./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan --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 66d5bcd82161f36b0fe448ef964e4bb1f81ca402 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan --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 66d5bcd82161f36b0fe448ef964e4bb1f81ca402 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-7b2dab5 [2020-12-09 12:15:02,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:15:02,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:15:02,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:15:02,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:15:02,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:15:02,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:15:02,603 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:15:02,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:15:02,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:15:02,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:15:02,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:15:02,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:15:02,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:15:02,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:15:02,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:15:02,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:15:02,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:15:02,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:15:02,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:15:02,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:15:02,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:15:02,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:15:02,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:15:02,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:15:02,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:15:02,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:15:02,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:15:02,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:15:02,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:15:02,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:15:02,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:15:02,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:15:02,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:15:02,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:15:02,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:15:02,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:15:02,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:15:02,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:15:02,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:15:02,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:15:02,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:15:02,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:15:02,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:15:02,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:15:02,654 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:15:02,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:15:02,654 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:15:02,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:15:02,655 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:15:02,656 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:15:02,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:15:02,656 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:15:02,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:15:02,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:15:02,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:15:02,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:15:02,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:15:02,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:15:02,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:15:02,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:15:02,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:15:02,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:15:02,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:15:02,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:15:02,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:15:02,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:15:02,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:15:02,659 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-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d5bcd82161f36b0fe448ef964e4bb1f81ca402 [2020-12-09 12:15:02,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:15:02,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:15:02,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:15:02,846 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:15:02,846 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:15:02,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c [2020-12-09 12:15:02,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/bd40f9b9e/1fb590dff2924812a2a0aee1903f5c6b/FLAGf2f36828e [2020-12-09 12:15:03,253 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:15:03,254 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c [2020-12-09 12:15:03,259 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/bd40f9b9e/1fb590dff2924812a2a0aee1903f5c6b/FLAGf2f36828e [2020-12-09 12:15:03,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/bd40f9b9e/1fb590dff2924812a2a0aee1903f5c6b [2020-12-09 12:15:03,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:15:03,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:15:03,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:15:03,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:15:03,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:15:03,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9261e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03, skipping insertion in model container [2020-12-09 12:15:03,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:15:03,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:15:03,401 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c[520,533] [2020-12-09 12:15:03,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:15:03,422 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:15:03,431 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c[520,533] [2020-12-09 12:15:03,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:15:03,448 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:15:03,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03 WrapperNode [2020-12-09 12:15:03,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:15:03,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:15:03,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:15:03,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:15:03,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:15:03,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:15:03,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:15:03,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:15:03,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... [2020-12-09 12:15:03,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:15:03,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:15:03,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:15:03,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:15:03,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:15:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:15:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:15:03,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:15:03,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:15:03,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:15:03,738 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 12:15:03,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:15:03 BoogieIcfgContainer [2020-12-09 12:15:03,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:15:03,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:15:03,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:15:03,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:15:03,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:15:03" (1/3) ... [2020-12-09 12:15:03,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b17ea82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:15:03, skipping insertion in model container [2020-12-09 12:15:03,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:15:03" (2/3) ... [2020-12-09 12:15:03,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b17ea82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:15:03, skipping insertion in model container [2020-12-09 12:15:03,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:15:03" (3/3) ... [2020-12-09 12:15:03,748 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound50.c [2020-12-09 12:15:03,762 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:15:03,765 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 12:15:03,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 12:15:03,794 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:15:03,794 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:15:03,794 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:15:03,795 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:15:03,795 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:15:03,795 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:15:03,795 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:15:03,795 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:15:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 12:15:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:15:03,815 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:15:03,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:15:03,816 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:15:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:15:03,822 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 12:15:03,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:15:03,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123776759] [2020-12-09 12:15:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:15:03,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:15:03,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:15:03,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123776759] [2020-12-09 12:15:03,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:15:03,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:15:03,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510489938] [2020-12-09 12:15:03,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:15:03,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:15:03,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:15:03,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:15:03,976 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 12:15:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:15:03,992 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 12:15:03,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:15:03,994 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 12:15:03,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:15:04,000 INFO L225 Difference]: With dead ends: 57 [2020-12-09 12:15:04,000 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 12:15:04,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:15:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 12:15:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 12:15:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 12:15:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 12:15:04,026 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 12:15:04,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:15:04,027 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 12:15:04,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:15:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 12:15:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:15:04,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:15:04,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:15:04,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:15:04,028 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:15:04,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:15:04,028 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 12:15:04,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:15:04,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479492863] [2020-12-09 12:15:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:15:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:15:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:15:04,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479492863] [2020-12-09 12:15:04,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:15:04,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:15:04,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823053787] [2020-12-09 12:15:04,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:15:04,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:15:04,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:15:04,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:15:04,119 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-12-09 12:15:04,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:15:04,181 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 12:15:04,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:15:04,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 12:15:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:15:04,182 INFO L225 Difference]: With dead ends: 30 [2020-12-09 12:15:04,182 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 12:15:04,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:15:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 12:15:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 12:15:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 12:15:04,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 12:15:04,187 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-12-09 12:15:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:15:04,187 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 12:15:04,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:15:04,187 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 12:15:04,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 12:15:04,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:15:04,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:15:04,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 12:15:04,188 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:15:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:15:04,189 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2020-12-09 12:15:04,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:15:04,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495526379] [2020-12-09 12:15:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:15:04,200 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 12:15:04,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [554744278] [2020-12-09 12:15:04,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:15:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:15:04,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 12:15:04,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:15:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:15:04,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:15:04,352 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:15:04,352 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:15:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:15:04,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495526379] [2020-12-09 12:15:04,367 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 12:15:04,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554744278] [2020-12-09 12:15:04,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:15:04,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 12:15:04,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440664787] [2020-12-09 12:15:04,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 12:15:04,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:15:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 12:15:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 12:15:04,369 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-12-09 12:15:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:15:04,521 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-12-09 12:15:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 12:15:04,522 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 12:15:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:15:04,523 INFO L225 Difference]: With dead ends: 48 [2020-12-09 12:15:04,523 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 12:15:04,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-12-09 12:15:04,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 12:15:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-12-09 12:15:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 12:15:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 12:15:04,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 7 [2020-12-09 12:15:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:15:04,532 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 12:15:04,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 12:15:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 12:15:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 12:15:04,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:15:04,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 12:15:04,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 12:15:04,735 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:15:04,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:15:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash 874023160, now seen corresponding path program 1 times [2020-12-09 12:15:04,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:15:04,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680642981] [2020-12-09 12:15:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:15:04,781 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 12:15:04,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223941564] [2020-12-09 12:15:04,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:15:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:15:04,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 12:15:04,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:15:04,962 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:15:04,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:15:05,007 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:15:05,007 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:15:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:15:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680642981] [2020-12-09 12:15:20,792 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 12:15:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223941564] [2020-12-09 12:15:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [159704553] [2020-12-09 12:15:20,806 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 12:15:20,806 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 12:15:20,813 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 12:15:20,817 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 12:15:20,817 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 12:15:21,410 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 12:15:21,942 WARN L197 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 12:15:22,409 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 12:15:22,798 WARN L197 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-12-09 12:15:23,162 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-12-09 12:15:23,547 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 12:15:23,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 12:15:23,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 12:15:23,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547051916] [2020-12-09 12:15:23,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 12:15:23,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 12:15:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 12:15:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=338, Unknown=3, NotChecked=0, Total=420 [2020-12-09 12:15:23,548 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 12 states. [2020-12-09 12:15:29,700 WARN L197 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 12:15:35,801 WARN L197 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 12:15:41,859 WARN L197 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 12:17:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:19,419 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-12-09 12:17:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 12:17:19,420 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 12:17:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:19,420 INFO L225 Difference]: With dead ends: 79 [2020-12-09 12:17:19,421 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 12:17:19,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 60.8s TimeCoverageRelationStatistics Valid=184, Invalid=674, Unknown=12, NotChecked=0, Total=870 [2020-12-09 12:17:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 12:17:19,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-12-09 12:17:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 12:17:19,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-09 12:17:19,427 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 17 [2020-12-09 12:17:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:19,428 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-09 12:17:19,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 12:17:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-09 12:17:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 12:17:19,429 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:19,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 12:17:19,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:17:19,630 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:19,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2062983086, now seen corresponding path program 2 times [2020-12-09 12:17:19,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:17:19,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726795502] [2020-12-09 12:17:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:17:19,664 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 12:17:19,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706526633] [2020-12-09 12:17:19,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:17:19,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 12:17:19,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 12:17:19,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 12:17:19,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:19,818 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 12:17:19,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:17:37,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726795502] [2020-12-09 12:17:37,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 12:17:37,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706526633] [2020-12-09 12:17:37,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 12:17:37,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1402891722] [2020-12-09 12:17:37,243 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 12:17:37,243 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 12:17:37,244 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 12:17:37,244 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 12:17:37,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 12:17:37,617 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 12:17:40,122 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 12:17:40,608 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 12:17:41,028 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-12-09 12:17:41,427 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-12-09 12:17:50,533 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 12:17:50,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:50,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 12:17:50,533 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 12:17:50,533 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:17:50,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-09 12:17:50,754 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 12:17:50,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:17:50 BoogieIcfgContainer [2020-12-09 12:17:50,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:17:50,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:17:50,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:17:50,755 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:17:50,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:15:03" (3/4) ... [2020-12-09 12:17:50,759 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:17:50,759 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:17:50,760 INFO L168 Benchmark]: Toolchain (without parser) took 167487.70 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 74.4 MB in the beginning and 37.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 66.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:50,760 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 100.7 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:50,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.94 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 77.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:50,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.90 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 76.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:50,762 INFO L168 Benchmark]: Boogie Preprocessor took 19.18 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:50,763 INFO L168 Benchmark]: RCFGBuilder took 245.17 ms. Allocated memory is still 100.7 MB. Free memory was 74.9 MB in the beginning and 58.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:50,763 INFO L168 Benchmark]: TraceAbstraction took 167012.88 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 58.3 MB in the beginning and 37.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:17:50,764 INFO L168 Benchmark]: Witness Printer took 3.85 ms. Allocated memory is still 132.1 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:17:50,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 100.7 MB. Free memory is still 65.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.94 ms. Allocated memory is still 100.7 MB. Free memory was 74.2 MB in the beginning and 77.6 MB in the end (delta: -3.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.90 ms. Allocated memory is still 100.7 MB. Free memory was 77.6 MB in the beginning and 76.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.18 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 245.17 ms. Allocated memory is still 100.7 MB. Free memory was 74.9 MB in the beginning and 58.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 167012.88 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 58.3 MB in the beginning and 37.7 MB in the end (delta: 20.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.85 ms. Allocated memory is still 132.1 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<50 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<50 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<50 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<50 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<50 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 166.9s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 116.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 189 SDslu, 62 SDs, 0 SdLazy, 161 SolverSat, 165 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 72.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 61.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 7620 SizeOfPredicates, 12 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:17:52,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:17:52,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:17:52,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:17:52,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:17:52,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:17:52,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:17:52,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:17:52,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:17:52,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:17:52,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:17:52,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:17:52,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:17:52,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:17:52,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:17:52,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:17:52,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:17:52,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:17:52,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:17:52,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:17:52,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:17:52,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:17:52,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:17:52,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:17:52,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:17:52,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:17:52,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:17:52,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:17:52,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:17:52,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:17:52,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:17:52,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:17:52,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:17:52,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:17:52,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:17:52,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:17:52,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:17:52,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:17:52,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:17:52,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:17:52,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:17:52,339 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:17:52,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:17:52,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:17:52,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:17:52,358 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:17:52,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:17:52,358 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:17:52,358 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:17:52,358 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:17:52,359 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:17:52,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:17:52,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:17:52,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:17:52,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:17:52,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:17:52,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:17:52,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:17:52,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:17:52,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:17:52,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:17:52,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:17:52,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:17:52,366 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:17:52,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:17:52,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:17:52,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:17:52,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:17:52,367 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-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d5bcd82161f36b0fe448ef964e4bb1f81ca402 [2020-12-09 12:17:52,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:17:52,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:17:52,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:17:52,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:17:52,631 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:17:52,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c [2020-12-09 12:17:52,673 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/e3bdae4ce/7b00cc0c2fd443a787a4ffec777c9dd7/FLAG0bced85aa [2020-12-09 12:17:53,070 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:17:53,071 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c [2020-12-09 12:17:53,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/e3bdae4ce/7b00cc0c2fd443a787a4ffec777c9dd7/FLAG0bced85aa [2020-12-09 12:17:53,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/data/e3bdae4ce/7b00cc0c2fd443a787a4ffec777c9dd7 [2020-12-09 12:17:53,087 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:17:53,088 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:17:53,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:17:53,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:17:53,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:17:53,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64ed43e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53, skipping insertion in model container [2020-12-09 12:17:53,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:17:53,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:17:53,202 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c[520,533] [2020-12-09 12:17:53,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:17:53,222 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:17:53,231 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound50.c[520,533] [2020-12-09 12:17:53,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:17:53,258 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:17:53,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53 WrapperNode [2020-12-09 12:17:53,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:17:53,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:17:53,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:17:53,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:17:53,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:17:53,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:17:53,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:17:53,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:17:53,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... [2020-12-09 12:17:53,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:17:53,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:17:53,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:17:53,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:17:53,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:17:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:17:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:17:53,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:17:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:17:53,805 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:17:53,806 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 12:17:53,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:53 BoogieIcfgContainer [2020-12-09 12:17:53,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:17:53,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:17:53,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:17:53,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:17:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:17:53" (1/3) ... [2020-12-09 12:17:53,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cb7973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:17:53, skipping insertion in model container [2020-12-09 12:17:53,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:17:53" (2/3) ... [2020-12-09 12:17:53,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cb7973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:17:53, skipping insertion in model container [2020-12-09 12:17:53,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:17:53" (3/3) ... [2020-12-09 12:17:53,813 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound50.c [2020-12-09 12:17:53,822 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:17:53,824 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 12:17:53,831 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 12:17:53,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:17:53,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:17:53,851 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:17:53,851 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:17:53,851 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:17:53,851 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:17:53,851 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:17:53,851 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:17:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 12:17:53,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 12:17:53,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:53,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 12:17:53,866 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:53,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:53,870 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 12:17:53,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:53,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453822554] [2020-12-09 12:17:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 12:17:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:53,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 12:17:53,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:53,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:53,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453822554] [2020-12-09 12:17:53,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:53,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 12:17:53,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120015849] [2020-12-09 12:17:53,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:17:53,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:17:53,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:17:53,956 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 12:17:53,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:53,969 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 12:17:53,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:17:53,970 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 12:17:53,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:53,975 INFO L225 Difference]: With dead ends: 62 [2020-12-09 12:17:53,975 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 12:17:53,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:17:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 12:17:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 12:17:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:17:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 12:17:54,001 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 12:17:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:54,001 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 12:17:54,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:17:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 12:17:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 12:17:54,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:54,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 12:17:54,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:17:54,202 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:54,203 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 12:17:54,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:54,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221568458] [2020-12-09 12:17:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 12:17:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:54,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 12:17:54,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:54,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:54,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221568458] [2020-12-09 12:17:54,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:54,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:17:54,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743912127] [2020-12-09 12:17:54,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:17:54,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:54,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:17:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:17:54,291 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-09 12:17:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:54,690 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 12:17:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:17:54,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 12:17:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:54,697 INFO L225 Difference]: With dead ends: 54 [2020-12-09 12:17:54,697 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 12:17:54,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:17:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 12:17:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 12:17:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 12:17:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 12:17:54,703 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 12:17:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:54,703 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 12:17:54,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:17:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 12:17:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 12:17:54,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:54,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:54,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:17:54,906 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:54,908 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 12:17:54,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:54,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541744103] [2020-12-09 12:17:54,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 12:17:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:55,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 12:17:55,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:55,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:55,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541744103] [2020-12-09 12:17:55,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:55,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:17:55,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663961565] [2020-12-09 12:17:55,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:17:55,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:55,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:17:55,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:17:55,041 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-12-09 12:17:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:55,437 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-12-09 12:17:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:17:55,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 12:17:55,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:55,439 INFO L225 Difference]: With dead ends: 50 [2020-12-09 12:17:55,439 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 12:17:55,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:17:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 12:17:55,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 12:17:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 12:17:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-09 12:17:55,444 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-12-09 12:17:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:55,444 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-09 12:17:55,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:17:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-09 12:17:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 12:17:55,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:55,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:55,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:17:55,646 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 12:17:55,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:55,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570458844] [2020-12-09 12:17:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 12:17:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:55,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 12:17:55,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:55,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:17:55,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570458844] [2020-12-09 12:17:55,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:17:55,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 12:17:55,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488143337] [2020-12-09 12:17:55,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:17:55,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:55,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:17:55,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:17:55,782 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-09 12:17:56,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:56,270 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-09 12:17:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:17:56,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 12:17:56,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:56,272 INFO L225 Difference]: With dead ends: 50 [2020-12-09 12:17:56,272 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 12:17:56,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:17:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 12:17:56,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 12:17:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 12:17:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 12:17:56,276 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-12-09 12:17:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:56,276 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 12:17:56,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:17:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 12:17:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 12:17:56,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:56,277 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:56,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 12:17:56,479 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:56,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:56,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-09 12:17:56,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:56,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752501297] [2020-12-09 12:17:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 12:17:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:56,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:17:56,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:56,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:17:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:17:56,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752501297] [2020-12-09 12:17:56,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1773091849] [2020-12-09 12:17:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:17:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:56,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:17:56,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:56,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:17:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:17:56,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361981680] [2020-12-09 12:17:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:17:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:57,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 12:17:57,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:57,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:17:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:57,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 12:17:57,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 12:17:57,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750789112] [2020-12-09 12:17:57,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 12:17:57,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:17:57,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 12:17:57,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 12:17:57,269 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-12-09 12:17:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:17:58,056 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-09 12:17:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 12:17:58,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 12:17:58,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:17:58,058 INFO L225 Difference]: With dead ends: 58 [2020-12-09 12:17:58,058 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 12:17:58,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-09 12:17:58,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 12:17:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2020-12-09 12:17:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 12:17:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-09 12:17:58,063 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 14 [2020-12-09 12:17:58,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:17:58,064 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-09 12:17:58,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 12:17:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-09 12:17:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 12:17:58,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:17:58,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:17:58,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:17:58,667 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:17:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:17:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-09 12:17:58,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:17:58,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070959676] [2020-12-09 12:17:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 12:17:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:17:58,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 12:17:58,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:17:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:17:58,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:17:59,663 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 12:18:00,569 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 12:18:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:18:00,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070959676] [2020-12-09 12:18:00,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1097028396] [2020-12-09 12:18:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:18:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:18:00,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 12:18:00,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:18:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:18:00,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:18:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:18:00,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535760269] [2020-12-09 12:18:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:18:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:18:01,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 12:18:01,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:18:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:18:01,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:18:02,031 WARN L197 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 12:18:02,040 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:18:02,040 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:18:05,044 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 12:18:11,865 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 12:18:20,759 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 12:18:20,765 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:18:20,765 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:18:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 12:18:23,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 12:18:23,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 8] total 15 [2020-12-09 12:18:23,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611108281] [2020-12-09 12:18:23,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 12:18:23,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:18:23,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 12:18:23,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2020-12-09 12:18:23,581 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 15 states. [2020-12-09 12:18:34,932 WARN L197 SmtUtils]: Spent 9.17 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 12:18:49,040 WARN L197 SmtUtils]: Spent 8.77 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 12:19:04,328 WARN L197 SmtUtils]: Spent 9.18 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 12:19:27,898 WARN L197 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 12:19:55,970 WARN L197 SmtUtils]: Spent 12.37 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 12:20:09,227 WARN L197 SmtUtils]: Spent 8.36 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 12:20:26,549 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 12:20:46,104 WARN L197 SmtUtils]: Spent 8.39 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 12:20:59,860 WARN L197 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 12:21:19,117 WARN L197 SmtUtils]: Spent 10.40 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 12:21:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:21:25,436 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-12-09 12:21:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 12:21:25,444 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-12-09 12:21:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:21:25,444 INFO L225 Difference]: With dead ends: 75 [2020-12-09 12:21:25,444 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 12:21:25,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 132.3s TimeCoverageRelationStatistics Valid=217, Invalid=409, Unknown=24, NotChecked=0, Total=650 [2020-12-09 12:21:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 12:21:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2020-12-09 12:21:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 12:21:25,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 12:21:25,451 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 16 [2020-12-09 12:21:25,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:21:25,451 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 12:21:25,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 12:21:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 12:21:25,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 12:21:25,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:21:25,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-09 12:21:26,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:21:26,055 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:21:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:21:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-09 12:21:26,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:21:26,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673167093] [2020-12-09 12:21:26,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 12:21:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:21:26,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 12:21:26,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:21:26,403 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:21:26,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:21:27,308 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 12:21:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 12:21:28,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673167093] [2020-12-09 12:21:28,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302763957] [2020-12-09 12:21:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:21:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:21:28,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 12:21:28,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:21:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:21:28,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:21:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 12:21:30,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080460639] [2020-12-09 12:21:30,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:21:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:21:30,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 12:21:30,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:21:31,022 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-09 12:21:31,328 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 12:21:31,535 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-12-09 12:21:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:21:31,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:21:32,756 WARN L197 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 12:21:32,760 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:21:32,760 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:21:38,193 WARN L197 SmtUtils]: Spent 3.37 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 12:21:43,707 WARN L197 SmtUtils]: Spent 3.23 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 12:21:43,711 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:21:43,712 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:21:45,855 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 12:21:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:21:45,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 12:21:45,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 4, 6, 4, 11] total 19 [2020-12-09 12:21:45,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979929979] [2020-12-09 12:21:45,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 12:21:45,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:21:45,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 12:21:45,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=209, Unknown=1, NotChecked=32, Total=342 [2020-12-09 12:21:45,882 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-12-09 12:21:47,483 WARN L197 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 12:22:08,127 WARN L197 SmtUtils]: Spent 9.80 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 12:22:14,235 WARN L197 SmtUtils]: Spent 4.18 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 12:22:18,980 WARN L197 SmtUtils]: Spent 3.32 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 12:22:24,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:22:24,091 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-12-09 12:22:24,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 12:22:24,092 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-09 12:22:24,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:22:24,092 INFO L225 Difference]: With dead ends: 44 [2020-12-09 12:22:24,092 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 12:22:24,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 46.2s TimeCoverageRelationStatistics Valid=147, Invalid=316, Unknown=3, NotChecked=40, Total=506 [2020-12-09 12:22:24,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 12:22:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-12-09 12:22:24,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 12:22:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-12-09 12:22:24,098 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-12-09 12:22:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:22:24,098 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-12-09 12:22:24,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 12:22:24,098 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-12-09 12:22:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 12:22:24,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:22:24,099 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:22:24,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 12:22:24,702 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:22:24,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:22:24,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2020-12-09 12:22:24,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:22:24,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094008531] [2020-12-09 12:22:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 12:22:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:22:24,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:22:24,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:22:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:22:25,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:22:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:22:25,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094008531] [2020-12-09 12:22:25,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1345621813] [2020-12-09 12:22:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 12:22:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:22:25,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:22:25,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:22:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:22:25,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:22:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:22:25,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862454994] [2020-12-09 12:22:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7ebcd0e4-6f93-43d7-8de2-e109c24468e8/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:22:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:22:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 12:22:25,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:22:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:22:27,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 12:22:29,282 WARN L197 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 12:22:30,944 WARN L197 SmtUtils]: Spent 532.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 12:22:30,948 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:22:30,948 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:22:38,541 WARN L197 SmtUtils]: Spent 2.46 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 12:22:48,293 WARN L197 SmtUtils]: Spent 4.78 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 12:22:48,299 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 12:22:48,299 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 12:22:50,558 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 12:22:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 12:22:50,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 12:22:50,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 5, 5, 11] total 25 [2020-12-09 12:22:50,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860719192] [2020-12-09 12:22:50,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 12:22:50,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:22:50,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 12:22:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2020-12-09 12:22:50,582 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-12-09 12:22:52,779 WARN L197 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 12:23:12,465 WARN L197 SmtUtils]: Spent 9.43 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 12:23:20,012 WARN L197 SmtUtils]: Spent 3.69 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 12:23:29,226 WARN L197 SmtUtils]: Spent 3.51 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 12:23:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:23:30,618 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-09 12:23:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 12:23:30,628 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-09 12:23:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:23:30,628 INFO L225 Difference]: With dead ends: 28 [2020-12-09 12:23:30,628 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:23:30,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 57.1s TimeCoverageRelationStatistics Valid=155, Invalid=602, Unknown=3, NotChecked=52, Total=812 [2020-12-09 12:23:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:23:30,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:23:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:23:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:23:30,629 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-09 12:23:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:23:30,629 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:23:30,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 12:23:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:23:30,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:23:31,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 12:23:31,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:24:04,932 WARN L197 SmtUtils]: Spent 33.58 s on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-12-09 12:24:33,781 WARN L197 SmtUtils]: Spent 28.85 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-12-09 12:24:56,755 WARN L197 SmtUtils]: Spent 22.97 s on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-12-09 12:25:36,496 WARN L197 SmtUtils]: Spent 39.74 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 12:25:59,233 WARN L197 SmtUtils]: Spent 22.74 s on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-12-09 12:26:36,646 WARN L197 SmtUtils]: Spent 37.41 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 12:26:36,648 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 12:26:36,648 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 12:26:36,649 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 12:26:36,649 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 12:26:36,649 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 12:26:36,649 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 12:26:36,649 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-09 12:26:36,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 12:26:36,654 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.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:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2020-12-09 12:26:36,656 INFO L168 Benchmark]: Toolchain (without parser) took 523568.26 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.0 MB in the beginning and 22.2 MB in the end (delta: 17.8 MB). Peak memory consumption was 37.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:26:36,657 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:26:36,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.34 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 44.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:26:36,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.25 ms. Allocated memory is still 60.8 MB. Free memory was 44.8 MB in the beginning and 43.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:26:36,658 INFO L168 Benchmark]: Boogie Preprocessor took 18.49 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:26:36,658 INFO L168 Benchmark]: RCFGBuilder took 501.46 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 61.3 MB in the end (delta: -19.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:26:36,659 INFO L168 Benchmark]: TraceAbstraction took 522847.43 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 22.2 MB in the end (delta: 38.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:26:36,661 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.34 ms. Allocated memory is still 60.8 MB. Free memory was 39.8 MB in the beginning and 44.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.25 ms. Allocated memory is still 60.8 MB. Free memory was 44.8 MB in the beginning and 43.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.49 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.46 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 61.3 MB in the end (delta: -19.4 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 522847.43 ms. Allocated memory is still 79.7 MB. Free memory was 60.8 MB in the beginning and 22.2 MB in the end (delta: 38.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 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. Received shutdown request...