./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh --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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb --- 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-2329fc7 [2022-12-14 11:08:00,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:08:00,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:08:00,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:08:00,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:08:00,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:08:00,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:08:00,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:08:00,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:08:00,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:08:00,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:08:00,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:08:00,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:08:00,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:08:00,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:08:00,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:08:00,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:08:00,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:08:00,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:08:00,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:08:00,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:08:00,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:08:00,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:08:00,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:08:00,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:08:00,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:08:00,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:08:00,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:08:00,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:08:00,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:08:00,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:08:00,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:08:00,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:08:00,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:08:00,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:08:00,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:08:00,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:08:00,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:08:00,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:08:00,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:08:00,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:08:00,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:08:00,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:08:00,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:08:00,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:08:00,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:08:00,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:08:00,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:08:00,767 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:08:00,767 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:08:00,767 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:08:00,768 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:08:00,768 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:08:00,769 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:08:00,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:08:00,769 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:08:00,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:08:00,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:08:00,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:08:00,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:08:00,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:08:00,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:08:00,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:00,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:08:00,772 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:08:00,772 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_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2022-12-14 11:08:00,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:08:00,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:08:00,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:08:00,982 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:08:00,982 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:08:00,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-benchs/inv_square-2.c [2022-12-14 11:08:03,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:08:03,747 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:08:03,747 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/sv-benchmarks/c/float-benchs/inv_square-2.c [2022-12-14 11:08:03,753 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data/cdabd60f4/c9d6552bb4b34c9a96ea4d91e329fd83/FLAGd59472d63 [2022-12-14 11:08:03,766 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data/cdabd60f4/c9d6552bb4b34c9a96ea4d91e329fd83 [2022-12-14 11:08:03,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:08:03,769 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:08:03,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:03,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:08:03,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:08:03,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:03,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e09e1ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03, skipping insertion in model container [2022-12-14 11:08:03,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:03,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:08:03,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:08:03,923 WARN L237 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_d7c87643-bb0a-4f7f-acac-0f8df0989412/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2022-12-14 11:08:03,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:03,942 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:08:03,954 WARN L237 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_d7c87643-bb0a-4f7f-acac-0f8df0989412/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2022-12-14 11:08:03,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:03,968 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:08:03,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03 WrapperNode [2022-12-14 11:08:03,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:03,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:03,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:08:03,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:08:03,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:03,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:03,993 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-12-14 11:08:03,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:03,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:08:03,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:08:03,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:08:04,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,005 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:08:04,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:08:04,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:08:04,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:08:04,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (1/1) ... [2022-12-14 11:08:04,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:04,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:04,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:08:04,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:08:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:08:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:08:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:08:04,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:08:04,117 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:08:04,119 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:08:04,199 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:08:04,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:08:04,233 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:08:04,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:04 BoogieIcfgContainer [2022-12-14 11:08:04,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:08:04,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:08:04,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:08:04,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:08:04,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:08:03" (1/3) ... [2022-12-14 11:08:04,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555591a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:04, skipping insertion in model container [2022-12-14 11:08:04,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:03" (2/3) ... [2022-12-14 11:08:04,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555591a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:04, skipping insertion in model container [2022-12-14 11:08:04,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:04" (3/3) ... [2022-12-14 11:08:04,243 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2022-12-14 11:08:04,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:08:04,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:08:04,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:08:04,308 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;@7325cd72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:08:04,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:08:04,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2022-12-14 11:08:04,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 11:08:04,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:04,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 11:08:04,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:04,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:04,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2008011, now seen corresponding path program 1 times [2022-12-14 11:08:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:08:04,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264415625] [2022-12-14 11:08:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:04,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:08:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:08:04,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 11:08:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 11:08:04,451 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 11:08:04,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 11:08:04,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 11:08:04,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:08:04,461 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 11:08:04,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:08:04,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:08:04 BoogieIcfgContainer [2022-12-14 11:08:04,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:08:04,482 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:08:04,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:08:04,483 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:08:04,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:04" (3/4) ... [2022-12-14 11:08:04,486 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 11:08:04,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:08:04,488 INFO L158 Benchmark]: Toolchain (without parser) took 718.36ms. Allocated memory is still 146.8MB. Free memory was 109.8MB in the beginning and 72.0MB in the end (delta: 37.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-14 11:08:04,488 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory was 117.6MB in the beginning and 117.5MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:08:04,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.87ms. Allocated memory is still 146.8MB. Free memory was 109.3MB in the beginning and 99.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:08:04,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.65ms. Allocated memory is still 146.8MB. Free memory was 99.3MB in the beginning and 98.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:08:04,490 INFO L158 Benchmark]: Boogie Preprocessor took 12.86ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 96.7MB in the end (delta: 953.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:08:04,490 INFO L158 Benchmark]: RCFGBuilder took 228.64ms. Allocated memory is still 146.8MB. Free memory was 96.7MB in the beginning and 86.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:08:04,491 INFO L158 Benchmark]: TraceAbstraction took 244.23ms. Allocated memory is still 146.8MB. Free memory was 85.8MB in the beginning and 72.0MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 11:08:04,491 INFO L158 Benchmark]: Witness Printer took 4.39ms. Allocated memory is still 146.8MB. Free memory was 72.0MB in the beginning and 72.0MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:08:04,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory was 117.6MB in the beginning and 117.5MB in the end (delta: 127.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.87ms. Allocated memory is still 146.8MB. Free memory was 109.3MB in the beginning and 99.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.65ms. Allocated memory is still 146.8MB. Free memory was 99.3MB in the beginning and 98.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.86ms. Allocated memory is still 146.8MB. Free memory was 97.7MB in the beginning and 96.7MB in the end (delta: 953.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.64ms. Allocated memory is still 146.8MB. Free memory was 96.7MB in the beginning and 86.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 244.23ms. Allocated memory is still 146.8MB. Free memory was 85.8MB in the beginning and 72.0MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.39ms. Allocated memory is still 146.8MB. Free memory was 72.0MB in the beginning and 72.0MB in the end (delta: 2.7kB). There was no memory consumed. 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 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x <= -1e-20f || x >= 1e-20f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 11:08:04,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh --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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb --- 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-2329fc7 [2022-12-14 11:08:06,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:08:06,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:08:06,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:08:06,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:08:06,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:08:06,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:08:06,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:08:06,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:08:06,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:08:06,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:08:06,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:08:06,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:08:06,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:08:06,117 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:08:06,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:08:06,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:08:06,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:08:06,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:08:06,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:08:06,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:08:06,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:08:06,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:08:06,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:08:06,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:08:06,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:08:06,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:08:06,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:08:06,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:08:06,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:08:06,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:08:06,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:08:06,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:08:06,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:08:06,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:08:06,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:08:06,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:08:06,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:08:06,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:08:06,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:08:06,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:08:06,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 11:08:06,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:08:06,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:08:06,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:08:06,167 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:08:06,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:08:06,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:08:06,168 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:08:06,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:08:06,168 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:08:06,169 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:08:06,169 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:08:06,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:08:06,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:08:06,169 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 11:08:06,170 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:08:06,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:08:06,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:08:06,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:08:06,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:08:06,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 11:08:06,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:08:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:06,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:08:06,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 11:08:06,173 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2022-12-14 11:08:06,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:08:06,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:08:06,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:08:06,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:08:06,409 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:08:06,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-benchs/inv_square-2.c [2022-12-14 11:08:08,998 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:08:09,170 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:08:09,170 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/sv-benchmarks/c/float-benchs/inv_square-2.c [2022-12-14 11:08:09,175 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data/2374d3776/a62665a629c54a0fbb64325a605910d0/FLAGfbe38f0c8 [2022-12-14 11:08:09,557 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/data/2374d3776/a62665a629c54a0fbb64325a605910d0 [2022-12-14 11:08:09,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:08:09,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:08:09,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:09,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:08:09,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:08:09,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd1f59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09, skipping insertion in model container [2022-12-14 11:08:09,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:08:09,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:08:09,696 WARN L237 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_d7c87643-bb0a-4f7f-acac-0f8df0989412/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2022-12-14 11:08:09,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:09,717 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:08:09,727 WARN L237 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_d7c87643-bb0a-4f7f-acac-0f8df0989412/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2022-12-14 11:08:09,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:08:09,741 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:08:09,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09 WrapperNode [2022-12-14 11:08:09,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:08:09,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:09,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:08:09,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:08:09,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,767 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-12-14 11:08:09,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:08:09,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:08:09,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:08:09,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:08:09,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,787 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:08:09,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:08:09,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:08:09,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:08:09,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (1/1) ... [2022-12-14 11:08:09,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:08:09,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:08:09,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:08:09,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:08:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:08:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 11:08:09,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:08:09,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:08:09,906 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:08:09,908 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:08:11,206 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:08:11,212 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:08:11,212 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 11:08:11,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:11 BoogieIcfgContainer [2022-12-14 11:08:11,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:08:11,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:08:11,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:08:11,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:08:11,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:08:09" (1/3) ... [2022-12-14 11:08:11,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e4734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:11, skipping insertion in model container [2022-12-14 11:08:11,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:08:09" (2/3) ... [2022-12-14 11:08:11,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516e4734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:08:11, skipping insertion in model container [2022-12-14 11:08:11,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:11" (3/3) ... [2022-12-14 11:08:11,219 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2022-12-14 11:08:11,232 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:08:11,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:08:11,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:08:11,269 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;@6375e61a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:08:11,269 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:08:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-12-14 11:08:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 11:08:11,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:11,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:11,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:11,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-12-14 11:08:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:08:11,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257149277] [2022-12-14 11:08:11,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:11,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:08:11,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:08:11,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:08:11,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 11:08:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:11,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 11:08:11,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:11,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:11,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:08:11,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:08:11,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257149277] [2022-12-14 11:08:11,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257149277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:11,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:11,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:08:11,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921058037] [2022-12-14 11:08:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:08:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:08:11,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:08:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:08:11,459 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-12-14 11:08:11,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:11,469 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-12-14 11:08:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:08:11,470 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 [2022-12-14 11:08:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:11,475 INFO L225 Difference]: With dead ends: 23 [2022-12-14 11:08:11,475 INFO L226 Difference]: Without dead ends: 8 [2022-12-14 11:08:11,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:08:11,479 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:11,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 11:08:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-12-14 11:08:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-14 11:08:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2022-12-14 11:08:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-12-14 11:08:11,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-12-14 11:08:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:11,500 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-12-14 11:08:11,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-12-14 11:08:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-12-14 11:08:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 11:08:11,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:08:11,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:08:11,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:08:11,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:08:11,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:08:11,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:08:11,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-12-14 11:08:11,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:08:11,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21436929] [2022-12-14 11:08:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:08:11,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:08:11,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:08:11,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:08:11,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 11:08:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:08:11,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 11:08:11,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:08:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:08:13,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:08:13,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:08:13,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21436929] [2022-12-14 11:08:13,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21436929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:08:13,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:08:13,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:08:13,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919750141] [2022-12-14 11:08:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:08:13,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 11:08:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:08:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 11:08:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 11:08:13,115 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-12-14 11:08:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:08:13,323 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-12-14 11:08:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:08:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 [2022-12-14 11:08:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:08:13,323 INFO L225 Difference]: With dead ends: 8 [2022-12-14 11:08:13,323 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 11:08:13,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:08:13,325 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:08:13,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:08:13,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 11:08:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 11:08:13,327 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) [2022-12-14 11:08:13,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 11:08:13,327 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-12-14 11:08:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:08:13,327 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 11:08:13,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2022-12-14 11:08:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 11:08:13,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 11:08:13,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 11:08:13,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 11:08:13,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:08:13,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 11:08:13,543 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 11:08:13,543 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-12-14 11:08:13,544 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-14 11:08:13,544 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-12-14 11:08:13,544 INFO L902 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2022-12-14 11:08:13,544 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 11:08:13,544 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 15 28) the Hoare annotation is: true [2022-12-14 11:08:13,544 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 11:08:13,545 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 11:08:13,545 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-12-14 11:08:13,545 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2022-12-14 11:08:13,545 INFO L899 garLoopResultBuilder]: For program point L22-2(lines 22 26) no Hoare annotation was computed. [2022-12-14 11:08:13,545 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2022-12-14 11:08:13,549 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 11:08:13,551 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 11:08:13,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:08:13 BoogieIcfgContainer [2022-12-14 11:08:13,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 11:08:13,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 11:08:13,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 11:08:13,558 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 11:08:13,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:08:11" (3/4) ... [2022-12-14 11:08:13,561 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 11:08:13,570 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-14 11:08:13,570 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 11:08:13,570 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 11:08:13,570 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 11:08:13,592 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 11:08:13,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 11:08:13,592 INFO L158 Benchmark]: Toolchain (without parser) took 4031.80ms. Allocated memory is still 81.8MB. Free memory was 60.9MB in the beginning and 46.1MB in the end (delta: 14.9MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,593 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory is still 37.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 11:08:13,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.35ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 50.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.73ms. Allocated memory is still 81.8MB. Free memory was 50.0MB in the beginning and 48.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,593 INFO L158 Benchmark]: Boogie Preprocessor took 22.13ms. Allocated memory is still 81.8MB. Free memory was 48.5MB in the beginning and 47.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,594 INFO L158 Benchmark]: RCFGBuilder took 1421.85ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 60.6MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,594 INFO L158 Benchmark]: TraceAbstraction took 2342.33ms. Allocated memory is still 81.8MB. Free memory was 60.1MB in the beginning and 48.7MB in the end (delta: 11.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,594 INFO L158 Benchmark]: Witness Printer took 34.26ms. Allocated memory is still 81.8MB. Free memory was 48.7MB in the beginning and 46.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 11:08:13,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory is still 37.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.35ms. Allocated memory is still 81.8MB. Free memory was 60.7MB in the beginning and 50.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.73ms. Allocated memory is still 81.8MB. Free memory was 50.0MB in the beginning and 48.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.13ms. Allocated memory is still 81.8MB. Free memory was 48.5MB in the beginning and 47.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1421.85ms. Allocated memory is still 81.8MB. Free memory was 47.2MB in the beginning and 60.6MB in the end (delta: -13.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2342.33ms. Allocated memory is still 81.8MB. Free memory was 60.1MB in the beginning and 48.7MB in the end (delta: 11.4MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 34.26ms. Allocated memory is still 81.8MB. Free memory was 48.7MB in the beginning and 46.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. 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: 13]: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 6 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-12-14 11:08:13,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7c87643-bb0a-4f7f-acac-0f8df0989412/bin/utaipan-gh47qXpMRh/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