./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF --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 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:41:09,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:41:09,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:41:09,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:41:09,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:41:09,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:41:09,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:41:09,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:41:09,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:41:09,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:41:09,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:41:09,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:41:09,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:41:09,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:41:09,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:41:09,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:41:09,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:41:09,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:41:09,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:41:09,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:41:09,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:41:09,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:41:09,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:41:09,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:41:09,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:41:09,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:41:09,769 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:41:09,770 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:41:09,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:41:09,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:41:09,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:41:09,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:41:09,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:41:09,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:41:09,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:41:09,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:41:09,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:41:09,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:41:09,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:41:09,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:41:09,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:41:09,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:41:09,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:41:09,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:41:09,813 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:41:09,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:41:09,813 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:41:09,814 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:41:09,814 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:41:09,814 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:41:09,814 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:41:09,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:41:09,815 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:41:09,815 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:41:09,815 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:41:09,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:41:09,816 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:41:09,816 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:41:09,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:41:09,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:41:09,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:41:09,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:41:09,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:41:09,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:41:09,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:41:09,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:41:09,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:41:09,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:41:09,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:41:09,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:41:09,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:41:09,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:41:09,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:41:09,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:09,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:41:09,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:41:09,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:41:09,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:41:09,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:41:09,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:41:09,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:41:09,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:41:09,822 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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c [2021-11-13 02:41:10,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:41:10,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:41:10,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:41:10,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:41:10,153 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:41:10,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-11-13 02:41:10,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/14009e2d6/63815d3bd1da40f6afec2df6295e4791/FLAG283530d38 [2021-11-13 02:41:10,768 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:41:10,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-11-13 02:41:10,775 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/14009e2d6/63815d3bd1da40f6afec2df6295e4791/FLAG283530d38 [2021-11-13 02:41:11,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/14009e2d6/63815d3bd1da40f6afec2df6295e4791 [2021-11-13 02:41:11,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:41:11,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:41:11,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:11,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:41:11,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:41:11,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18292671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11, skipping insertion in model container [2021-11-13 02:41:11,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:41:11,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:41:11,387 WARN L228 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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-11-13 02:41:11,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:11,399 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:41:11,440 WARN L228 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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-11-13 02:41:11,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:11,461 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:41:11,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11 WrapperNode [2021-11-13 02:41:11,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:11,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:41:11,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:41:11,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:41:11,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:41:11,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:41:11,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:41:11,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:41:11,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:41:11,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:41:11,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:41:11,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:41:11,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (1/1) ... [2021-11-13 02:41:11,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:11,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:41:11,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:41:11,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:41:11,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:41:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:41:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-11-13 02:41:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-11-13 02:41:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-13 02:41:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 02:41:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-13 02:41:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:41:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:41:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 02:41:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:41:12,057 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:41:12,058 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-13 02:41:12,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:12 BoogieIcfgContainer [2021-11-13 02:41:12,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:41:12,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:41:12,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:41:12,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:41:12,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:41:11" (1/3) ... [2021-11-13 02:41:12,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:12, skipping insertion in model container [2021-11-13 02:41:12,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:11" (2/3) ... [2021-11-13 02:41:12,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d3436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:12, skipping insertion in model container [2021-11-13 02:41:12,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:12" (3/3) ... [2021-11-13 02:41:12,070 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2021-11-13 02:41:12,076 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:41:12,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:41:12,131 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:41:12,149 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 [2021-11-13 02:41:12,150 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:41:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 32 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 02:41:12,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:12,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:12,199 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:12,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:12,205 INFO L85 PathProgramCache]: Analyzing trace with hash 980551628, now seen corresponding path program 1 times [2021-11-13 02:41:12,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:12,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781589978] [2021-11-13 02:41:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:12,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:12,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:12,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781589978] [2021-11-13 02:41:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781589978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:12,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:12,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 