./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:18:54,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:18:54,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:18:54,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:18:54,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:18:54,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:18:54,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:18:54,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:18:54,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:18:54,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:18:54,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:18:54,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:18:54,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:18:54,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:18:54,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:18:54,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:18:54,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:18:54,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:18:54,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:18:54,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:18:54,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:18:54,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:18:54,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:18:54,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:18:54,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:18:54,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:18:54,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:18:54,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:18:54,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:18:54,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:18:54,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:18:54,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:18:54,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:18:54,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:18:54,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:18:54,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:18:54,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:18:54,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:18:54,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:18:54,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:18:54,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:18:54,762 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:18:54,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:18:54,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:18:54,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:18:54,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:18:54,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:18:54,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:18:54,808 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:18:54,809 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:18:54,809 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:18:54,809 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:18:54,811 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:18:54,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:18:54,812 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:18:54,812 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:18:54,812 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:18:54,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:18:54,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:18:54,813 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:18:54,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:18:54,814 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:18:54,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:18:54,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:18:54,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:18:54,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:18:54,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:18:54,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:18:54,817 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:18:54,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:18:54,817 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:18:54,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:18:54,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:18:54,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:18:54,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:18:54,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:18:54,820 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:18:54,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:18:54,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:18:54,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:18:54,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:18:54,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:18:54,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:18:54,822 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_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 [2022-11-19 07:18:55,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:18:55,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:18:55,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:18:55,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:18:55,245 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:18:55,246 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-11-19 07:18:55,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/d665c57ad/988aac5caf77499b9c51e29daa82d183/FLAGf20c39645 [2022-11-19 07:18:55,806 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:18:55,807 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-11-19 07:18:55,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/d665c57ad/988aac5caf77499b9c51e29daa82d183/FLAGf20c39645 [2022-11-19 07:18:56,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/d665c57ad/988aac5caf77499b9c51e29daa82d183 [2022-11-19 07:18:56,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:18:56,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:18:56,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:18:56,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:18:56,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:18:56,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e77e3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56, skipping insertion in model container [2022-11-19 07:18:56,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:18:56,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:18:56,430 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2022-11-19 07:18:56,435 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2022-11-19 07:18:56,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:18:56,486 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:18:56,500 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2022-11-19 07:18:56,501 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2022-11-19 07:18:56,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:18:56,579 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:18:56,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56 WrapperNode [2022-11-19 07:18:56,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:18:56,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:18:56,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:18:56,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:18:56,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,641 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 175 [2022-11-19 07:18:56,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:18:56,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:18:56,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:18:56,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:18:56,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:18:56,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:18:56,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:18:56,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:18:56,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (1/1) ... [2022-11-19 07:18:56,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:18:56,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:18:56,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:18:56,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:18:56,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:18:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 07:18:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 07:18:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:18:56,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:18:56,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:18:56,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:18:56,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:18:56,872 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:18:56,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:18:57,278 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:18:57,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:18:57,618 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:18:57,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:57 BoogieIcfgContainer [2022-11-19 07:18:57,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:18:57,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:18:57,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:18:57,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:18:57,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:18:56" (1/3) ... [2022-11-19 07:18:57,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521db41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:18:57, skipping insertion in model container [2022-11-19 07:18:57,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:18:56" (2/3) ... [2022-11-19 07:18:57,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521db41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:18:57, skipping insertion in model container [2022-11-19 07:18:57,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:57" (3/3) ... [2022-11-19 07:18:57,632 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_5a.c.cil.c [2022-11-19 07:18:57,654 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:18:57,654 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:18:57,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:18:57,716 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;@43fce756, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:18:57,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:18:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:18:57,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 07:18:57,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:18:57,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 07:18:57,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:18:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:18:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash 10002406, now seen corresponding path program 1 times [2022-11-19 07:18:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:18:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618759041] [2022-11-19 07:18:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:18:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:18:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:18:57,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:18:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:18:57,872 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:18:57,874 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:18:57,875 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 07:18:57,877 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 07:18:57,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:18:57,883 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 07:18:57,888 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:18:57,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:18:57 BoogieIcfgContainer [2022-11-19 07:18:57,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:18:57,908 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:18:57,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:18:57,908 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:18:57,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:18:57" (3/4) ... [2022-11-19 07:18:57,912 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:18:57,912 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:18:57,914 INFO L158 Benchmark]: Toolchain (without parser) took 1717.03ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 72.8MB in the beginning and 115.7MB in the end (delta: -42.8MB). Peak memory consumption was 127.6kB. Max. memory is 16.1GB. [2022-11-19 07:18:57,914 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:18:57,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 381.51ms. Allocated memory is still 115.3MB. Free memory was 72.6MB in the beginning and 85.7MB in the end (delta: -13.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 07:18:57,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.29ms. Allocated memory is still 115.3MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:18:57,916 INFO L158 Benchmark]: Boogie Preprocessor took 31.92ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 81.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:18:57,917 INFO L158 Benchmark]: RCFGBuilder took 946.49ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 81.7MB in the beginning and 131.4MB in the end (delta: -49.7MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2022-11-19 07:18:57,918 INFO L158 Benchmark]: TraceAbstraction took 283.06ms. Allocated memory is still 157.3MB. Free memory was 130.3MB in the beginning and 116.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:18:57,918 INFO L158 Benchmark]: Witness Printer took 4.85ms. Allocated memory is still 157.3MB. Free memory was 116.7MB in the beginning and 115.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:18:57,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 381.51ms. Allocated memory is still 115.3MB. Free memory was 72.6MB in the beginning and 85.7MB in the end (delta: -13.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.29ms. Allocated memory is still 115.3MB. Free memory was 85.7MB in the beginning and 83.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.92ms. Allocated memory is still 115.3MB. Free memory was 83.6MB in the beginning and 81.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 946.49ms. Allocated memory was 115.3MB in the beginning and 157.3MB in the end (delta: 41.9MB). Free memory was 81.7MB in the beginning and 131.4MB in the end (delta: -49.7MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * TraceAbstraction took 283.06ms. Allocated memory is still 157.3MB. Free memory was 130.3MB in the beginning and 116.7MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.85ms. Allocated memory is still 157.3MB. Free memory was 116.7MB in the beginning and 115.7MB in the end (delta: 1.1MB). 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 - UnprovableResult [Line: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 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=45occurred 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 [2022-11-19 07:18:57,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:19:00,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:19:00,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:19:00,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:19:00,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:19:00,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:19:00,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:19:00,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:19:00,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:19:00,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:19:00,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:19:00,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:19:00,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:19:00,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:19:00,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:19:00,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:19:00,471 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:19:00,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:19:00,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:19:00,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:19:00,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:19:00,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:19:00,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:19:00,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:19:00,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:19:00,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:19:00,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:19:00,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:19:00,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:19:00,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:19:00,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:19:00,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:19:00,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:19:00,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:19:00,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:19:00,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:19:00,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:19:00,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:19:00,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:19:00,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:19:00,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:19:00,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:19:00,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:19:00,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:19:00,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:19:00,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:19:00,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:19:00,562 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:19:00,563 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:19:00,563 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:19:00,563 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:19:00,563 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:19:00,564 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:19:00,565 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:19:00,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:19:00,566 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:19:00,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:19:00,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:19:00,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:19:00,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:19:00,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:19:00,568 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:19:00,568 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:19:00,568 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:19:00,568 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:19:00,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:19:00,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:19:00,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:19:00,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:19:00,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:19:00,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:19:00,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:19:00,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:19:00,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:19:00,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:19:00,571 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:19:00,571 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:19:00,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:19:00,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:19:00,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:19:00,572 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_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 [2022-11-19 07:19:00,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:19:01,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:19:01,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:19:01,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:19:01,011 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:19:01,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-11-19 07:19:01,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/8ccbe8016/28978f1ca6b74ecfb2e5d3238f481cb5/FLAG964ebe5e1 [2022-11-19 07:19:01,596 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:19:01,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2022-11-19 07:19:01,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/8ccbe8016/28978f1ca6b74ecfb2e5d3238f481cb5/FLAG964ebe5e1 [2022-11-19 07:19:01,972 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/data/8ccbe8016/28978f1ca6b74ecfb2e5d3238f481cb5 [2022-11-19 07:19:01,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:19:01,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:19:01,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:19:01,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:19:01,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:19:01,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:19:01" (1/1) ... [2022-11-19 07:19:01,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d9dc1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:01, skipping insertion in model container [2022-11-19 07:19:01,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:19:01" (1/1) ... [2022-11-19 07:19:02,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:19:02,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:19:02,266 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2022-11-19 07:19:02,273 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2022-11-19 07:19:02,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:02,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:19:02,442 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2022-11-19 07:19:02,451 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2022-11-19 07:19:02,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:19:02,510 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:19:02,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02 WrapperNode [2022-11-19 07:19:02,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:19:02,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:19:02,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:19:02,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:19:02,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,556 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-11-19 07:19:02,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:19:02,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:19:02,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:19:02,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:19:02,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,594 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:19:02,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:19:02,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:19:02,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:19:02,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (1/1) ... [2022-11-19 07:19:02,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:19:02,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:19:02,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:19:02,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:19:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:19:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:19:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-19 07:19:02,680 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-19 07:19:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:19:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:19:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 07:19:02,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 07:19:02,775 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:19:02,778 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:19:05,523 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:19:05,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:19:05,532 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:19:05,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:19:05 BoogieIcfgContainer [2022-11-19 07:19:05,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:19:05,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:19:05,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:19:05,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:19:05,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:19:01" (1/3) ... [2022-11-19 07:19:05,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13efef61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:19:05, skipping insertion in model container [2022-11-19 07:19:05,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:19:02" (2/3) ... [2022-11-19 07:19:05,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13efef61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:19:05, skipping insertion in model container [2022-11-19 07:19:05,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:19:05" (3/3) ... [2022-11-19 07:19:05,545 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_5a.c.cil.c [2022-11-19 07:19:05,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:19:05,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 07:19:05,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:19:05,626 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;@6d7cf0a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:19:05,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 07:19:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 07:19:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:19:05,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:19:05,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:19:05,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:19:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:19:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-19 07:19:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:19:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421201079] [2022-11-19 07:19:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:19:05,658 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 [2022-11-19 07:19:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:19:05,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:19:05,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:19:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:19:06,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:19:06,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:19:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:19:06,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:19:06,220 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:19:06,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421201079] [2022-11-19 07:19:06,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421201079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:19:06,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:19:06,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:19:06,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930140124] [2022-11-19 07:19:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:19:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:19:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:19:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:19:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:19:06,262 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2022-11-19 07:19:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:19:06,292 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-11-19 07:19:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:19:06,295 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 [2022-11-19 07:19:06,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:19:06,302 INFO L225 Difference]: With dead ends: 117 [2022-11-19 07:19:06,303 INFO L226 Difference]: Without dead ends: 52 [2022-11-19 07:19:06,306 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 [2022-11-19 07:19:06,310 INFO L413 NwaCegarLoop]: 82 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, 82 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 [2022-11-19 07:19:06,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:19:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-19 07:19:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-19 07:19:06,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:19:06,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-11-19 07:19:06,379 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-11-19 07:19:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:19:06,379 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-11-19 07:19:06,380 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) [2022-11-19 07:19:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-11-19 07:19:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:19:06,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:19:06,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:19:06,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:19:06,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:19:06,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:19:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:19:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-19 07:19:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:19:06,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [928187025] [2022-11-19 07:19:06,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:19:06,586 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 [2022-11-19 07:19:06,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:19:06,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:19:06,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9de4a18e-7b27-4bf2-9669-89e733d841d0/bin/utaipan-I9t0OCRTmS/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