./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:39:16,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:39:16,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:39:16,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:39:16,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:39:16,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:39:16,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:39:16,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:39:16,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:39:16,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:39:16,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:39:16,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:39:16,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:39:16,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:39:16,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:39:16,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:39:16,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:39:16,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:39:16,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:39:16,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:39:16,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:39:16,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:39:16,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:39:16,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:39:16,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:39:16,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:39:16,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:39:16,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:39:16,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:39:16,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:39:16,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:39:16,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:39:16,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:39:16,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:39:16,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:39:16,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:39:16,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:39:16,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:39:16,686 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:39:16,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:39:16,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:39:16,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:39:16,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:39:16,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:39:16,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:39:16,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:39:16,741 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:39:16,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:39:16,741 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:39:16,741 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:39:16,742 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:39:16,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:39:16,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:39:16,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:39:16,744 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:39:16,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:39:16,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:39:16,745 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:39:16,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:39:16,746 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:39:16,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:39:16,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:39:16,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:39:16,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:39:16,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:39:16,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:39:16,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:39:16,748 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:39:16,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:39:16,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:39:16,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:39:16,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:39:16,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:39:16,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:16,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:39:16,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:39:16,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:39:16,756 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:39:16,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:39:16,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:39:16,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:39:16,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:39:16,757 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 [2021-11-19 13:39:17,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:39:17,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:39:17,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:39:17,045 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:39:17,045 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:39:17,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2021-11-19 13:39:17,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/afc3ed606/193bc57208684e81920842d029ecc204/FLAG3beb5fe2d [2021-11-19 13:39:17,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:39:17,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2021-11-19 13:39:17,645 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/afc3ed606/193bc57208684e81920842d029ecc204/FLAG3beb5fe2d [2021-11-19 13:39:18,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/afc3ed606/193bc57208684e81920842d029ecc204 [2021-11-19 13:39:18,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:39:18,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:39:18,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:18,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:39:18,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:39:18,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa7eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18, skipping insertion in model container [2021-11-19 13:39:18,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:39:18,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:39:18,337 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2021-11-19 13:39:18,343 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2021-11-19 13:39:18,428 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:18,437 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:39:18,468 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2021-11-19 13:39:18,471 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2021-11-19 13:39:18,509 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:18,537 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:39:18,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18 WrapperNode [2021-11-19 13:39:18,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:18,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:18,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:39:18,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:39:18,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,600 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-11-19 13:39:18,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:18,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:39:18,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:39:18,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:39:18,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:39:18,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:39:18,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:39:18,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:39:18,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (1/1) ... [2021-11-19 13:39:18,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:18,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:18,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:39:18,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:39:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:39:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 13:39:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 13:39:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:39:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:39:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:39:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:39:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:39:18,849 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:39:18,851 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:39:19,088 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:39:19,255 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:39:19,256 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:39:19,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:19 BoogieIcfgContainer [2021-11-19 13:39:19,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:39:19,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:39:19,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:39:19,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:39:19,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:39:18" (1/3) ... [2021-11-19 13:39:19,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17301f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:19, skipping insertion in model container [2021-11-19 13:39:19,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:18" (2/3) ... [2021-11-19 13:39:19,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17301f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:19, skipping insertion in model container [2021-11-19 13:39:19,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:19" (3/3) ... [2021-11-19 13:39:19,280 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_5a.c.cil.c [2021-11-19 13:39:19,288 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:39:19,289 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:39:19,340 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:39:19,348 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:39:19,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:39:19,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 13:39:19,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 13:39:19,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:19,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 13:39:19,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:19,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:19,381 INFO L85 PathProgramCache]: Analyzing trace with hash 7146571, now seen corresponding path program 1 times [2021-11-19 13:39:19,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:19,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699744763] [2021-11-19 13:39:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:19,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:39:19,478 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 13:39:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 13:39:19,516 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 13:39:19,518 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 13:39:19,519 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 13:39:19,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 13:39:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:39:19,527 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-19 13:39:19,530 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:39:19,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:39:19 BoogieIcfgContainer [2021-11-19 13:39:19,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:39:19,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:39:19,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:39:19,551 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:39:19,552 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:19" (3/4) ... [2021-11-19 13:39:19,555 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 13:39:19,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:39:19,556 INFO L158 Benchmark]: Toolchain (without parser) took 1532.41ms. Allocated memory is still 121.6MB. Free memory was 84.4MB in the beginning and 58.5MB in the end (delta: 25.9MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2021-11-19 13:39:19,557 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory was 94.6MB in the beginning and 94.6MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:39:19,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 509.18ms. Allocated memory is still 121.6MB. Free memory was 84.2MB in the beginning and 93.2MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:39:19,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.72ms. Allocated memory is still 121.6MB. Free memory was 92.6MB in the beginning and 91.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:39:19,559 INFO L158 Benchmark]: Boogie Preprocessor took 31.37ms. Allocated memory is still 121.6MB. Free memory was 91.1MB in the beginning and 89.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:39:19,560 INFO L158 Benchmark]: RCFGBuilder took 631.38ms. Allocated memory is still 121.6MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 13:39:19,561 INFO L158 Benchmark]: TraceAbstraction took 282.38ms. Allocated memory is still 121.6MB. Free memory was 72.2MB in the beginning and 59.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 13:39:19,561 INFO L158 Benchmark]: Witness Printer took 4.19ms. Allocated memory is still 121.6MB. Free memory was 59.1MB in the beginning and 58.5MB in the end (delta: 589.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:39:19,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory was 94.6MB in the beginning and 94.6MB in the end (delta: 26.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 509.18ms. Allocated memory is still 121.6MB. Free memory was 84.2MB in the beginning and 93.2MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.72ms. Allocated memory is still 121.6MB. Free memory was 92.6MB in the beginning and 91.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.37ms. Allocated memory is still 121.6MB. Free memory was 91.1MB in the beginning and 89.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 631.38ms. Allocated memory is still 121.6MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 282.38ms. Allocated memory is still 121.6MB. Free memory was 72.2MB in the beginning and 59.1MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.19ms. Allocated memory is still 121.6MB. Free memory was 59.1MB in the beginning and 58.5MB in the end (delta: 589.9kB). 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: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 13:39:19,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:39:22,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:39:22,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:39:22,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:39:22,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:39:22,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:39:22,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:39:22,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:39:22,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:39:22,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:39:22,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:39:22,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:39:22,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:39:22,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:39:22,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:39:22,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:39:22,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:39:22,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:39:22,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:39:22,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:39:22,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:39:22,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:39:22,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:39:22,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:39:22,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:39:22,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:39:22,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:39:22,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:39:22,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:39:22,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:39:22,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:39:22,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:39:22,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:39:22,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:39:22,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:39:22,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:39:22,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:39:22,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:39:22,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:39:22,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:39:22,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:39:22,337 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:39:22,386 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:39:22,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:39:22,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:39:22,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:39:22,388 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:39:22,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:39:22,389 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:39:22,389 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:39:22,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:39:22,390 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:39:22,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:39:22,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:39:22,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:39:22,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:39:22,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:39:22,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:39:22,394 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:39:22,394 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:39:22,394 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:39:22,394 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:39:22,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:39:22,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:39:22,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:39:22,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:39:22,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:39:22,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:39:22,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:39:22,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:22,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:39:22,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:39:22,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:39:22,397 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:39:22,398 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:39:22,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:39:22,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:39:22,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:39:22,399 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50d504012f389a6140cc9010c73b2ef8b99f486d5ac03bfa640c9832c20fe9d8 [2021-11-19 13:39:22,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:39:22,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:39:22,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:39:22,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:39:22,835 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:39:22,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2021-11-19 13:39:22,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/ed8d51f4b/4606b578abe449e8911721e30828dd0a/FLAG13feffb9b [2021-11-19 13:39:23,607 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:39:23,607 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c [2021-11-19 13:39:23,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/ed8d51f4b/4606b578abe449e8911721e30828dd0a/FLAG13feffb9b [2021-11-19 13:39:23,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/data/ed8d51f4b/4606b578abe449e8911721e30828dd0a [2021-11-19 13:39:23,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:39:23,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:39:23,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:23,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:39:23,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:39:23,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:23" (1/1) ... [2021-11-19 13:39:23,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbdc591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:23, skipping insertion in model container [2021-11-19 13:39:23,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:23" (1/1) ... [2021-11-19 13:39:23,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:39:23,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:39:24,131 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2021-11-19 13:39:24,136 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2021-11-19 13:39:24,205 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:24,217 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:39:24,233 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[1999,2012] [2021-11-19 13:39:24,235 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_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/sv-benchmarks/c/combinations/square_4+soft_float_5a.c.cil.c[2368,2381] [2021-11-19 13:39:24,272 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:24,300 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:39:24,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24 WrapperNode [2021-11-19 13:39:24,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:24,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:24,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:39:24,303 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:39:24,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,352 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-11-19 13:39:24,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:24,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:39:24,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:39:24,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:39:24,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:39:24,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:39:24,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:39:24,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:39:24,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (1/1) ... [2021-11-19 13:39:24,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:24,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:39:24,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:39:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:39:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:39:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-19 13:39:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-19 13:39:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:39:24,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:39:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:39:24,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:39:24,568 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:39:24,571 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:39:27,056 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:39:27,065 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:39:27,066 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 13:39:27,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:27 BoogieIcfgContainer [2021-11-19 13:39:27,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:39:27,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:39:27,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:39:27,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:39:27,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:39:23" (1/3) ... [2021-11-19 13:39:27,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5a440a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:27, skipping insertion in model container [2021-11-19 13:39:27,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:24" (2/3) ... [2021-11-19 13:39:27,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5a440a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:27, skipping insertion in model container [2021-11-19 13:39:27,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:27" (3/3) ... [2021-11-19 13:39:27,078 INFO L111 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_5a.c.cil.c [2021-11-19 13:39:27,083 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:39:27,083 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:39:27,148 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:39:27,155 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:39:27,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:39:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 13:39:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:39:27,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:27,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:27,186 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:27,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-19 13:39:27,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:27,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995014493] [2021-11-19 13:39:27,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:27,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:27,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:27,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:27,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:39:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:27,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:39:27,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:28,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:28,077 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:28,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995014493] [2021-11-19 13:39:28,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995014493] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:28,079 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:28,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:39:28,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314444040] [2021-11-19 13:39:28,084 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:28,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:39:28,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:39:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:39:28,135 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:28,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:28,192 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-11-19 13:39:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:39:28,196 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 13:39:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:28,209 INFO L225 Difference]: With dead ends: 117 [2021-11-19 13:39:28,210 INFO L226 Difference]: Without dead ends: 52 [2021-11-19 13:39:28,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:39:28,222 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:28,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:39:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-19 13:39:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-19 13:39:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 13:39:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-19 13:39:28,299 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-11-19 13:39:28,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:28,300 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-19 13:39:28,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:28,301 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-19 13:39:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 13:39:28,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:28,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:28,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:39:28,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:28,526 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:28,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:28,527 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-19 13:39:28,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:28,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919463937] [2021-11-19 13:39:28,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:28,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:28,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:28,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:28,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:47:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:47:56,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:47:56,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:48:12,063 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 13:49:02,473 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from false [2021-11-19 13:49:04,531 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))) (or (not (fp.geq .cse0 (_ +zero 8 24))) (not (fp.lt .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse1)))) is different from true [2021-11-19 13:49:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:49:04,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:49:15,244 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-11-19 13:49:17,319 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-11-19 13:49:32,151 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse0 (_ +zero 8 24))))) is different from false [2021-11-19 13:49:34,240 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse0 (_ +zero 8 24))))) is different from true [2021-11-19 13:50:18,592 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse1 (_ +zero 8 24))))))) is different from false [2021-11-19 13:50:20,662 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse1 (_ +zero 8 24))))))) is different from true [2021-11-19 13:51:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:51:01,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:01,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919463937] [2021-11-19 13:51:01,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919463937] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:51:01,815 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:51:01,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-19 13:51:01,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937827441] [2021-11-19 13:51:01,815 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:01,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:51:01,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:01,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:51:01,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=9, NotChecked=60, Total=110 [2021-11-19 13:51:01,818 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:51:03,889 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse1 (_ +zero 8 24))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 13:51:05,983 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main1_~IN~0#1_4| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (or (not (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_4| .cse0)) (not (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_4| (_ +zero 8 24))) (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|) |v_ULTIMATE.start_main1_~IN~0#1_4|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse1 (_ +zero 8 24))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-19 13:51:08,050 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (or .cse0 (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse1 (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse3 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))) (.cse4 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse2))) (or (and .cse3 .cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse0 (or (not .cse3) (not .cse4))))))) is different from false [2021-11-19 13:51:10,126 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse2 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (or .cse0 (let ((.cse1 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse2 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse1 (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse3 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))) (.cse4 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse2))) (or (and .cse3 .cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32))) (and .cse0 (or (not .cse3) (not .cse4))))))) is different from true [2021-11-19 13:51:12,197 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse0 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2021-11-19 13:51:14,274 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse1 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|) |c_ULTIMATE.start_main1_~IN~0#1|)))) (and (fp.lt .cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq .cse0 (_ +zero 8 24)) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse1) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-19 13:51:16,353 WARN L838 $PredicateComparison]: unable to prove that (and (fp.lt |c_ULTIMATE.start_main1_~result~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 34961.0 25000.0))) (fp.geq |c_ULTIMATE.start_main1_~result~0#1| (_ +zero 8 24)) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= |c_ULTIMATE.start_main1_~result~0#1| (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 13:51:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:16,386 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2021-11-19 13:51:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:51:16,387 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 13:51:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:16,388 INFO L225 Difference]: With dead ends: 52 [2021-11-19 13:51:16,389 INFO L226 Difference]: Without dead ends: 47 [2021-11-19 13:51:16,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=29, Invalid=21, Unknown=16, NotChecked=144, Total=210 [2021-11-19 13:51:16,391 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:16,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 316 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 261 Unchecked, 0.0s Time] [2021-11-19 13:51:16,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-19 13:51:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-19 13:51:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 13:51:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2021-11-19 13:51:16,402 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2021-11-19 13:51:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:16,402 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2021-11-19 13:51:16,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:51:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2021-11-19 13:51:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:51:16,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:16,405 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:16,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:16,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:16,618 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:16,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1370969986, now seen corresponding path program 1 times [2021-11-19 13:51:16,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:16,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467581160] [2021-11-19 13:51:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:16,620 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:16,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:16,621 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:16,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:51:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:51:16,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:16,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:17,294 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:17,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467581160] [2021-11-19 13:51:17,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467581160] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:51:17,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:51:17,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 13:51:17,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174380582] [2021-11-19 13:51:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:17,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:51:17,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:51:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:51:17,296 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:17,571 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2021-11-19 13:51:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:51:17,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-11-19 13:51:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:17,575 INFO L225 Difference]: With dead ends: 104 [2021-11-19 13:51:17,575 INFO L226 Difference]: Without dead ends: 61 [2021-11-19 13:51:17,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:51:17,578 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:17,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:51:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-19 13:51:17,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2021-11-19 13:51:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-19 13:51:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2021-11-19 13:51:17,592 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2021-11-19 13:51:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:17,592 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2021-11-19 13:51:17,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2021-11-19 13:51:17,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 13:51:17,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:17,595 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:17,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 13:51:17,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:17,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:17,809 INFO L85 PathProgramCache]: Analyzing trace with hash -14997806, now seen corresponding path program 1 times [2021-11-19 13:51:17,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:17,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486998226] [2021-11-19 13:51:17,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:17,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:17,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:17,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:51:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:17,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:51:17,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:18,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:18,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:18,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486998226] [2021-11-19 13:51:18,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486998226] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:51:18,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:51:18,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 13:51:18,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876910408] [2021-11-19 13:51:18,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:18,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:51:18,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:51:18,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:51:18,580 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:18,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:18,805 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2021-11-19 13:51:18,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:51:18,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2021-11-19 13:51:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:18,808 INFO L225 Difference]: With dead ends: 108 [2021-11-19 13:51:18,808 INFO L226 Difference]: Without dead ends: 64 [2021-11-19 13:51:18,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:51:18,812 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:18,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:51:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-19 13:51:18,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-11-19 13:51:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:51:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2021-11-19 13:51:18,823 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2021-11-19 13:51:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:18,824 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2021-11-19 13:51:18,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2021-11-19 13:51:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 13:51:18,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:18,827 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:18,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:19,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:19,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1638472845, now seen corresponding path program 1 times [2021-11-19 13:51:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:19,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1863590543] [2021-11-19 13:51:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:19,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:19,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:19,033 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:19,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:51:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:19,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:51:19,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:19,354 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:19,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:19,704 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:19,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1863590543] [2021-11-19 13:51:19,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1863590543] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:51:19,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:51:19,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 13:51:19,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980980753] [2021-11-19 13:51:19,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:19,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:51:19,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:51:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:51:19,707 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:19,972 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2021-11-19 13:51:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:51:19,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2021-11-19 13:51:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:19,974 INFO L225 Difference]: With dead ends: 117 [2021-11-19 13:51:19,975 INFO L226 Difference]: Without dead ends: 68 [2021-11-19 13:51:19,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:51:19,977 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:19,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 153 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:51:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-19 13:51:19,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2021-11-19 13:51:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:51:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2021-11-19 13:51:19,988 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 47 [2021-11-19 13:51:19,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:19,989 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2021-11-19 13:51:19,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:19,989 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2021-11-19 13:51:19,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-19 13:51:19,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:19,992 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:20,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:20,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:20,198 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:20,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:20,199 INFO L85 PathProgramCache]: Analyzing trace with hash 388661875, now seen corresponding path program 1 times [2021-11-19 13:51:20,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:20,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196396796] [2021-11-19 13:51:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:20,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:20,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:20,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:20,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:51:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:20,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:51:20,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:20,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:20,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:21,128 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:21,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196396796] [2021-11-19 13:51:21,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196396796] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:51:21,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:51:21,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-19 13:51:21,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748398367] [2021-11-19 13:51:21,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:21,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:51:21,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:21,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:51:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:51:21,130 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:21,583 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2021-11-19 13:51:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:51:21,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-11-19 13:51:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:21,585 INFO L225 Difference]: With dead ends: 125 [2021-11-19 13:51:21,585 INFO L226 Difference]: Without dead ends: 75 [2021-11-19 13:51:21,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:51:21,587 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:21,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:51:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-19 13:51:21,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-11-19 13:51:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:51:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2021-11-19 13:51:21,614 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 48 [2021-11-19 13:51:21,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:21,615 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2021-11-19 13:51:21,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 13:51:21,616 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2021-11-19 13:51:21,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-19 13:51:21,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:21,622 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:21,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:21,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:21,835 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash 933318672, now seen corresponding path program 1 times [2021-11-19 13:51:21,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:21,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551897691] [2021-11-19 13:51:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:21,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:21,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:21,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:21,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:51:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:21,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:51:21,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:22,256 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:22,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:22,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:22,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551897691] [2021-11-19 13:51:22,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551897691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:22,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1895179369] [2021-11-19 13:51:22,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:22,828 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:22,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:22,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:22,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-19 13:51:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:22,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 13:51:22,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 13:51:23,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 13:51:23,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1895179369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:51:23,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:51:23,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-19 13:51:23,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975117652] [2021-11-19 13:51:23,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:23,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:51:23,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:23,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:51:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:51:23,356 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:23,378 INFO L93 Difference]: Finished difference Result 79 states and 110 transitions. [2021-11-19 13:51:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:51:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2021-11-19 13:51:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:23,380 INFO L225 Difference]: With dead ends: 79 [2021-11-19 13:51:23,380 INFO L226 Difference]: Without dead ends: 59 [2021-11-19 13:51:23,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:51:23,382 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:23,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:51:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-19 13:51:23,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-19 13:51:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.36) internal successors, (68), 51 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:51:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2021-11-19 13:51:23,400 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 49 [2021-11-19 13:51:23,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:23,401 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2021-11-19 13:51:23,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2021-11-19 13:51:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 13:51:23,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:23,408 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:23,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:23,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:23,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:23,812 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:23,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1543994934, now seen corresponding path program 1 times [2021-11-19 13:51:23,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:23,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759979917] [2021-11-19 13:51:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:23,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:23,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:23,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:23,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:51:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:23,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:51:23,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:24,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:24,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:24,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:24,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:24,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759979917] [2021-11-19 13:51:24,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759979917] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:24,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [267491015] [2021-11-19 13:51:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:24,826 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:24,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:24,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 13:51:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:24,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:24,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 13:51:25,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:25,531 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-19 13:51:25,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [267491015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:51:25,531 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:51:25,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 12 [2021-11-19 13:51:25,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545459203] [2021-11-19 13:51:25,532 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:25,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:51:25,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:51:25,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:51:25,534 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:25,633 INFO L93 Difference]: Finished difference Result 80 states and 110 transitions. [2021-11-19 13:51:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:51:25,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-11-19 13:51:25,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:25,635 INFO L225 Difference]: With dead ends: 80 [2021-11-19 13:51:25,635 INFO L226 Difference]: Without dead ends: 59 [2021-11-19 13:51:25,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:51:25,636 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 64 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:25,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:51:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-19 13:51:25,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-19 13:51:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.34) internal successors, (67), 51 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 13:51:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2021-11-19 13:51:25,644 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 51 [2021-11-19 13:51:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:25,644 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2021-11-19 13:51:25,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:25,645 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2021-11-19 13:51:25,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 13:51:25,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:25,646 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:25,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:25,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:26,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:26,054 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2130800948, now seen corresponding path program 1 times [2021-11-19 13:51:26,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:26,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633043164] [2021-11-19 13:51:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:26,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:26,056 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:26,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:51:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:26,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:51:26,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:26,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:26,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:26,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633043164] [2021-11-19 13:51:26,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633043164] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:26,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420458536] [2021-11-19 13:51:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:26,945 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:26,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:26,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:26,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 13:51:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:27,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:51:27,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:51:27,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:51:27,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [420458536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:51:27,859 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:51:27,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5, 5] total 13 [2021-11-19 13:51:27,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274628021] [2021-11-19 13:51:27,860 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:27,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:51:27,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:51:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:51:27,861 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:28,235 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2021-11-19 13:51:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:51:28,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-11-19 13:51:28,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:28,237 INFO L225 Difference]: With dead ends: 104 [2021-11-19 13:51:28,237 INFO L226 Difference]: Without dead ends: 86 [2021-11-19 13:51:28,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:51:28,238 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 31 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:28,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 335 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:51:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-19 13:51:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-11-19 13:51:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 61 states have (on average 1.278688524590164) internal successors, (78), 63 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:51:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2021-11-19 13:51:28,252 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 51 [2021-11-19 13:51:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:28,253 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2021-11-19 13:51:28,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2021-11-19 13:51:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-19 13:51:28,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:28,255 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:28,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:28,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:28,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:28,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:28,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1771139338, now seen corresponding path program 1 times [2021-11-19 13:51:28,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:28,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652285505] [2021-11-19 13:51:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:28,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:28,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:28,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:28,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:51:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:28,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:51:28,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:29,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:29,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:29,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652285505] [2021-11-19 13:51:29,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652285505] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:29,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1123436270] [2021-11-19 13:51:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:29,545 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:29,546 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:29,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 13:51:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:29,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:29,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:51:30,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:51:30,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1123436270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:30,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993873316] [2021-11-19 13:51:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:30,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:30,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:51:30,453 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:51:30,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-19 13:51:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:30,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:51:30,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:51:31,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993873316] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:31,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:51:31,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 6, 6, 6] total 12 [2021-11-19 13:51:31,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32694072] [2021-11-19 13:51:31,075 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:51:31,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:51:31,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:51:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:51:31,076 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:51:32,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:32,703 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2021-11-19 13:51:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:51:32,704 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 51 [2021-11-19 13:51:32,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:32,706 INFO L225 Difference]: With dead ends: 172 [2021-11-19 13:51:32,706 INFO L226 Difference]: Without dead ends: 108 [2021-11-19 13:51:32,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:51:32,708 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 74 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:32,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 409 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:51:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-19 13:51:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 80. [2021-11-19 13:51:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 71 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:51:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2021-11-19 13:51:32,724 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 51 [2021-11-19 13:51:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:32,725 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2021-11-19 13:51:32,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 11 states have internal predecessors, (71), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:51:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2021-11-19 13:51:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 13:51:32,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:32,727 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:32,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-19 13:51:32,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:33,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:33,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:33,340 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash 482568913, now seen corresponding path program 1 times [2021-11-19 13:51:33,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:33,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714682784] [2021-11-19 13:51:33,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:33,341 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:33,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:33,341 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:33,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:51:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:33,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:33,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:33,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:34,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:34,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714682784] [2021-11-19 13:51:34,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714682784] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:34,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1304771605] [2021-11-19 13:51:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:34,407 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:34,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:34,410 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:34,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-19 13:51:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:34,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:51:34,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 13:51:34,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 13:51:34,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1304771605] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:51:34,949 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:51:34,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 6] total 13 [2021-11-19 13:51:34,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989152193] [2021-11-19 13:51:34,949 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:34,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:51:34,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:51:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:51:34,951 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:35,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:35,152 INFO L93 Difference]: Finished difference Result 93 states and 121 transitions. [2021-11-19 13:51:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:51:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-19 13:51:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:35,154 INFO L225 Difference]: With dead ends: 93 [2021-11-19 13:51:35,154 INFO L226 Difference]: Without dead ends: 87 [2021-11-19 13:51:35,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:51:35,156 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:35,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:51:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-19 13:51:35,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2021-11-19 13:51:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 76 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:51:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 113 transitions. [2021-11-19 13:51:35,167 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 113 transitions. Word has length 55 [2021-11-19 13:51:35,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:35,167 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 113 transitions. [2021-11-19 13:51:35,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:35,168 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 113 transitions. [2021-11-19 13:51:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 13:51:35,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:35,169 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:35,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 13:51:35,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:35,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:35,581 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:35,582 INFO L85 PathProgramCache]: Analyzing trace with hash 539827215, now seen corresponding path program 1 times [2021-11-19 13:51:35,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:35,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143288596] [2021-11-19 13:51:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:35,582 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:35,583 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:35,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:51:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:35,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:35,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:35,979 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:35,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:36,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:36,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143288596] [2021-11-19 13:51:36,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143288596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:36,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1162889180] [2021-11-19 13:51:36,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:36,581 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:36,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:36,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:36,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 13:51:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:36,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:36,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:36,918 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:36,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:37,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1162889180] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:37,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557159642] [2021-11-19 13:51:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:37,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:37,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:51:37,301 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:51:37,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 13:51:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:37,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:51:37,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 13:51:37,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-19 13:51:38,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557159642] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:51:38,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2021-11-19 13:51:38,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6, 6, 8] total 17 [2021-11-19 13:51:38,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484675559] [2021-11-19 13:51:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:51:38,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:51:38,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:51:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:51:38,305 INFO L87 Difference]: Start difference. First operand 85 states and 113 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:38,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:38,517 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2021-11-19 13:51:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:51:38,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-11-19 13:51:38,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:38,519 INFO L225 Difference]: With dead ends: 91 [2021-11-19 13:51:38,519 INFO L226 Difference]: Without dead ends: 73 [2021-11-19 13:51:38,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:51:38,521 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:38,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 299 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:51:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-19 13:51:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-19 13:51:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 65 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-19 13:51:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 95 transitions. [2021-11-19 13:51:38,531 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 95 transitions. Word has length 55 [2021-11-19 13:51:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:38,531 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 95 transitions. [2021-11-19 13:51:38,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 13:51:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 95 transitions. [2021-11-19 13:51:38,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:51:38,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:38,533 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:38,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:38,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:38,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-11-19 13:51:39,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:39,139 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:39,139 INFO L85 PathProgramCache]: Analyzing trace with hash -979005146, now seen corresponding path program 1 times [2021-11-19 13:51:39,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:39,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977576217] [2021-11-19 13:51:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:39,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:39,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:39,141 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:39,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:51:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:39,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:51:39,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:51:39,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 13:51:40,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:40,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977576217] [2021-11-19 13:51:40,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977576217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:40,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [111196443] [2021-11-19 13:51:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:40,303 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:40,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:40,304 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:40,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 13:51:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:40,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:51:40,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 13:51:41,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 13:51:41,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [111196443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:41,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741150144] [2021-11-19 13:51:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:41,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:41,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:51:41,419 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:51:41,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 13:51:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:51:41,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:41,688 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 13:51:41,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-19 13:51:42,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741150144] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:42,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:51:42,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 16 [2021-11-19 13:51:42,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414715220] [2021-11-19 13:51:42,036 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:51:42,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:51:42,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:51:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:51:42,038 INFO L87 Difference]: Start difference. First operand 73 states and 95 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 13:51:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:46,138 INFO L93 Difference]: Finished difference Result 180 states and 238 transitions. [2021-11-19 13:51:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 13:51:46,139 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2021-11-19 13:51:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:46,140 INFO L225 Difference]: With dead ends: 180 [2021-11-19 13:51:46,141 INFO L226 Difference]: Without dead ends: 93 [2021-11-19 13:51:46,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=294, Invalid=1112, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 13:51:46,143 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 130 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:46,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 459 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 13:51:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-19 13:51:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-11-19 13:51:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.265625) internal successors, (81), 66 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-19 13:51:46,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-11-19 13:51:46,151 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 60 [2021-11-19 13:51:46,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:46,152 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-11-19 13:51:46,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-19 13:51:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-11-19 13:51:46,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:51:46,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:51:46,154 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:46,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:46,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:46,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-19 13:51:46,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:46,756 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:51:46,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:51:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1446076250, now seen corresponding path program 1 times [2021-11-19 13:51:46,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:51:46,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864058182] [2021-11-19 13:51:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:46,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:51:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:51:46,758 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:51:46,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:51:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:51:46,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 13:51:47,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 13:51:48,601 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:51:48,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864058182] [2021-11-19 13:51:48,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864058182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:48,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [767218260] [2021-11-19 13:51:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:48,603 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:51:48,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:51:48,609 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:51:48,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 13:51:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:48,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:51:48,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:51:49,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:51:50,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [767218260] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:50,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815822888] [2021-11-19 13:51:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:51:50,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:51:50,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:51:50,460 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:51:50,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-19 13:51:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:51:50,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:51:50,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:51:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:51:50,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:51:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-19 13:51:51,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815822888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:51:51,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:51:51,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-19 13:51:51,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455892957] [2021-11-19 13:51:51,396 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:51:51,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 13:51:51,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:51:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 13:51:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:51:51,398 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:51:55,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:51:55,278 INFO L93 Difference]: Finished difference Result 185 states and 242 transitions. [2021-11-19 13:51:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 13:51:55,280 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2021-11-19 13:51:55,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:51:55,280 INFO L225 Difference]: With dead ends: 185 [2021-11-19 13:51:55,281 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 13:51:55,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 403 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=250, Invalid=872, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:51:55,283 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 172 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:51:55,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 534 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-19 13:51:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 13:51:55,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 13:51:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:51:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 13:51:55,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2021-11-19 13:51:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:51:55,286 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 13:51:55,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 19 states have internal predecessors, (95), 3 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:51:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 13:51:55,287 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 13:51:55,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-19 13:51:55,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-19 13:51:55,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:55,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:51:55,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-19 13:51:55,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:51:55,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 13:51:57,374 INFO L854 garLoopResultBuilder]: At program point L122(lines 71 124) the Hoare annotation is: (or (and (= base2flt_~e |base2flt_#in~e|) (= base2flt_~__retres4~0 (_ bv0 32)) (= base2flt_~m (bvshl (bvshl |base2flt_#in~m| (_ bv1 32)) (_ bv1 32)))) (not (= |base2flt_#in~m| (_ bv0 32)))) [2021-11-19 13:51:57,374 INFO L858 garLoopResultBuilder]: For program point L81(lines 80 95) no Hoare annotation was computed. [2021-11-19 13:51:57,374 INFO L858 garLoopResultBuilder]: For program point L102(lines 100 115) no Hoare annotation was computed. [2021-11-19 13:51:57,374 INFO L858 garLoopResultBuilder]: For program point L90(lines 90 94) no Hoare annotation was computed. [2021-11-19 13:51:57,374 INFO L854 garLoopResultBuilder]: At program point L90-1(lines 80 95) the Hoare annotation is: (and (not (= |base2flt_#in~m| (_ bv0 32))) (or (bvult base2flt_~m (_ bv16777216 32)) (not (= |base2flt_#in~m| (_ bv1 32))))) [2021-11-19 13:51:57,375 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 118) no Hoare annotation was computed. [2021-11-19 13:51:57,375 INFO L861 garLoopResultBuilder]: At program point base2fltENTRY(lines 67 125) the Hoare annotation is: true [2021-11-19 13:51:57,375 INFO L854 garLoopResultBuilder]: At program point L116(lines 78 118) the Hoare annotation is: (not (= |base2flt_#in~m| (_ bv0 32))) [2021-11-19 13:51:57,375 INFO L858 garLoopResultBuilder]: For program point base2fltFINAL(lines 67 125) no Hoare annotation was computed. [2021-11-19 13:51:57,375 INFO L854 garLoopResultBuilder]: At program point L100-2(lines 100 115) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~e| (_ bv0 32))))) (and (or (not (bvsle base2flt_~e (_ bv4294967168 32))) .cse0) (or (not (bvsle (bvadd (_ bv4294967292 32) base2flt_~e) (_ bv4294967168 32))) .cse0) (not (bvult |base2flt_#in~m| (_ bv16777216 32))))) [2021-11-19 13:51:57,375 INFO L858 garLoopResultBuilder]: For program point base2fltEXIT(lines 67 125) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 77) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L858 garLoopResultBuilder]: For program point L101(lines 100 115) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L854 garLoopResultBuilder]: At program point L283(line 283) the Hoare annotation is: (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) [2021-11-19 13:51:57,376 INFO L858 garLoopResultBuilder]: For program point L283-1(line 283) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L858 garLoopResultBuilder]: For program point L300(lines 300 309) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L854 garLoopResultBuilder]: At program point L300-2(lines 300 309) the Hoare annotation is: (and (= |ULTIMATE.start_main2_~tmp___0~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~tmp___1~0#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32))) [2021-11-19 13:51:57,376 INFO L858 garLoopResultBuilder]: For program point L201(lines 201 207) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L858 garLoopResultBuilder]: For program point L201-2(lines 200 261) no Hoare annotation was computed. [2021-11-19 13:51:57,376 INFO L854 garLoopResultBuilder]: At program point L259(lines 200 261) the Hoare annotation is: (or (and (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32))) (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (_ bv0 32)) (and (= (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)))) [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 13:51:57,377 INFO L861 garLoopResultBuilder]: At program point L317(lines 263 319) the Hoare annotation is: true [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 13:51:57,377 INFO L854 garLoopResultBuilder]: At program point L284(line 284) the Hoare annotation is: (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point L284-1(line 284) no Hoare annotation was computed. [2021-11-19 13:51:57,377 INFO L854 garLoopResultBuilder]: At program point L260(lines 190 262) the Hoare annotation is: (or (and (= (_ bv0 32) |ULTIMATE.start_mulflt_#res#1|) (= |ULTIMATE.start_mulflt_~__retres10~1#1| (_ bv0 32)) (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32))) (= (bvadd (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (_ bv0 32)) (and (= (_ bv1 32) |ULTIMATE.start_main2_~sb~0#1|) (= |ULTIMATE.start_main2_~tmp~2#1| (_ bv1 32)))) [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 233) no Hoare annotation was computed. [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point L286(lines 286 295) no Hoare annotation was computed. [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point L286-2(lines 286 295) no Hoare annotation was computed. [2021-11-19 13:51:57,377 INFO L858 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-19 13:51:57,378 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 307) no Hoare annotation was computed. [2021-11-19 13:51:57,378 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 48) no Hoare annotation was computed. [2021-11-19 13:51:57,378 INFO L858 garLoopResultBuilder]: For program point L237(lines 237 254) no Hoare annotation was computed. [2021-11-19 13:51:57,378 INFO L858 garLoopResultBuilder]: For program point L303-2(lines 303 307) no Hoare annotation was computed. [2021-11-19 13:51:57,378 INFO L858 garLoopResultBuilder]: For program point L237-2(lines 237 254) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L320(lines 320 326) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L246(lines 246 251) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L238(lines 238 243) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L222(lines 222 227) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L322(lines 322 325) no Hoare annotation was computed. [2021-11-19 13:51:57,379 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-11-19 13:51:57,380 INFO L858 garLoopResultBuilder]: For program point L289(lines 289 293) no Hoare annotation was computed. [2021-11-19 13:51:57,380 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 13:51:57,380 INFO L858 garLoopResultBuilder]: For program point L289-2(lines 289 293) no Hoare annotation was computed. [2021-11-19 13:51:57,380 INFO L861 garLoopResultBuilder]: At program point L281(line 281) the Hoare annotation is: true [2021-11-19 13:51:57,380 INFO L858 garLoopResultBuilder]: For program point L281-1(line 281) no Hoare annotation was computed. [2021-11-19 13:51:57,380 INFO L861 garLoopResultBuilder]: At program point L50(lines 37 51) the Hoare annotation is: true [2021-11-19 13:51:57,380 INFO L858 garLoopResultBuilder]: For program point L34(line 34) no Hoare annotation was computed. [2021-11-19 13:51:57,380 INFO L854 garLoopResultBuilder]: At program point L282(line 282) the Hoare annotation is: (= |ULTIMATE.start_main2_~zero~0#1| (_ bv0 32)) [2021-11-19 13:51:57,380 INFO L858 garLoopResultBuilder]: For program point L282-1(line 282) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point L299(lines 299 315) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point L299-1(lines 299 315) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 58 63) the Hoare annotation is: true [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point L60(line 60) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 61) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 58 63) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point L59-2(lines 58 63) no Hoare annotation was computed. [2021-11-19 13:51:57,381 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 60) no Hoare annotation was computed. [2021-11-19 13:51:57,384 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:51:57,385 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:51:57,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:51:57 BoogieIcfgContainer [2021-11-19 13:51:57,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:51:57,407 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:51:57,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:51:57,408 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:51:57,408 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:27" (3/4) ... [2021-11-19 13:51:57,412 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 13:51:57,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2021-11-19 13:51:57,419 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 13:51:57,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-19 13:51:57,427 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-19 13:51:57,434 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 13:51:57,435 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 13:51:57,468 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32) [2021-11-19 13:51:57,469 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) && (~bvult32(m, 16777216bv32) || !(\old(m) == 1bv32)) [2021-11-19 13:51:57,469 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd64(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32) [2021-11-19 13:51:57,469 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) [2021-11-19 13:51:57,471 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) || ~bvadd64(1bv32, sb) == 0bv32) || (1bv32 == sb && tmp == 1bv32) [2021-11-19 13:51:57,510 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 13:51:57,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:51:57,511 INFO L158 Benchmark]: Toolchain (without parser) took 753602.92ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 58.1MB in the beginning and 80.8MB in the end (delta: -22.7MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2021-11-19 13:51:57,511 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:51:57,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.22ms. Allocated memory is still 75.5MB. Free memory was 57.8MB in the beginning and 53.7MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:51:57,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.82ms. Allocated memory is still 75.5MB. Free memory was 53.7MB in the beginning and 51.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:51:57,513 INFO L158 Benchmark]: Boogie Preprocessor took 37.11ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 50.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 13:51:57,514 INFO L158 Benchmark]: RCFGBuilder took 2677.65ms. Allocated memory is still 75.5MB. Free memory was 50.0MB in the beginning and 36.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 13:51:57,514 INFO L158 Benchmark]: TraceAbstraction took 750336.63ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 35.9MB in the beginning and 29.1MB in the end (delta: 6.7MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2021-11-19 13:51:57,515 INFO L158 Benchmark]: Witness Printer took 103.00ms. Allocated memory is still 104.9MB. Free memory was 29.1MB in the beginning and 80.8MB in the end (delta: -51.7MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2021-11-19 13:51:57,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 75.5MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.22ms. Allocated memory is still 75.5MB. Free memory was 57.8MB in the beginning and 53.7MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.82ms. Allocated memory is still 75.5MB. Free memory was 53.7MB in the beginning and 51.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.11ms. Allocated memory is still 75.5MB. Free memory was 51.9MB in the beginning and 50.2MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2677.65ms. Allocated memory is still 75.5MB. Free memory was 50.0MB in the beginning and 36.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 750336.63ms. Allocated memory was 75.5MB in the beginning and 104.9MB in the end (delta: 29.4MB). Free memory was 35.9MB in the beginning and 29.1MB in the end (delta: 6.7MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. * Witness Printer took 103.00ms. Allocated memory is still 104.9MB. Free memory was 29.1MB in the beginning and 80.8MB in the end (delta: -51.7MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 60]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 750.2s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 26.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 573 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 573 mSDsluCounter, 3641 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 261 IncrementalHoareTripleChecker+Unchecked, 2821 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1386 IncrementalHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 820 mSDtfsCounter, 1386 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2663 GetRequests, 2472 SyntacticMatches, 4 SemanticMatches, 187 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 45.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=11, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 105 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 137 PreInvPairs, 382 NumberOfFragments, 128 HoareAnnotationTreeSize, 137 FomulaSimplifications, 1719 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 900 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 508.7s SatisfiabilityAnalysisTime, 206.7s InterpolantComputationTime, 1321 NumberOfCodeBlocks, 1321 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2590 ConstructedInterpolants, 4 QuantifiedInterpolants, 5334 SizeOfPredicates, 61 NumberOfNonLiveVariables, 2478 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 52 InterpolantComputations, 17 PerfectInterpolantSequences, 1436/1728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 200]: Loop Invariant Derived loop invariant: ((__retres10 == 0bv32 && zero == 0bv32) || ~bvadd64(1bv32, sb) == 0bv32) || (1bv32 == sb && tmp == 1bv32) - InvariantResult [Line: 263]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: ((e == \old(e) && __retres4 == 0bv32) && m == ~bvshl32(~bvshl32(\old(m), 1bv32), 1bv32)) || !(\old(m) == 0bv32) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((!~bvsle32(e, 4294967168bv32) || !(\old(e) == 0bv32)) && (!~bvsle32(~bvadd64(4294967292bv32, e), 4294967168bv32) || !(\old(e) == 0bv32))) && !~bvult32(\old(m), 16777216bv32) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) && (~bvult32(m, 16777216bv32) || !(\old(m) == 1bv32)) - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: (((0bv32 == \result && __retres10 == 0bv32) && zero == 0bv32) || ~bvadd64(1bv32, sb) == 0bv32) || (1bv32 == sb && tmp == 1bv32) RESULT: Ultimate proved your program to be correct! [2021-11-19 13:51:57,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42e1a9f-6050-4872-9dd6-86fb4da95ccf/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE