./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V --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 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:31:01,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:31:01,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:31:01,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:31:01,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:31:01,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:31:01,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:31:01,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:31:01,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:31:01,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:31:01,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:31:01,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:31:01,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:31:01,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:31:01,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:31:01,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:31:01,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:31:01,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:31:01,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:31:01,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:31:01,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:31:01,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:31:01,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:31:01,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:31:01,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:31:01,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:31:01,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:31:01,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:31:01,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:31:01,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:31:01,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:31:01,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:31:01,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:31:01,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:31:01,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:31:01,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:31:01,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:31:01,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:31:01,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:31:01,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:31:01,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:31:01,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:31:01,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:31:01,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:31:01,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:31:01,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:31:01,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:31:01,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:31:01,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:31:01,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:31:01,830 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:31:01,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:31:01,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:31:01,832 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:31:01,832 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:31:01,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:31:01,833 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:31:01,833 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:31:01,833 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:31:01,833 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:31:01,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:31:01,835 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:31:01,835 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:31:01,835 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:31:01,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:31:01,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:31:01,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:31:01,836 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:31:01,837 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:31:01,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:31:01,837 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:31:01,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:31:01,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:31:01,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:31:01,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:01,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:31:01,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:31:01,839 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:31:01,840 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:31:01,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:31:01,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:31:01,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:31:01,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:31:01,841 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 [2021-11-23 03:31:02,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:31:02,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:31:02,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:31:02,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:31:02,266 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:31:02,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-11-23 03:31:02,356 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/4c5e87f9d/a52193e3f4a44236b3a8d4b5b60ee5c8/FLAGde4f81218 [2021-11-23 03:31:02,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:31:02,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-11-23 03:31:03,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/4c5e87f9d/a52193e3f4a44236b3a8d4b5b60ee5c8/FLAGde4f81218 [2021-11-23 03:31:03,367 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/4c5e87f9d/a52193e3f4a44236b3a8d4b5b60ee5c8 [2021-11-23 03:31:03,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:31:03,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:31:03,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:03,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:31:03,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:31:03,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113e6149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03, skipping insertion in model container [2021-11-23 03:31:03,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:31:03,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:31:03,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-11-23 03:31:03,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:03,677 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:31:03,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-11-23 03:31:03,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:03,719 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:31:03,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03 WrapperNode [2021-11-23 03:31:03,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:03,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:03,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:31:03,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:31:03,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,765 INFO L137 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-11-23 03:31:03,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:03,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:31:03,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:31:03,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:31:03,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:31:03,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:31:03,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:31:03,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:31:03,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (1/1) ... [2021-11-23 03:31:03,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:03,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:03,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:31:03,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:31:03,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:31:03,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:31:03,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:31:03,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:31:03,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:31:03,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:31:03,972 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:31:03,974 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:31:04,123 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:31:04,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:31:04,155 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:31:04,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:04 BoogieIcfgContainer [2021-11-23 03:31:04,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:31:04,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:31:04,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:31:04,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:31:04,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:31:03" (1/3) ... [2021-11-23 03:31:04,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b98aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:04, skipping insertion in model container [2021-11-23 03:31:04,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:03" (2/3) ... [2021-11-23 03:31:04,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b98aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:04, skipping insertion in model container [2021-11-23 03:31:04,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:04" (3/3) ... [2021-11-23 03:31:04,188 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-11-23 03:31:04,194 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:31:04,194 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:31:04,251 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:31:04,260 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:31:04,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:31:04,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:31:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 03:31:04,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:04,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 03:31:04,288 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:04,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:04,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1499849464, now seen corresponding path program 1 times [2021-11-23 