./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs --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 de6f1b0c31f6078d1329908bc6a1fa31b1de3eefc77e75c566f65f8bba6f4e00 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:08:06,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:08:06,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:08:06,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:08:06,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:08:06,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:08:06,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:08:06,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:08:06,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:08:06,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:08:06,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:08:06,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:08:06,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:08:06,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:08:06,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:08:06,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:08:06,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:08:06,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:08:06,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:08:06,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:08:06,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:08:06,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:08:06,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:08:06,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:08:06,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:08:06,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:08:06,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:08:06,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:08:06,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:08:06,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:08:06,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:08:06,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:08:06,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:08:06,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:08:06,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:08:06,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:08:06,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:08:06,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:08:06,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:08:06,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:08:06,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:08:06,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:08:06,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:08:06,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:08:06,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:08:06,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:08:06,718 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:08:06,719 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:08:06,719 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:08:06,719 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:08:06,719 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:08:06,719 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:08:06,719 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:08:06,720 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:08:06,720 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:08:06,720 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:08:06,720 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:08:06,720 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:08:06,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:08:06,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:08:06,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:08:06,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:08:06,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:08:06,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:08:06,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:08:06,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:08:06,723 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:08:06,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:08:06,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:08:06,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:08:06,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:08:06,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:08:06,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:08:06,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:08:06,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:08:06,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:08:06,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:08:06,733 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:08:06,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:08:06,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:08:06,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:08:06,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:08:06,735 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6f1b0c31f6078d1329908bc6a1fa31b1de3eefc77e75c566f65f8bba6f4e00 [2021-11-19 15:08:07,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:08:07,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:08:07,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:08:07,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:08:07,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:08:07,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2021-11-19 15:08:07,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/data/703a1dc47/7afb9c140b52425fa12f8b805221a854/FLAG6d1003fb6 [2021-11-19 15:08:07,717 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:08:07,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c [2021-11-19 15:08:07,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/data/703a1dc47/7afb9c140b52425fa12f8b805221a854/FLAG6d1003fb6 [2021-11-19 15:08:08,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/data/703a1dc47/7afb9c140b52425fa12f8b805221a854 [2021-11-19 15:08:08,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:08:08,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:08:08,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:08:08,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:08:08,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:08:08,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304316d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08, skipping insertion in model container [2021-11-19 15:08:08,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:08:08,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:08:08,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2021-11-19 15:08:08,297 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:08:08,309 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:08:08,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/sv-benchmarks/c/loop-new/gauss_sum.i.v+cfa-reducer.c[1014,1027] [2021-11-19 15:08:08,326 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:08:08,341 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:08:08,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08 WrapperNode [2021-11-19 15:08:08,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:08:08,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:08:08,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:08:08,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:08:08,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,378 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-11-19 15:08:08,379 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:08:08,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:08:08,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:08:08,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:08:08,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:08:08,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:08:08,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:08:08,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:08:08,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (1/1) ... [2021-11-19 15:08:08,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:08:08,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:08:08,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:08:08,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:08:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:08:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:08:08,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:08:08,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:08:08,541 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:08:08,544 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:08:08,708 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:08:08,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:08:08,726 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 15:08:08,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:08 BoogieIcfgContainer [2021-11-19 15:08:08,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:08:08,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:08:08,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:08:08,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:08:08,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:08:08" (1/3) ... [2021-11-19 15:08:08,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be9484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:08:08, skipping insertion in model container [2021-11-19 15:08:08,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:08:08" (2/3) ... [2021-11-19 15:08:08,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be9484b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:08:08, skipping insertion in model container [2021-11-19 15:08:08,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:08" (3/3) ... [2021-11-19 15:08:08,740 INFO L111 eAbstractionObserver]: Analyzing ICFG gauss_sum.i.v+cfa-reducer.c [2021-11-19 15:08:08,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:08:08,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:08:08,807 