02:41:12,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981694738] [2021-11-13 02:41:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:12,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:41:12,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:12,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:41:12,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:41:12,443 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 32 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:41:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:12,479 INFO L93 Difference]: Finished difference Result 71 states and 109 transitions. [2021-11-13 02:41:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:41:12,482 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 02:41:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:12,490 INFO L225 Difference]: With dead ends: 71 [2021-11-13 02:41:12,491 INFO L226 Difference]: Without dead ends: 34 [2021-11-13 02:41:12,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:41:12,499 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.50ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:12,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 9.50ms Time] [2021-11-13 02:41:12,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-13 02:41:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-13 02:41:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-11-13 02:41:12,545 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 15 [2021-11-13 02:41:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:12,545 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-11-13 02:41:12,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:41:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-11-13 02:41:12,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 02:41:12,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:12,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:12,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:41:12,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:12,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash -868093747, now seen corresponding path program 1 times [2021-11-13 02:41:12,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:12,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462861265] [2021-11-13 02:41:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:12,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:12,639 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:41:12,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462861265] [2021-11-13 02:41:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462861265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:12,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:12,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:41:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029601920] [2021-11-13 02:41:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:12,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:12,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:41:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:12,644 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:41:12,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:12,670 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-11-13 02:41:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:12,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-13 02:41:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:12,673 INFO L225 Difference]: With dead ends: 37 [2021-11-13 02:41:12,673 INFO L226 Difference]: Without dead ends: 34 [2021-11-13 02:41:12,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:12,676 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:12,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 13.87ms Time] [2021-11-13 02:41:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-13 02:41:12,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-13 02:41:12,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-11-13 02:41:12,685 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 17 [2021-11-13 02:41:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:12,687 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-11-13 02:41:12,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:41:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-11-13 02:41:12,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 02:41:12,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:12,689 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:12,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 02:41:12,690 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:12,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1131488603, now seen corresponding path program 1 times [2021-11-13 02:41:12,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:41:12,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159659733] [2021-11-13 02:41:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:12,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:41:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:41:12,760 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:41:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:41:12,858 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-13 02:41:12,858 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:41:12,859 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:41:12,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 02:41:12,866 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-13 02:41:12,869 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:41:12,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:41:12 BoogieIcfgContainer [2021-11-13 02:41:12,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:41:12,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:41:12,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:41:12,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:41:12,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:12" (3/4) ... [2021-11-13 02:41:12,917 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 02:41:12,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:41:12,918 INFO L158 Benchmark]: Toolchain (without parser) took 1760.45ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 79.2MB in the beginning and 89.0MB in the end (delta: -9.8MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-11-13 02:41:12,919 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 64.4MB in the beginning and 64.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:41:12,921 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.56ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 86.4MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:41:12,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.87ms. Allocated memory is still 113.2MB. Free memory was 86.4MB in the beginning and 84.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:41:12,923 INFO L158 Benchmark]: Boogie Preprocessor took 67.14ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 83.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:41:12,924 INFO L158 Benchmark]: RCFGBuilder took 465.29ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 68.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:41:12,924 INFO L158 Benchmark]: TraceAbstraction took 849.16ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 67.6MB in the beginning and 89.0MB in the end (delta: -21.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2021-11-13 02:41:12,929 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 136.3MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:41:12,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory was 64.4MB in the beginning and 64.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.56ms. Allocated memory is still 113.2MB. Free memory was 79.0MB in the beginning and 86.4MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.87ms. Allocated memory is still 113.2MB. Free memory was 86.4MB in the beginning and 84.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.14ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 83.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 465.29ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 68.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 849.16ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 67.6MB in the beginning and 89.0MB in the end (delta: -21.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 136.3MB. Free memory is still 89.0MB. 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: 88]: 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L84] CALL, EXPR modf_float(x, &iptr) [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [\old(x)=4294967299, iptr={7:0}, iptr={7:0}, one_modf=1, x=4294967299] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=4294967299, i0=-1, iptr={7:0}, iptr={7:0}, one_modf=1, x=4294967299] [L24] COND TRUE j0 < 23 VAL [\old(x)=4294967299, i0=-1, iptr={7:0}, iptr={7:0}, j0=-1, one_modf=1, x=4294967299] [L25] COND TRUE j0 < 0 VAL [\old(x)=4294967299, i0=-1, iptr={7:0}, iptr={7:0}, j0=-1, one_modf=1, x=4294967299] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [\old(x)=4294967299, \result=4294967299, i0=-1, iptr={7:0}, iptr={7:0}, j0=-1, one_modf=1, x=4294967299] [L84] RET, EXPR modf_float(x, &iptr) [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) VAL [\read(iptr)=4294967296, iptr={7:0}, one_modf=1, res=4294967299, x=4294967299] [L87] CALL, EXPR isnan_float(iptr) VAL [\old(x)=4294967296, one_modf=1] [L75] return x != x; [L87] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=4294967296, iptr={7:0}, isnan_float(iptr)=1, one_modf=1, res=4294967299, x=4294967299] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967296, iptr={7:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=4294967299, x=4294967299] [L87] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967299, one_modf=1] [L75] return x != x; [L87] RET, EXPR isnan_float(res) VAL [\read(iptr)=4294967296, iptr={7:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967299, x=4294967299] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967296, iptr={7:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967299, x=4294967299] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() VAL [iptr={7:0}, one_modf=1, res=4294967299, x=4294967299] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 23.37ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 18.73ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 73 mSDtfsCounter, 11 mSolverCounterSat, 2.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-13 02:41:12,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF --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 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:41:15,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:41:15,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:41:15,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:41:15,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:41:15,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:41:15,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:41:15,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:41:15,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:41:15,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:41:15,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:41:15,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:41:15,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:41:15,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:41:15,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:41:15,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:41:15,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:41:15,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:41:15,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:41:15,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:41:15,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:41:15,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:41:15,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:41:15,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:41:15,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:41:15,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:41:15,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:41:15,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:41:15,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:41:15,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:41:15,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:41:15,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:41:15,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:41:15,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:41:15,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:41:15,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:41:15,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:41:15,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:41:15,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:41:15,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:41:15,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:41:15,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:41:15,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:41:15,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:41:15,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:41:15,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:41:15,603 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:41:15,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:41:15,603 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:41:15,603 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:41:15,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:41:15,604 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:41:15,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:41:15,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:41:15,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:41:15,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:41:15,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:41:15,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:41:15,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:41:15,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:41:15,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:41:15,607 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:41:15,607 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:41:15,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:41:15,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:41:15,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:41:15,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:41:15,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:41:15,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:41:15,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:15,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:41:15,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:41:15,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:41:15,612 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:41:15,612 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:41:15,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:41:15,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:41:15,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:41:15,614 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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c [2021-11-13 02:41:16,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:41:16,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:41:16,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:41:16,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:41:16,061 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:41:16,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-11-13 02:41:16,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/fa8423833/a415e416610e46e9a80141406896b8ad/FLAG500719d23 [2021-11-13 02:41:16,624 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:41:16,630 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2021-11-13 02:41:16,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/fa8423833/a415e416610e46e9a80141406896b8ad/FLAG500719d23 [2021-11-13 02:41:16,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/data/fa8423833/a415e416610e46e9a80141406896b8ad [2021-11-13 02:41:16,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:41:16,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:41:16,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:16,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:41:17,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:41:17,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:16" (1/1) ... [2021-11-13 02:41:17,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2872534f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17, skipping insertion in model container [2021-11-13 02:41:17,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:41:16" (1/1) ... [2021-11-13 02:41:17,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:41:17,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:41:17,231 WARN L228 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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-11-13 02:41:17,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:17,249 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:41:17,337 WARN L228 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_b3a6e72f-3990-43d7-8baf-e424a2279cfa/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2021-11-13 02:41:17,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:41:17,356 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:41:17,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17 WrapperNode [2021-11-13 02:41:17,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:41:17,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:41:17,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:41:17,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:41:17,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:41:17,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:41:17,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:41:17,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:41:17,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:41:17,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:41:17,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:41:17,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:41:17,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (1/1) ... [2021-11-13 02:41:17,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:41:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:41:17,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:41:17,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:41:17,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:41:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:41:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-13 02:41:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-11-13 02:41:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-11-13 02:41:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 02:41:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:41:17,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:41:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-13 02:41:17,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 02:41:17,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 02:41:18,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:41:18,202 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-13 02:41:18,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:18 BoogieIcfgContainer [2021-11-13 02:41:18,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:41:18,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:41:18,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:41:18,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:41:18,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:41:16" (1/3) ... [2021-11-13 02:41:18,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31732dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:18, skipping insertion in model container [2021-11-13 02:41:18,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:41:17" (2/3) ... [2021-11-13 02:41:18,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31732dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:41:18, skipping insertion in model container [2021-11-13 02:41:18,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:41:18" (3/3) ... [2021-11-13 02:41:18,212 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2021-11-13 02:41:18,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:41:18,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:41:18,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:41:18,275 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 [2021-11-13 02:41:18,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:41:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 02:41:18,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:18,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:18,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:18,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash -218345182, now seen corresponding path program 1 times [2021-11-13 02:41:18,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:18,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642539331] [2021-11-13 02:41:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:18,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:18,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:18,345 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:18,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:41:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:18,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:41:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:18,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:18,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:18,707 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:18,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642539331] [2021-11-13 02:41:18,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642539331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:18,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:18,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:41:18,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042902390] [2021-11-13 02:41:18,711 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:18,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:41:18,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:41:18,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:41:18,752 INFO L87 Difference]: Start difference. First operand has 39 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:41:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:18,774 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2021-11-13 02:41:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:41:18,776 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-13 02:41:18,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:18,784 INFO L225 Difference]: With dead ends: 76 [2021-11-13 02:41:18,784 INFO L226 Difference]: Without dead ends: 36 [2021-11-13 02:41:18,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:41:18,791 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:18,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:41:18,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-13 02:41:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-13 02:41:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-11-13 02:41:18,831 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 17 [2021-11-13 02:41:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:18,832 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-11-13 02:41:18,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:41:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-11-13 02:41:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 02:41:18,835 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:18,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:18,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:19,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:19,049 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:19,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash -667427839, now seen corresponding path program 1 times [2021-11-13 02:41:19,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:19,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353251011] [2021-11-13 02:41:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:19,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:19,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:19,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:19,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:41:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:19,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:41:19,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:19,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:19,741 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:19,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353251011] [2021-11-13 02:41:19,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353251011] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:19,741 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:19,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 02:41:19,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474391464] [2021-11-13 02:41:19,742 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:19,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:41:19,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:41:19,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:19,745 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:41:19,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:19,768 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-11-13 02:41:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:41:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2021-11-13 02:41:19,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:19,770 INFO L225 Difference]: With dead ends: 48 [2021-11-13 02:41:19,771 INFO L226 Difference]: Without dead ends: 23 [2021-11-13 02:41:19,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:19,773 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 8.27ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:19,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 11 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 9 Unchecked, 8.27ms Time] [2021-11-13 02:41:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-13 02:41:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-13 02:41:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:19,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-13 02:41:19,779 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2021-11-13 02:41:19,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:19,780 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-13 02:41:19,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 02:41:19,780 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-13 02:41:19,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 02:41:19,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:19,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:19,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:19,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:19,995 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:19,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:19,995 INFO L85 PathProgramCache]: Analyzing trace with hash 971993530, now seen corresponding path program 1 times [2021-11-13 02:41:19,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:19,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220018199] [2021-11-13 02:41:19,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:19,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:19,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:19,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:20,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:41:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:20,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:41:20,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:20,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:20,268 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:20,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [220018199] [2021-11-13 02:41:20,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [220018199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:20,269 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:20,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 02:41:20,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715623798] [2021-11-13 02:41:20,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:20,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:41:20,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:20,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:41:20,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:20,277 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:41:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:20,300 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-11-13 02:41:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:41:20,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-13 02:41:20,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:20,302 INFO L225 Difference]: With dead ends: 26 [2021-11-13 02:41:20,303 INFO L226 Difference]: Without dead ends: 23 [2021-11-13 02:41:20,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:41:20,307 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.15ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:20,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 11.15ms Time] [2021-11-13 02:41:20,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-13 02:41:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-13 02:41:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 02:41:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-11-13 02:41:20,319 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2021-11-13 02:41:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:20,320 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-11-13 02:41:20,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 02:41:20,321 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-11-13 02:41:20,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-13 02:41:20,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:20,321 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:20,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:20,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:20,522 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1443547935, now seen corresponding path program 1 times [2021-11-13 02:41:20,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:20,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122100439] [2021-11-13 02:41:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:20,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:20,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:20,525 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:20,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:41:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:41:20,751 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 02:41:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 02:41:20,976 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-13 02:41:20,977 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 02:41:20,978 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:41:20,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:21,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:21,198 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-13 02:41:21,202 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:41:21,223 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 02:41:21,225 INFO L158 Benchmark]: Toolchain (without parser) took 4229.98ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 42.4MB in the beginning and 37.9MB in the end (delta: 4.4MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-13 02:41:21,235 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:41:21,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.76ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 44.5MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 02:41:21,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.20ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 42.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:41:21,236 INFO L158 Benchmark]: Boogie Preprocessor took 66.88ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 40.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:41:21,237 INFO L158 Benchmark]: RCFGBuilder took 707.02ms. Allocated memory is still 62.9MB. Free memory was 40.7MB in the beginning and 43.1MB in the end (delta: -2.5MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-11-13 02:41:21,237 INFO L158 Benchmark]: TraceAbstraction took 3018.90ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 42.6MB in the beginning and 37.9MB in the end (delta: 4.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-13 02:41:21,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.76ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 44.5MB in the end (delta: -2.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.20ms. Allocated memory is still 62.9MB. Free memory was 44.3MB in the beginning and 42.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.88ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 40.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 707.02ms. Allocated memory is still 62.9MB. Free memory was 40.7MB in the beginning and 43.1MB in the end (delta: -2.5MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3018.90ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 42.6MB in the beginning and 37.9MB in the end (delta: 4.7MB). Peak memory consumption was 19.6MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 02:41:21,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3a6e72f-3990-43d7-8baf-e424a2279cfa/bin/utaipan-vmNK8stdcF/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: ERROR: ExceptionOrErrorResult: NullPointerException: null