 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:34:32,208 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:34:32,208 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-13 07:34:32,208 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 07:34:32,208 INFO L857 garLoopResultBuilder]: For program point L7-2(line 7) no Hoare annotation was computed. [2021-10-13 07:34:32,209 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:34:32,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:34:32,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:34:32,210 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse9 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse12 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse2 (bvsge .cse12 (_ bv0 32))) (.cse0 ((_ sign_extend 32) .cse12)) (.cse5 (or .cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse6 (bvsle .cse12 (_ bv2 32))) (.cse7 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse8 (= .cse9 (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ((_ sign_extend 32) (_ bv15 32))) (bvneg (bvmul ((_ sign_extend 32) (_ bv30 32)) ULTIMATE.start_main_~x~0)) (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv10 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvneg ULTIMATE.start_main_~y~0)))) (.cse10 ((_ sign_extend 32) (_ bv1 32)))) (or (and (not (bvslt ULTIMATE.start_main_~c~0 .cse0)) .cse1 .cse2 (forall ((ULTIMATE.start_main_~k~0 (_ BitVec 16))) (let ((.cse4 ((_ sign_extend 32) (_ bv1 32))) (.cse3 ((_ sign_extend 32) ((_ sign_extend 16) ULTIMATE.start_main_~k~0)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse3)) (= (bvadd (bvmul .cse3 .cse4) (bvmul .cse3 ULTIMATE.start_main_~y~0)) (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul (_ bv2 64) (bvmul .cse4 ULTIMATE.start_main_~y~0)) (bvmul .cse4 .cse4))) (bvslt (bvadd .cse4 ULTIMATE.start_main_~c~0) .cse3)))) .cse5 .cse6 .cse7 (= (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul .cse0 ULTIMATE.start_main_~y~0)) .cse8) (and (= .cse9 ULTIMATE.start_main_~y~0) (= .cse9 ULTIMATE.start_main_~c~0) (= .cse9 ULTIMATE.start_main_~x~0) .cse1 .cse2 (not (bvslt (bvadd (bvmul .cse10 (_ bv2 64)) ULTIMATE.start_main_~c~0) .cse0))) (let ((.cse11 (bvadd .cse9 .cse10))) (and (= ULTIMATE.start_main_~y~0 .cse11) (bvslt (bvadd (bvmul .cse10 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~c~0) .cse0) .cse1 (= ULTIMATE.start_main_~c~0 .cse11) .cse5 .cse6 .cse7 .cse8))))) [2021-10-13 07:34:32,210 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-10-13 07:34:32,210 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:34:32,210 INFO L860 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-10-13 07:34:32,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:34:32,211 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-13 07:34:32,211 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:34:32,211 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse12 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse2 (bvsge .cse12 (_ bv0 32))) (.cse4 ((_ sign_extend 32) .cse12)) (.cse8 (or .cse1 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (.cse9 (bvsle .cse12 (_ bv2 32))) (.cse5 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse10 (= .cse0 (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ((_ sign_extend 32) (_ bv15 32))) (bvneg (bvmul ((_ sign_extend 32) (_ bv30 32)) ULTIMATE.start_main_~x~0)) (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv10 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvneg ULTIMATE.start_main_~y~0)))) (.cse3 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= .cse0 ULTIMATE.start_main_~y~0) (= .cse0 ULTIMATE.start_main_~c~0) (= .cse0 ULTIMATE.start_main_~x~0) .cse1 .cse2 (not (bvslt (bvadd (bvmul .cse3 (_ bv2 64)) ULTIMATE.start_main_~c~0) .cse4)) .cse5) (and (not (bvslt ULTIMATE.start_main_~c~0 .cse4)) .cse1 .cse2 (forall ((ULTIMATE.start_main_~k~0 (_ BitVec 16))) (let ((.cse7 ((_ sign_extend 32) (_ bv1 32))) (.cse6 ((_ sign_extend 32) ((_ sign_extend 16) ULTIMATE.start_main_~k~0)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse6)) (= (bvadd (bvmul .cse6 .cse7) (bvmul .cse6 ULTIMATE.start_main_~y~0)) (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul (_ bv2 64) (bvmul .cse7 ULTIMATE.start_main_~y~0)) (bvmul .cse7 .cse7))) (bvslt (bvadd .cse7 ULTIMATE.start_main_~c~0) .cse6)))) .cse8 .cse9 .cse5 (= (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul .cse4 ULTIMATE.start_main_~y~0)) .cse10) (let ((.cse11 (bvadd .cse0 .cse3))) (and (= ULTIMATE.start_main_~y~0 .cse11) (bvslt (bvadd (bvmul .cse3 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~c~0) .cse4) .cse1 (= ULTIMATE.start_main_~c~0 .cse11) .cse8 .cse9 .cse5 .cse10))))) [2021-10-13 07:34:32,212 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:34:32,212 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 07:34:32,212 INFO L857 garLoopResultBuilder]: For program point L6-1(lines 6 8) no Hoare annotation was computed. [2021-10-13 07:34:32,212 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse4 ((_ sign_extend 32) (_ bv0 32))) (.cse1 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))) (or (let ((.cse0 ((_ sign_extend 16) ULTIMATE.start_main_~k~0))) (let ((.cse5 ((_ sign_extend 32) .cse0))) (let ((.cse3 (bvmul .cse5 ULTIMATE.start_main_~y~0)) (.cse2 (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvsge .cse0 (_ bv0 32)) (bvsle .cse0 (_ bv2 32)) .cse1 (= .cse2 .cse3) (= .cse4 (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ((_ sign_extend 32) (_ bv15 32))) (bvneg (bvmul ((_ sign_extend 32) (_ bv30 32)) ULTIMATE.start_main_~x~0)) (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvmul ((_ sign_extend 32) (_ bv10 32)) ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (bvneg ULTIMATE.start_main_~y~0))) (let ((.cse6 ((_ sign_extend 32) (_ bv1 32)))) (or (not (bvslt ULTIMATE.start_main_~c~0 .cse5)) (= (bvadd (bvmul .cse5 .cse6) .cse3) (bvadd .cse2 (bvmul (_ bv2 64) (bvmul .cse6 ULTIMATE.start_main_~y~0)) (bvmul .cse6 .cse6))) (bvslt (bvadd .cse6 ULTIMATE.start_main_~c~0) .cse5))))))) (and (= .cse4 ULTIMATE.start_main_~y~0) (= .cse4 ULTIMATE.start_main_~x~0) .cse1))) [2021-10-13 07:34:32,213 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-13 07:34:32,213 INFO L860 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: true [2021-10-13 07:34:32,218 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:34:32,225 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) [2021-10-13 07:34:32,229 INFO L168 Benchmark]: Toolchain (without parser) took 347287.66 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 15.6 kB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:32,230 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:34:32,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.67 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 35.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:32,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.13 ms. Allocated memory is still 52.4 MB. Free memory was 35.7 MB in the beginning and 34.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:32,232 INFO L168 Benchmark]: Boogie Preprocessor took 40.98 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 32.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:34:32,232 INFO L168 Benchmark]: RCFGBuilder took 1810.91 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 22.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:32,233 INFO L168 Benchmark]: TraceAbstraction took 345026.75 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 22.0 MB in the beginning and 30.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:34:32,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 52.4 MB. Free memory is still 32.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.67 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 35.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.13 ms. Allocated memory is still 52.4 MB. Free memory was 35.7 MB in the beginning and 34.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.98 ms. Allocated memory is still 52.4 MB. Free memory was 34.0 MB in the beginning and 32.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1810.91 ms. Allocated memory is still 52.4 MB. Free memory was 32.8 MB in the beginning and 22.4 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 345026.75 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 22.0 MB in the beginning and 30.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 19.1 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 23 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 344913.7ms, OverallIterations: 5, TraceHistogramMax: 6, EmptinessCheckTime: 10.1ms, AutomataDifference: 84904.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 70730.5ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 64 SDtfs, 191 SDslu, 102 SDs, 0 SdLazy, 183 SolverSat, 176 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 29079.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 417 GetRequests, 311 SyntacticMatches, 7 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 161164.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 17 NumberOfFragments, 555 HoareAnnotationTreeSize, 5 FomulaSimplifications, 313 FormulaSimplificationTreeSizeReduction, 267.2ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 1371 FormulaSimplificationTreeSizeReductionInter, 70455.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 79.2ms SsaConstructionTime, 9670.1ms SatisfiabilityAnalysisTime, 175979.1ms InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 380 ConstructedInterpolants, 6 QuantifiedInterpolants, 4863 SizeOfPredicates, 50 NumberOfNonLiveVariables, 595 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 127/330 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 3 specifications checked. All of them hold - 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. [2021-10-13 07:34:32,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76ef840a-7555-44de-a90d-79ac1580f9a4/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...