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:08:08,823 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:08:08,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:08:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 15:08:08,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:08,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 15:08:08,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2021-11-19 15:08:08,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:08:08,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109820460] [2021-11-19 15:08:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:08,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:08:08,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:08:08,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261872663] [2021-11-19 15:08:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:08,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:08:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:08:08,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:08:08,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 15:08:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:09,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:08:09,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:08:09,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:08:09,258 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:08:09,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109820460] [2021-11-19 15:08:09,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:08:09,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261872663] [2021-11-19 15:08:09,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261872663] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:08:09,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:08:09,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:08:09,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028484316] [2021-11-19 15:08:09,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:08:09,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:08:09,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:08:09,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:08:09,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:08:09,304 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:09,357 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-19 15:08:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:08:09,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 15:08:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:09,369 INFO L225 Difference]: With dead ends: 17 [2021-11-19 15:08:09,369 INFO L226 Difference]: Without dead ends: 8 [2021-11-19 15:08:09,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:08:09,378 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:09,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 8 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:08:09,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-19 15:08:09,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-19 15:08:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-19 15:08:09,434 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-19 15:08:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:09,434 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-19 15:08:09,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-19 15:08:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 15:08:09,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:09,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:08:09,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:09,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-19 15:08:09,651 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:09,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:09,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2021-11-19 15:08:09,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:08:09,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826787463] [2021-11-19 15:08:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:09,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:08:09,670 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:08:09,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970401748] [2021-11-19 15:08:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:09,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:08:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:08:09,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:08:09,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 15:08:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:08:09,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 15:08:09,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:08:09,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:08:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:08:09,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:08:09,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826787463] [2021-11-19 15:08:09,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:08:09,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970401748] [2021-11-19 15:08:09,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970401748] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:08:09,994 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [832434082] [2021-11-19 15:08:10,013 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-19 15:08:10,014 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:08:10,018 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:08:10,023 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:08:10,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:08:10,058 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.9 percent of original size [2021-11-19 15:08:10,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-19 15:08:10,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,225 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size [2021-11-19 15:08:10,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-19 15:08:10,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:08:10,331 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-11-19 15:08:10,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 15:08:10,345 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:08:10,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:08:10,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:08:10,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-19 15:08:10,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328426730] [2021-11-19 15:08:10,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 15:08:10,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 15:08:10,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:08:10,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 15:08:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 15:08:10,704 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:08:10,744 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-11-19 15:08:10,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:08:10,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 15:08:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:08:10,746 INFO L225 Difference]: With dead ends: 12 [2021-11-19 15:08:10,746 INFO L226 Difference]: Without dead ends: 9 [2021-11-19 15:08:10,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:08:10,748 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:08:10,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 9 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:08:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-19 15:08:10,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-19 15:08:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-19 15:08:10,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-11-19 15:08:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:08:10,753 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-19 15:08:10,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:08:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-19 15:08:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:08:10,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:08:10,754 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-19 15:08:10,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:08:10,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-19 15:08:10,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:08:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:08:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -529183054, now seen corresponding path program 2 times [2021-11-19 15:08:10,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:08:10,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138518433] [2021-11-19 15:08:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:08:10,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:08:10,979 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:08:10,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733152094] [2021-11-19 15:08:10,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:08:10,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:08:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:08:10,980 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:08:11,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 15:08:11,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 15:08:11,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:08:11,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:08:11,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:08:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:08:11,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:09:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:09:59,987 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:09:59,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138518433] [2021-11-19 15:09:59,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:09:59,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733152094] [2021-11-19 15:09:59,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733152094] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:09:59,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1558342737] [2021-11-19 15:09:59,992 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-19 15:09:59,992 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:09:59,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:09:59,993 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:09:59,993 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:10:00,004 INFO L180 QuantifierPusher]: treesize reduction 8, result has 91.9 percent of original size [2021-11-19 15:10:00,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-19 15:10:00,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:10:00,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-11-19 15:10:00,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:10:00,114 INFO L180 QuantifierPusher]: treesize reduction 24, result has 63.6 percent of original size [2021-11-19 15:10:00,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-19 15:10:00,127 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:10:00,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:10:00,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:10:00,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-11-19 15:10:00,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646663970] [2021-11-19 15:10:00,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 15:10:00,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:10:00,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:10:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:10:00,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:10:00,515 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:10:00,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:10:00,655 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-11-19 15:10:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:10:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 15:10:00,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:10:00,656 INFO L225 Difference]: With dead ends: 10 [2021-11-19 15:10:00,656 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:10:00,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 109.2s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:10:00,658 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:10:00,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2021-11-19 15:10:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:10:00,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:10:00,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:10:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:10:00,660 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-11-19 15:10:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:10:00,660 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:10:00,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:10:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:10:00,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:10:00,663 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:10:00,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:10:00,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:10:00,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 15:10:00,992 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 15:10:00,992 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 59) no Hoare annotation was computed. [2021-11-19 15:10:00,992 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 60) no Hoare annotation was computed. [2021-11-19 15:10:00,992 INFO L854 garLoopResultBuilder]: At program point L38(lines 30 59) the Hoare annotation is: (and (or (<= |ULTIMATE.start_main_~main__i~0#1| |ULTIMATE.start_main_~main__n~0#1|) (= (+ |ULTIMATE.start_main_~main__n~0#1| (* |ULTIMATE.start_main_~main__n~0#1| |ULTIMATE.start_main_~main__n~0#1|)) (* 2 |ULTIMATE.start_main_~main__sum~0#1|))) (forall ((|ULTIMATE.start_main_~main__n~0#1| Int)) (or (= (+ (* 2 |ULTIMATE.start_main_~main__i~0#1|) (* 2 |ULTIMATE.start_main_~main__sum~0#1|)) (+ |ULTIMATE.start_main_~main__n~0#1| (* |ULTIMATE.start_main_~main__n~0#1| |ULTIMATE.start_main_~main__n~0#1|))) (< |ULTIMATE.start_main_~main__n~0#1| |ULTIMATE.start_main_~main__i~0#1|) (<= (+ |ULTIMATE.start_main_~main__i~0#1| 1) |ULTIMATE.start_main_~main__n~0#1|))) (<= 1 |ULTIMATE.start_main_~main__n~0#1|)) [2021-11-19 15:10:00,993 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 15:10:00,993 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 49) no Hoare annotation was computed. [2021-11-19 15:10:00,993 INFO L861 garLoopResultBuilder]: At program point L55(lines 13 61) the Hoare annotation is: true [2021-11-19 15:10:00,993 INFO L858 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2021-11-19 15:10:00,993 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 56) no Hoare annotation was computed. [2021-11-19 15:10:00,995 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-19 15:10:00,997 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 15:10:01,005 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,005 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,006 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,006 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,006 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,012 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 03:10:01 BoogieIcfgContainer [2021-11-19 15:10:01,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 15:10:01,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 15:10:01,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 15:10:01,015 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 15:10:01,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:08:08" (3/4) ... [2021-11-19 15:10:01,019 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 15:10:01,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-19 15:10:01,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 15:10:01,028 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 15:10:01,029 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 15:10:01,058 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 15:10:01,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 15:10:01,059 INFO L158 Benchmark]: Toolchain (without parser) took 112978.61ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 56.3MB in the beginning and 75.7MB in the end (delta: -19.4MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-11-19 15:10:01,060 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:10:01,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.89ms. Allocated memory is still 94.4MB. Free memory was 56.1MB in the beginning and 71.5MB in the end (delta: -15.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:10:01,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.70ms. Allocated memory is still 94.4MB. Free memory was 71.5MB in the beginning and 70.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:10:01,061 INFO L158 Benchmark]: Boogie Preprocessor took 35.47ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 69.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:10:01,061 INFO L158 Benchmark]: RCFGBuilder took 313.39ms. Allocated memory is still 94.4MB. Free memory was 69.1MB in the beginning and 60.2MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:10:01,061 INFO L158 Benchmark]: TraceAbstraction took 112283.24ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 59.7MB in the beginning and 77.8MB in the end (delta: -18.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-11-19 15:10:01,062 INFO L158 Benchmark]: Witness Printer took 43.80ms. Allocated memory is still 115.3MB. Free memory was 77.8MB in the beginning and 75.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:10:01,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 94.4MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.89ms. Allocated memory is still 94.4MB. Free memory was 56.1MB in the beginning and 71.5MB in the end (delta: -15.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.70ms. Allocated memory is still 94.4MB. Free memory was 71.5MB in the beginning and 70.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.47ms. Allocated memory is still 94.4MB. Free memory was 70.1MB in the beginning and 69.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 313.39ms. Allocated memory is still 94.4MB. Free memory was 69.1MB in the beginning and 60.2MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 112283.24ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 59.7MB in the beginning and 77.8MB in the end (delta: -18.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * Witness Printer took 43.80ms. Allocated memory is still 115.3MB. Free memory was 77.8MB in the beginning and 75.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 49]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 112.2s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 10 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 109.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 41 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 109.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 2 QuantifiedInterpolants, 193 SizeOfPredicates, 12 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2021-11-19 15:10:01,071 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,071 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,072 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,072 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,072 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] [2021-11-19 15:10:01,073 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~main__n~0#1,QUANTIFIED] Derived loop invariant: ((main__i <= main__n || main__n + main__n * main__n == 2 * main__sum) && (forall ULTIMATE.start_main_~main__n~0#1 : int :: (2 * main__i + 2 * main__sum == ULTIMATE.start_main_~main__n~0#1 + ULTIMATE.start_main_~main__n~0#1 * ULTIMATE.start_main_~main__n~0#1 || ULTIMATE.start_main_~main__n~0#1 < main__i) || main__i + 1 <= ULTIMATE.start_main_~main__n~0#1)) && 1 <= main__n - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 15:10:01,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7985af26-f50e-47cd-b786-7aab3e3d656a/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE