./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS --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 6835a6a52b399101fa57284de792210b11ef12afe0f3073436fba94237f48f05 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:23:43,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:23:43,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:23:43,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:23:43,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:23:43,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:23:43,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:23:43,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:23:43,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:23:43,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:23:43,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:23:43,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:23:43,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:23:43,765 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:23:43,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:23:43,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:23:43,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:23:43,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:23:43,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:23:43,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:23:43,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:23:43,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:23:43,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:23:43,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:23:43,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:23:43,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:23:43,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:23:43,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:23:43,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:23:43,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:23:43,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:23:43,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:23:43,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:23:43,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:23:43,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:23:43,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:23:43,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:23:43,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:23:43,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:23:43,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:23:43,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:23:43,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:23:43,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:23:43,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:23:43,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:23:43,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:23:43,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:23:43,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:23:43,845 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:23:43,846 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:23:43,846 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:23:43,846 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:23:43,847 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:23:43,847 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:23:43,848 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:23:43,848 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:23:43,848 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:23:43,848 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:23:43,849 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:23:43,849 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:23:43,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:23:43,850 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:23:43,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:23:43,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:23:43,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:23:43,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:23:43,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:23:43,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:23:43,853 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:23:43,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:23:43,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:23:43,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:23:43,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:23:43,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:23:43,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:23:43,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:23:43,855 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:23:43,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:23:43,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:23:43,855 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:23:43,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:23:43,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:23:43,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:23:43,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6835a6a52b399101fa57284de792210b11ef12afe0f3073436fba94237f48f05 [2022-11-19 07:23:44,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:23:44,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:23:44,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:23:44,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:23:44,257 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:23:44,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2022-11-19 07:23:44,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/data/e8f77cc18/ab2936576b9b467685671ee6c099e88f/FLAG4ce46ea2c [2022-11-19 07:23:44,843 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:23:44,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c [2022-11-19 07:23:44,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/data/e8f77cc18/ab2936576b9b467685671ee6c099e88f/FLAG4ce46ea2c [2022-11-19 07:23:45,212 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/data/e8f77cc18/ab2936576b9b467685671ee6c099e88f [2022-11-19 07:23:45,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:23:45,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:23:45,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:23:45,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:23:45,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:23:45,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec8d104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45, skipping insertion in model container [2022-11-19 07:23:45,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:23:45,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:23:45,447 WARN L234 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_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c[458,471] [2022-11-19 07:23:45,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:45,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:23:45,494 WARN L234 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_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound1.c[458,471] [2022-11-19 07:23:45,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:23:45,513 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:23:45,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45 WrapperNode [2022-11-19 07:23:45,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:23:45,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:23:45,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:23:45,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:23:45,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,551 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2022-11-19 07:23:45,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:23:45,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:23:45,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:23:45,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:23:45,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,584 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:23:45,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:23:45,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:23:45,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:23:45,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (1/1) ... [2022-11-19 07:23:45,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:23:45,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:45,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:23:45,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:23:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:23:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:23:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:23:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:23:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:23:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:23:45,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:23:45,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:23:45,898 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:23:45,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:23:45,915 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:23:45,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:23:45 BoogieIcfgContainer [2022-11-19 07:23:45,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:23:45,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:23:45,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:23:45,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:23:45,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:23:45" (1/3) ... [2022-11-19 07:23:45,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1b4960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:23:45, skipping insertion in model container [2022-11-19 07:23:45,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:23:45" (2/3) ... [2022-11-19 07:23:45,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1b4960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:23:45, skipping insertion in model container [2022-11-19 07:23:45,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:23:45" (3/3) ... [2022-11-19 07:23:45,927 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound1.c [2022-11-19 07:23:45,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:23:45,948 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:23:46,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:23:46,022 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47e12e42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:23:46,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:23:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:23:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:23:46,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:46,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:23:46,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:46,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:46,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2138246143, now seen corresponding path program 1 times [2022-11-19 07:23:46,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:46,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443611690] [2022-11-19 07:23:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:46,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:46,231 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443611690] [2022-11-19 07:23:46,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 07:23:46,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471980199] [2022-11-19 07:23:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:46,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:46,239 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:46,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:23:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:46,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:23:46,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:23:46,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:46,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471980199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:46,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:46,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:23:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601879361] [2022-11-19 07:23:46,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:23:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:46,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:23:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:23:46,472 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:46,532 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2022-11-19 07:23:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:23:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 07:23:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:46,547 INFO L225 Difference]: With dead ends: 27 [2022-11-19 07:23:46,547 INFO L226 Difference]: Without dead ends: 12 [2022-11-19 07:23:46,550 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:23:46,554 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:46,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:23:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-19 07:23:46,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-19 07:23:46,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:23:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-19 07:23:46,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2022-11-19 07:23:46,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:46,626 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-19 07:23:46,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-19 07:23:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:23:46,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:46,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:46,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-19 07:23:46,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:46,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1461620770, now seen corresponding path program 1 times [2022-11-19 07:23:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:46,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733324039] [2022-11-19 07:23:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:46,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:46,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733324039] [2022-11-19 07:23:46,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-19 07:23:46,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799581685] [2022-11-19 07:23:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:46,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:46,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:46,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:23:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:47,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:23:47,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:47,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:23:47,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:47,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799581685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:47,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:47,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:23:47,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146014708] [2022-11-19 07:23:47,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:47,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:23:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:23:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:47,089 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:47,133 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-19 07:23:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:23:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:23:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:47,135 INFO L225 Difference]: With dead ends: 21 [2022-11-19 07:23:47,135 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 07:23:47,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:23:47,137 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:47,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:23:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 07:23:47,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-19 07:23:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:23:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-11-19 07:23:47,148 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2022-11-19 07:23:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:47,148 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-11-19 07:23:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-19 07:23:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:23:47,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:47,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:47,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:47,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:47,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:47,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1463408230, now seen corresponding path program 1 times [2022-11-19 07:23:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:47,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583212719] [2022-11-19 07:23:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:47,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:47,386 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:23:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394023322] [2022-11-19 07:23:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:47,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:47,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:47,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:47,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:23:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:47,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:23:47,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:23:47,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:47,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583212719] [2022-11-19 07:23:47,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:23:47,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394023322] [2022-11-19 07:23:47,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394023322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:47,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:47,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:23:47,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658054778] [2022-11-19 07:23:47,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:47,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:23:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:23:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:23:47,539 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:47,624 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-19 07:23:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:23:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 07:23:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:47,626 INFO L225 Difference]: With dead ends: 23 [2022-11-19 07:23:47,626 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 07:23:47,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:23:47,628 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:47,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:23:47,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 07:23:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 07:23:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:23:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-11-19 07:23:47,639 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2022-11-19 07:23:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:47,639 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-11-19 07:23:47,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:23:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-11-19 07:23:47,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:23:47,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:47,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:47,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:47,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1726160663, now seen corresponding path program 1 times [2022-11-19 07:23:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154611345] [2022-11-19 07:23:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:47,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 07:23:47,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859550370] [2022-11-19 07:23:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:47,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:47,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:47,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:47,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:23:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:47,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 07:23:47,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:23:48,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:23:48,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:48,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154611345] [2022-11-19 07:23:48,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 07:23:48,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859550370] [2022-11-19 07:23:48,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859550370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:48,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309538216] [2022-11-19 07:23:48,318 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 07:23:48,318 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:23:48,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:23:48,326 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:23:48,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:23:48,826 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 58 for LOIs [2022-11-19 07:23:48,938 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:23:50,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [309538216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:50,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:23:50,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 6] total 17 [2022-11-19 07:23:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362362964] [2022-11-19 07:23:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:50,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:23:50,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:23:50,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:23:50,479 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:23:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:50,614 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-11-19 07:23:50,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:23:50,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-19 07:23:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:50,622 INFO L225 Difference]: With dead ends: 21 [2022-11-19 07:23:50,622 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:23:50,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-11-19 07:23:50,630 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:50,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:23:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:23:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:23:50,639 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) [2022-11-19 07:23:50,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:23:50,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-19 07:23:50,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:50,640 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:23:50,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:23:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:23:50,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:23:50,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:23:50,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:50,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:50,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:23:51,423 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:23:51,424 INFO L899 garLoopResultBuilder]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2022-11-19 07:23:51,424 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse13 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 32767)) (.cse2 (= 2 (select |#length| 1))) (.cse3 (= (select |#valid| 3) 1)) (.cse4 (= 9 (select |#length| 2))) (.cse5 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| 2) 1)) (.cse8 (= |#NULL.offset| 0)) (.cse9 (= (select .cse13 0) 48)) (.cse10 (= (select .cse13 1) 0)) (.cse11 (< 0 |#StackHeapBarrier|)) (.cse12 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~y~0#1| 1) .cse5 (< |ULTIMATE.start_main_~c~0#1| (+ |ULTIMATE.start_main_~k~0#1| 1)) .cse6 .cse7 .cse8 .cse9 (= ~counter~0 1) .cse10 (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse11 .cse12) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~y~0#1| 0) (= ~counter~0 0) .cse5 (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_main_~x~0#1| 0) .cse10 .cse11 .cse12)))) [2022-11-19 07:23:51,425 INFO L895 garLoopResultBuilder]: At program point L27-4(lines 27 36) the Hoare annotation is: (or (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~k~0#1| 32767) (= |ULTIMATE.start_main_~c~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= 9 (select |#length| 2)) (= |ULTIMATE.start_main_~y~0#1| 1) (= (select |#valid| 1) 1) (< |ULTIMATE.start_main_~c~0#1| (+ |ULTIMATE.start_main_~k~0#1| 1)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (= ~counter~0 2) (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2022-11-19 07:23:51,425 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 07:23:51,425 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~k~0#1| 32767) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= 9 (select |#length| 2)) (= |ULTIMATE.start_main_~y~0#1| 0) (= (select |#valid| 1) 1) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 32768)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= ~counter~0 1) (= |ULTIMATE.start_main_~x~0#1| 0) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-19 07:23:51,426 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-19 07:23:51,426 INFO L902 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: true [2022-11-19 07:23:51,426 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-19 07:23:51,426 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-19 07:23:51,426 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-19 07:23:51,426 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-19 07:23:51,426 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-19 07:23:51,426 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-19 07:23:51,430 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-19 07:23:51,440 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:23:51,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:23:51 BoogieIcfgContainer [2022-11-19 07:23:51,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:23:51,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:23:51,471 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:23:51,471 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:23:51,471 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:23:45" (3/4) ... [2022-11-19 07:23:51,474 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:23:51,479 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-19 07:23:51,482 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-19 07:23:51,482 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 07:23:51,482 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-19 07:23:51,482 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:23:51,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:23:51,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:23:51,516 INFO L158 Benchmark]: Toolchain (without parser) took 6296.38ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 76.8MB in the beginning and 62.9MB in the end (delta: 14.0MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2022-11-19 07:23:51,516 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 77.6MB. Free memory was 36.4MB in the beginning and 36.4MB in the end (delta: 37.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:23:51,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.82ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 86.0MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:23:51,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.75ms. Allocated memory is still 109.1MB. Free memory was 86.0MB in the beginning and 84.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:23:51,518 INFO L158 Benchmark]: Boogie Preprocessor took 33.39ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 83.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:23:51,518 INFO L158 Benchmark]: RCFGBuilder took 330.97ms. Allocated memory is still 109.1MB. Free memory was 83.5MB in the beginning and 73.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:23:51,519 INFO L158 Benchmark]: TraceAbstraction took 5547.35ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 72.4MB in the beginning and 66.0MB in the end (delta: 6.4MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2022-11-19 07:23:51,520 INFO L158 Benchmark]: Witness Printer took 47.41ms. Allocated memory is still 132.1MB. Free memory was 66.0MB in the beginning and 62.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:23:51,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 77.6MB. Free memory was 36.4MB in the beginning and 36.4MB in the end (delta: 37.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.82ms. Allocated memory is still 109.1MB. Free memory was 76.8MB in the beginning and 86.0MB in the end (delta: -9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.75ms. Allocated memory is still 109.1MB. Free memory was 86.0MB in the beginning and 84.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.39ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 83.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 330.97ms. Allocated memory is still 109.1MB. Free memory was 83.5MB in the beginning and 73.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5547.35ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 72.4MB in the beginning and 66.0MB in the end (delta: 6.4MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 47.41ms. Allocated memory is still 132.1MB. Free memory was 66.0MB in the beginning and 62.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 39 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 12 PreInvPairs, 19 NumberOfFragments, 331 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 839 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 3 NumberOfNonLiveVariables, 213 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 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: OVERALL_TIME: 0.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 13, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 18, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 8, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 32, TOOLS_QUANTIFIERELIM_TIME: 0.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 45, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 13, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 82, DAG_COMPRESSION_RETAINED_NODES: 41, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((((((((((((unknown-#length-unknown[3] == 12 && k <= 32767) && c == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 9 == unknown-#length-unknown[2]) && y == 1) && \valid[1] == 1) && c < k + 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && counter == 1) && unknown-#memory_int-unknown[1][1] == 0) && x == y * y) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && k <= 32767) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 9 == unknown-#length-unknown[2]) && y == 0) && counter == 0) && \valid[1] == 1) && 0 <= k + 32768) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && x == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:23:51,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f087dbb-fe5b-4a98-8d6c-44c88fc98b0b/bin/utaipan-I9t0OCRTmS/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