03:31:04,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952601068] [2021-11-23 03:31:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:04,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:04,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:04,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382589867] [2021-11-23 03:31:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:04,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:04,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:04,466 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:04,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:31:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:31:04,556 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:31:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:31:04,588 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:31:04,592 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:31:04,593 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:31:04,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:04,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 03:31:04,827 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 03:31:04,831 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:31:04,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:31:04 BoogieIcfgContainer [2021-11-23 03:31:04,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:31:04,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:31:04,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:31:04,863 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:31:04,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:04" (3/4) ... [2021-11-23 03:31:04,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:31:04,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:31:04,868 INFO L158 Benchmark]: Toolchain (without parser) took 1491.77ms. Allocated memory is still 104.9MB. Free memory was 67.6MB in the beginning and 51.1MB in the end (delta: 16.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 03:31:04,869 INFO L158 Benchmark]: CDTParser took 0.87ms. Allocated memory is still 104.9MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:31:04,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.33ms. Allocated memory is still 104.9MB. Free memory was 67.4MB in the beginning and 79.9MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:31:04,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.36ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:31:04,878 INFO L158 Benchmark]: Boogie Preprocessor took 28.32ms. Allocated memory is still 104.9MB. Free memory was 78.4MB in the beginning and 77.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:31:04,879 INFO L158 Benchmark]: RCFGBuilder took 362.97ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 66.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:31:04,879 INFO L158 Benchmark]: TraceAbstraction took 701.01ms. Allocated memory is still 104.9MB. Free memory was 66.2MB in the beginning and 51.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 03:31:04,880 INFO L158 Benchmark]: Witness Printer took 4.56ms. Allocated memory is still 104.9MB. Free memory was 51.3MB in the beginning and 51.1MB in the end (delta: 199.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:31:04,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87ms. Allocated memory is still 104.9MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.33ms. Allocated memory is still 104.9MB. Free memory was 67.4MB in the beginning and 79.9MB in the end (delta: -12.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.36ms. Allocated memory is still 104.9MB. Free memory was 79.9MB in the beginning and 78.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.32ms. Allocated memory is still 104.9MB. Free memory was 78.4MB in the beginning and 77.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 362.97ms. Allocated memory is still 104.9MB. Free memory was 77.2MB in the beginning and 66.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 701.01ms. Allocated memory is still 104.9MB. Free memory was 66.2MB in the beginning and 51.6MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.56ms. Allocated memory is still 104.9MB. Free memory was 51.3MB in the beginning and 51.1MB in the end (delta: 199.4kB). 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=20) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=20) [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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 [2021-11-23 03:31:04,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V --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 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:31:07,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:31:07,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:31:07,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:31:07,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:31:07,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:31:07,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:31:07,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:31:07,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:31:07,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:31:07,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:31:07,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:31:07,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:31:07,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:31:07,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:31:07,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:31:07,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:31:07,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:31:07,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:31:07,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:31:07,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:31:07,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:31:07,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:31:07,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:31:07,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:31:07,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:31:07,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:31:07,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:31:07,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:31:07,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:31:07,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:31:07,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:31:07,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:31:07,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:31:07,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:31:07,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:31:07,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:31:07,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:31:07,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:31:07,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:31:07,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:31:07,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 03:31:07,933 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:31:07,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:31:07,934 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:31:07,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:31:07,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:31:07,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:31:07,936 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:31:07,937 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:31:07,937 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:31:07,937 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:31:07,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:31:07,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:31:07,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:31:07,941 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:31:07,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:31:07,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:31:07,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:31:07,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:31:07,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:31:07,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:31:07,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:31:07,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:31:07,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:31:07,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:31:07,945 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:31:07,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:31:07,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:31:07,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:31:07,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:31:07,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:07,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:31:07,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:31:07,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:31:07,948 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:31:07,948 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:31:07,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:31:07,949 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:31:07,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:31:07,950 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_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53908028cfc42f68f62c10378662b57f64149241c563947e258b97b254c402b4 [2021-11-23 03:31:08,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:31:08,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:31:08,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:31:08,493 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:31:08,494 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:31:08,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-11-23 03:31:08,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/96059460b/d7e7250058f24f2b9b292075aa55ed17/FLAG2677c5581 [2021-11-23 03:31:09,302 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:31:09,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c [2021-11-23 03:31:09,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/96059460b/d7e7250058f24f2b9b292075aa55ed17/FLAG2677c5581 [2021-11-23 03:31:09,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/data/96059460b/d7e7250058f24f2b9b292075aa55ed17 [2021-11-23 03:31:09,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:31:09,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:31:09,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:09,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:31:09,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:31:09,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:09" (1/1) ... [2021-11-23 03:31:09,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8c329c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:09, skipping insertion in model container [2021-11-23 03:31:09,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:09" (1/1) ... [2021-11-23 03:31:09,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:31:09,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:31:09,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-11-23 03:31:09,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:10,016 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:31:10,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound20.c[709,722] [2021-11-23 03:31:10,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:10,091 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:31:10,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10 WrapperNode [2021-11-23 03:31:10,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:10,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:10,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:31:10,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:31:10,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,158 INFO L137 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2021-11-23 03:31:10,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:10,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:31:10,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:31:10,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:31:10,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,184 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:31:10,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:31:10,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:31:10,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:31:10,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (1/1) ... [2021-11-23 03:31:10,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:10,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:10,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:31:10,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:31:10,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:31:10,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:31:10,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:31:10,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:31:10,385 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:31:10,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:31:12,965 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:31:12,973 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:31:12,973 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:31:12,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:12 BoogieIcfgContainer [2021-11-23 03:31:12,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:31:12,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:31:12,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:31:12,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:31:12,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:31:09" (1/3) ... [2021-11-23 03:31:12,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436959a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:12, skipping insertion in model container [2021-11-23 03:31:12,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:10" (2/3) ... [2021-11-23 03:31:12,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436959a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:12, skipping insertion in model container [2021-11-23 03:31:12,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:12" (3/3) ... [2021-11-23 03:31:12,987 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound20.c [2021-11-23 03:31:12,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:31:12,994 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:31:13,056 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:31:13,065 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:31:13,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:31:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 03:31:13,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:31:13,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:13,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:13,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2021-11-23 03:31:13,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:31:13,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482914018] [2021-11-23 03:31:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:13,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:31:13,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:31:13,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:31:13,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:31:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:13,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 03:31:13,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:31:13,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:31:13,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:31:13,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482914018] [2021-11-23 03:31:13,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1482914018] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:13,546 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:13,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:31:13,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746259560] [2021-11-23 03:31:13,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:13,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:31:13,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:31:13,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:31:13,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:31:13,618 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:13,656 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2021-11-23 03:31:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:31:13,659 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:31:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:13,668 INFO L225 Difference]: With dead ends: 41 [2021-11-23 03:31:13,669 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 03:31:13,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:31:13,677 INFO L933 BasicCegarLoop]: 27 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, 27 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 [2021-11-23 03:31:13,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:31:13,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 03:31:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 03:31:13,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:31:13,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-11-23 03:31:13,720 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2021-11-23 03:31:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:13,721 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-11-23 03:31:13,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-11-23 03:31:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:31:13,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:13,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:13,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 03:31:13,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:31:13,947 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2021-11-23 03:31:13,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:31:13,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659598688] [2021-11-23 03:31:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:13,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:31:13,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:31:13,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:31:13,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:31:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:14,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:31:14,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:31:14,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:31:23,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:31:23,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659598688] [2021-11-23 03:31:23,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659598688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:23,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:23,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-23 03:31:23,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148512388] [2021-11-23 03:31:23,612 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:23,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:31:23,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:31:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:31:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:31:23,615 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:25,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:31,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:33,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:37,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:39,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:41,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:44,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:48,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:50,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:52,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:54,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:31:54,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:54,867 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-11-23 03:31:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:31:54,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:31:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:54,991 INFO L225 Difference]: With dead ends: 33 [2021-11-23 03:31:54,991 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 03:31:54,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:31:54,994 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:54,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 118 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 28.2s Time] [2021-11-23 03:31:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 03:31:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-11-23 03:31:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-23 03:31:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-23 03:31:55,007 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 9 [2021-11-23 03:31:55,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:55,008 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-23 03:31:55,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 7 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:31:55,009 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-23 03:31:55,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:31:55,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:55,010 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:55,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:55,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:31:55,211 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1170702338, now seen corresponding path program 1 times [2021-11-23 03:31:55,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:31:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670161562] [2021-11-23 03:31:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:55,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:31:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:31:55,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:31:55,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:31:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:55,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 03:31:55,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:31:58,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:04,735 WARN L838 $PredicateComparison]: unable to prove that (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from false [2021-11-23 03:32:06,771 WARN L860 $PredicateComparison]: unable to prove that (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from true [2021-11-23 03:32:43,465 WARN L227 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 03:32:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:32:44,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:32:44,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670161562] [2021-11-23 03:32:44,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670161562] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:32:44,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:32:44,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-11-23 03:32:44,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941884363] [2021-11-23 03:32:44,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:32:44,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:32:44,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:32:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:32:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=99, Unknown=2, NotChecked=20, Total=156 [2021-11-23 03:32:44,567 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:32:45,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:50,203 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32))))) is different from false [2021-11-23 03:32:52,259 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvneg (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (_ bv6 32)) |c_ULTIMATE.start_main_~r~0#1|)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32))))) is different from true [2021-11-23 03:32:56,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:32:58,453 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:00,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:03,267 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:05,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 03:33:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:05,610 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-23 03:33:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:33:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-23 03:33:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:05,728 INFO L225 Difference]: With dead ends: 31 [2021-11-23 03:33:05,728 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 03:33:05,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=41, Invalid=119, Unknown=4, NotChecked=46, Total=210 [2021-11-23 03:33:05,730 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:05,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 61 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 4 Unknown, 27 Unchecked, 15.6s Time] [2021-11-23 03:33:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 03:33:05,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-23 03:33:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-23 03:33:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-23 03:33:05,742 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2021-11-23 03:33:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:05,743 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-23 03:33:05,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:33:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-23 03:33:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:33:05,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:33:05,745 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:33:05,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:05,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:05,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:33:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:33:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1035962748, now seen corresponding path program 1 times [2021-11-23 03:33:05,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:33:05,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666192530] [2021-11-23 03:33:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:33:05,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:33:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:33:05,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:33:05,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:33:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:33:07,607 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:33:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:33:09,909 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 03:33:09,909 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:33:09,911 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:33:09,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:10,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:33:10,116 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-23 03:33:10,119 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:33:10,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:33:10 BoogieIcfgContainer [2021-11-23 03:33:10,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:33:10,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:33:10,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:33:10,146 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:33:10,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:12" (3/4) ... [2021-11-23 03:33:10,149 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 03:33:10,203 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:33:10,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:33:10,204 INFO L158 Benchmark]: Toolchain (without parser) took 120555.41ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 33.4MB in the beginning and 34.5MB in the end (delta: -1.2MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,204 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 37.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:33:10,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.83ms. Allocated memory is still 56.6MB. Free memory was 33.2MB in the beginning and 35.1MB in the end (delta: -1.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.62ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 33.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,206 INFO L158 Benchmark]: Boogie Preprocessor took 39.76ms. Allocated memory is still 56.6MB. Free memory was 33.4MB in the beginning and 32.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,206 INFO L158 Benchmark]: RCFGBuilder took 2776.34ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 32.0MB in the beginning and 51.8MB in the end (delta: -19.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,207 INFO L158 Benchmark]: TraceAbstraction took 117166.28ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 36.6MB in the end (delta: 14.6MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,207 INFO L158 Benchmark]: Witness Printer took 57.83ms. Allocated memory is still 73.4MB. Free memory was 36.6MB in the beginning and 34.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:33:10,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 56.6MB. Free memory was 37.9MB in the beginning and 37.9MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 439.83ms. Allocated memory is still 56.6MB. Free memory was 33.2MB in the beginning and 35.1MB in the end (delta: -1.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.62ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 33.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.76ms. Allocated memory is still 56.6MB. Free memory was 33.4MB in the beginning and 32.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2776.34ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 32.0MB in the beginning and 51.8MB in the end (delta: -19.8MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 117166.28ms. Allocated memory is still 73.4MB. Free memory was 51.2MB in the beginning and 36.6MB in the end (delta: 14.6MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 57.83ms. Allocated memory is still 73.4MB. Free memory was 36.6MB in the beginning and 34.5MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=20) [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=20) [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=0.000007683760486617194, r=1, s=3.25, x=0.000007683760486617194] [L33] COND TRUE 1 VAL [a=0.000007683760486617194, r=1, s=3.25, x=0.000007683760486617194] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [a=0.000007683760486617194, r=1, s=3.25, x=0.000007683760486617194] [L35] CALL __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [a=0.000007683760486617194, r=1, s=3.25, x=0.000007683760486617194] [L36] CALL __VERIFIER_assert((int)(8*r*s - 24*a + 16*r - 12*s + 24*x - 3 == 0)) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 117.1s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 43.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 206 SdHoareTripleChecker+Invalid, 42.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 27 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 65 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 44.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 58.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 SizeOfPredicates, 6 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 2/4 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 proved your program to be incorrect! [2021-11-23 03:33:10,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26551451-d090-4003-af5c-020d334d59f0/bin/utaipan-EQgc7hIp5V/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE