./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 6dd343d8c842dca5f2bd703f90ecddcb3075588362c6b6e2ad48689abc1295d4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:00,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:00,661 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:54:00,672 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:00,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:54:00,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:54:00,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:54:00,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:54:00,719 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:54:00,724 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:54:00,725 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:54:00,726 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:54:00,727 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:54:00,728 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:54:00,729 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:54:00,729 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:54:00,730 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:54:00,730 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:54:00,731 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:54:00,731 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:54:00,732 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:54:00,732 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:54:00,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:54:00,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:54:00,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:54:00,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:54:00,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:54:00,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:54:00,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:54:00,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:54:00,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:54:00,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:54:00,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:54:00,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:54:00,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:54:00,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:54:00,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:00,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:54:00,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:54:00,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:54:00,741 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:54:00,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:54:00,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:54:00,742 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:54:00,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:54:00,743 INFO L153 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_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dd343d8c842dca5f2bd703f90ecddcb3075588362c6b6e2ad48689abc1295d4 [2023-11-19 04:54:01,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:54:01,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:54:01,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:54:01,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:54:01,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:54:01,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2023-11-19 04:54:04,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:54:04,695 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:54:04,695 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2023-11-19 04:54:04,705 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data/f8b6e26b3/b48618638b0c4af2b172c14e06366ab0/FLAG154d870d7 [2023-11-19 04:54:04,724 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data/f8b6e26b3/b48618638b0c4af2b172c14e06366ab0 [2023-11-19 04:54:04,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:54:04,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:54:04,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:04,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:54:04,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:54:04,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:04" (1/1) ... [2023-11-19 04:54:04,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6d97df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:04, skipping insertion in model container [2023-11-19 04:54:04,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:04" (1/1) ... [2023-11-19 04:54:04,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:04,998 WARN L240 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_4cc167f9-5a52-4521-a802-eac6145f3d10/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2023-11-19 04:54:05,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:05,016 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:54:05,054 WARN L240 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_4cc167f9-5a52-4521-a802-eac6145f3d10/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2023-11-19 04:54:05,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:05,080 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:54:05,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05 WrapperNode [2023-11-19 04:54:05,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:05,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:05,083 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:54:05,083 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:54:05,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,103 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,136 INFO L138 Inliner]: procedures = 17, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2023-11-19 04:54:05,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:05,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:54:05,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:54:05,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:54:05,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,177 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,194 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:54:05,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:54:05,200 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:54:05,200 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:54:05,201 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (1/1) ... [2023-11-19 04:54:05,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:05,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:05,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:54:05,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:54:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:54:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:54:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:54:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 04:54:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:54:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 04:54:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:54:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:54:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:54:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:54:05,413 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:54:05,415 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:54:05,732 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:54:05,837 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:54:05,837 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 04:54:05,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:05 BoogieIcfgContainer [2023-11-19 04:54:05,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:54:05,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:54:05,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:54:05,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:54:05,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:54:04" (1/3) ... [2023-11-19 04:54:05,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32af361f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:05, skipping insertion in model container [2023-11-19 04:54:05,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:05" (2/3) ... [2023-11-19 04:54:05,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32af361f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:05, skipping insertion in model container [2023-11-19 04:54:05,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:05" (3/3) ... [2023-11-19 04:54:05,853 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2023-11-19 04:54:05,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:54:05,870 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:54:05,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:05,928 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bb8489e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:05,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:54:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:54:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:05,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:05,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:05,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash -303183681, now seen corresponding path program 1 times [2023-11-19 04:54:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:05,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975922280] [2023-11-19 04:54:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:05,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:06,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:54:06,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975922280] [2023-11-19 04:54:06,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975922280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:06,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:06,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277244957] [2023-11-19 04:54:06,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:54:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:54:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:54:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:54:06,184 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:06,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:06,251 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2023-11-19 04:54:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:54:06,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:54:06,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:06,268 INFO L225 Difference]: With dead ends: 25 [2023-11-19 04:54:06,268 INFO L226 Difference]: Without dead ends: 11 [2023-11-19 04:54:06,271 INFO L412 NwaCegarLoop]: 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 [2023-11-19 04:54:06,275 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:06,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:54:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-19 04:54:06,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-19 04:54:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:06,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2023-11-19 04:54:06,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 7 [2023-11-19 04:54:06,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:06,309 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2023-11-19 04:54:06,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2023-11-19 04:54:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:54:06,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:06,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:54:06,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:06,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash -820242921, now seen corresponding path program 1 times [2023-11-19 04:54:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:54:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258426652] [2023-11-19 04:54:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:54:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:54:06,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:54:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:54:06,471 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:54:06,471 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:54:06,474 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:54:06,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:54:06,479 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 04:54:06,484 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:54:06,507 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:54:06 BoogieIcfgContainer [2023-11-19 04:54:06,507 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:54:06,508 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:54:06,508 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:54:06,508 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:54:06,509 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:05" (3/4) ... [2023-11-19 04:54:06,511 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:54:06,512 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:54:06,513 INFO L158 Benchmark]: Toolchain (without parser) took 1779.01ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 103.5MB in the beginning and 140.4MB in the end (delta: -36.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:06,513 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 153.1MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:06,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.29ms. Allocated memory is still 153.1MB. Free memory was 103.3MB in the beginning and 92.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:54:06,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.58ms. Allocated memory is still 153.1MB. Free memory was 92.7MB in the beginning and 91.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:06,515 INFO L158 Benchmark]: Boogie Preprocessor took 60.88ms. Allocated memory is still 153.1MB. Free memory was 91.0MB in the beginning and 89.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:06,516 INFO L158 Benchmark]: RCFGBuilder took 643.40ms. Allocated memory is still 153.1MB. Free memory was 89.4MB in the beginning and 72.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 04:54:06,516 INFO L158 Benchmark]: TraceAbstraction took 661.76ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 71.3MB in the beginning and 141.4MB in the end (delta: -70.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:06,517 INFO L158 Benchmark]: Witness Printer took 3.77ms. Allocated memory is still 184.5MB. Free memory was 141.4MB in the beginning and 140.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:06,520 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 153.1MB. Free memory is still 124.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.29ms. Allocated memory is still 153.1MB. Free memory was 103.3MB in the beginning and 92.7MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.58ms. Allocated memory is still 153.1MB. Free memory was 92.7MB in the beginning and 91.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.88ms. Allocated memory is still 153.1MB. Free memory was 91.0MB in the beginning and 89.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 643.40ms. Allocated memory is still 153.1MB. Free memory was 89.4MB in the beginning and 72.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 661.76ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 71.3MB in the beginning and 141.4MB in the end (delta: -70.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.77ms. Allocated memory is still 184.5MB. Free memory was 141.4MB in the beginning and 140.4MB in the end (delta: 1.0MB). 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: 51]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of bitwiseOr at line 28, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L45] float x = 0.0f / 0.0f; [L46] float y = __VERIFIER_nondet_float(); [L47] CALL, EXPR copysign_float(x, y) [L15] __uint32_t ix, iy; VAL [\old(x)=2147483665, \old(y)=2147483664, x=2147483665, y=2147483664] [L17] ieee_float_shape_type gf_u; [L18] EXPR gf_u.value = (x) [L19] EXPR gf_u.word [L19] EXPR (ix) = gf_u.word [L16-L20] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [\old(x)=2147483665, \old(y)=2147483664, ix=2147483649, x=2147483665, y=2147483664] [L22] ieee_float_shape_type gf_u; [L23] EXPR gf_u.value = (y) [L24] EXPR gf_u.word [L24] EXPR (iy) = gf_u.word [L21-L25] { ieee_float_shape_type gf_u; gf_u.value = (y); (iy) = gf_u.word; } VAL [\old(x)=2147483665, \old(y)=2147483664, ix=2147483649, iy=2147483648, x=2147483665, y=2147483664] [L27] ieee_float_shape_type sf_u; [L28] EXPR (ix & 0x7fffffff) | (iy & 0x80000000) [L28] EXPR sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)) [L29] EXPR sf_u.value [L29] EXPR (x) = sf_u.value [L26-L30] { ieee_float_shape_type sf_u; sf_u.word = ((ix & 0x7fffffff) | (iy & 0x80000000)); (x) = sf_u.value; } VAL [\old(x)=2147483665, \old(y)=2147483664, ix=2147483649, iy=2147483648, x=2147483663, y=2147483664] [L31] return x; [L47] RET, EXPR copysign_float(x, y) [L47] float res = copysign_float(x, y); [L50] CALL, EXPR isnan_float(res) [L35] return x != x; [L50] RET, EXPR isnan_float(res) [L50] COND TRUE !isnan_float(res) [L51] reach_error() VAL [res=2147483663, x=2147483665, y=2147483664] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 8 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-11-19 04:54:06,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 6dd343d8c842dca5f2bd703f90ecddcb3075588362c6b6e2ad48689abc1295d4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:54:09,199 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:54:09,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:54:09,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:54:09,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:54:09,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:54:09,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:54:09,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:54:09,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:54:09,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:54:09,387 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:54:09,387 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:54:09,388 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:54:09,389 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:54:09,390 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:54:09,390 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:54:09,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:54:09,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:54:09,393 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:54:09,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:54:09,394 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:54:09,395 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:54:09,395 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:54:09,396 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:54:09,396 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:54:09,397 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:54:09,397 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:54:09,398 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:54:09,398 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:54:09,399 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:54:09,400 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:54:09,401 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:54:09,401 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:54:09,402 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:09,402 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:54:09,402 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:54:09,403 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:54:09,403 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:54:09,403 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:09,404 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:54:09,405 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:54:09,405 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:54:09,406 INFO L153 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_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dd343d8c842dca5f2bd703f90ecddcb3075588362c6b6e2ad48689abc1295d4 [2023-11-19 04:54:09,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:54:09,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:54:09,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:54:09,926 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:54:09,926 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:54:09,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2023-11-19 04:54:13,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:54:13,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:54:13,462 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/sv-benchmarks/c/float-newlib/float_req_bl_1381.c [2023-11-19 04:54:13,472 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data/4b2023f4d/d3e0acf89b7d48958fe1aa19aa405e1b/FLAG6f2171626 [2023-11-19 04:54:13,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/data/4b2023f4d/d3e0acf89b7d48958fe1aa19aa405e1b [2023-11-19 04:54:13,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:54:13,497 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:54:13,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:13,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:54:13,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:54:13,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@267fc4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13, skipping insertion in model container [2023-11-19 04:54:13,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:54:13,755 WARN L240 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_4cc167f9-5a52-4521-a802-eac6145f3d10/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2023-11-19 04:54:13,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:13,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:54:13,811 WARN L240 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_4cc167f9-5a52-4521-a802-eac6145f3d10/sv-benchmarks/c/float-newlib/float_req_bl_1381.c[1242,1255] [2023-11-19 04:54:13,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:54:13,835 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:54:13,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13 WrapperNode [2023-11-19 04:54:13,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:54:13,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:13,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:54:13,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:54:13,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,902 INFO L138 Inliner]: procedures = 20, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-19 04:54:13,902 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:54:13,903 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:54:13,903 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:54:13,903 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:54:13,912 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,953 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:54:13,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:54:13,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:54:13,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:54:13,973 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (1/1) ... [2023-11-19 04:54:13,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:54:13,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:14,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:54:14,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:54:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:54:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:54:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:54:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-11-19 04:54:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:54:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:54:14,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:54:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-11-19 04:54:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:54:14,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:54:14,144 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:54:14,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:54:14,414 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:54:14,421 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:54:14,421 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 04:54:14,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:14 BoogieIcfgContainer [2023-11-19 04:54:14,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:54:14,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:54:14,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:54:14,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:54:14,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:54:13" (1/3) ... [2023-11-19 04:54:14,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf35e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:14, skipping insertion in model container [2023-11-19 04:54:14,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:13" (2/3) ... [2023-11-19 04:54:14,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf35e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:14, skipping insertion in model container [2023-11-19 04:54:14,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:14" (3/3) ... [2023-11-19 04:54:14,435 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1381.c [2023-11-19 04:54:14,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:54:14,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:54:14,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:54:14,528 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e0540b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:54:14,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:54:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:54:14,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:14,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:14,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:14,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash 927449971, now seen corresponding path program 1 times [2023-11-19 04:54:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:14,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970748457] [2023-11-19 04:54:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:14,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:14,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:14,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:54:14,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:54:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:14,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:54:14,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:14,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:14,757 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970748457] [2023-11-19 04:54:14,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970748457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:14,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:54:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18081821] [2023-11-19 04:54:14,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:54:14,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:14,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:54:14,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:54:14,817 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:14,837 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2023-11-19 04:54:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:54:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 04:54:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:14,848 INFO L225 Difference]: With dead ends: 32 [2023-11-19 04:54:14,849 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 04:54:14,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:54:14,857 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:14,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:54:14,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 04:54:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-19 04:54:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2023-11-19 04:54:14,895 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 10 [2023-11-19 04:54:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:14,896 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2023-11-19 04:54:14,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2023-11-19 04:54:14,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:54:14,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:14,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:14,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:15,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:15,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:15,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1499794425, now seen corresponding path program 1 times [2023-11-19 04:54:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:15,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632956283] [2023-11-19 04:54:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:15,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:15,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:54:15,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:54:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:15,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 04:54:15,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:15,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 04:54:15,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-11-19 04:54:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:15,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:54:15,760 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:15,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632956283] [2023-11-19 04:54:15,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632956283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:54:15,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:54:15,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 04:54:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256585673] [2023-11-19 04:54:15,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:54:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:54:15,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:54:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:54:15,765 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:16,087 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2023-11-19 04:54:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:54:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:54:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:16,088 INFO L225 Difference]: With dead ends: 14 [2023-11-19 04:54:16,088 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 04:54:16,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 04:54:16,090 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 11 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:16,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 24 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:54:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 04:54:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 04:54:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 04:54:16,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-11-19 04:54:16,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:16,093 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 04:54:16,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 04:54:16,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 04:54:16,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:54:16,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:16,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:54:16,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 04:54:16,363 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 04:54:16,363 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 25) no Hoare annotation was computed. [2023-11-19 04:54:16,363 INFO L895 garLoopResultBuilder]: At program point L21-1(lines 21 25) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_copysign_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start_copysign_float_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start_copysign_float_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start_copysign_float_~ix~0#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2023-11-19 04:54:16,364 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 53) no Hoare annotation was computed. [2023-11-19 04:54:16,364 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 04:54:16,364 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 37 56) no Hoare annotation was computed. [2023-11-19 04:54:16,364 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 04:54:16,364 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 04:54:16,364 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 30) no Hoare annotation was computed. [2023-11-19 04:54:16,365 INFO L895 garLoopResultBuilder]: At program point L26-1(lines 26 30) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_copysign_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) (exists ((currentRoundingMode RoundingMode)) (= (fp ((_ extract 31 31) |ULTIMATE.start_copysign_float_~ix~0#1|) ((_ extract 30 23) |ULTIMATE.start_copysign_float_~ix~0#1|) ((_ extract 22 0) |ULTIMATE.start_copysign_float_~ix~0#1|)) (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24))))) [2023-11-19 04:54:16,365 INFO L899 garLoopResultBuilder]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2023-11-19 04:54:16,365 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 51) no Hoare annotation was computed. [2023-11-19 04:54:16,365 INFO L899 garLoopResultBuilder]: For program point isnan_float_returnLabel#1(line 35) no Hoare annotation was computed. [2023-11-19 04:54:16,366 INFO L899 garLoopResultBuilder]: For program point copysign_float_returnLabel#1(lines 14 32) no Hoare annotation was computed. [2023-11-19 04:54:16,366 INFO L899 garLoopResultBuilder]: For program point L51(line 51) no Hoare annotation was computed. [2023-11-19 04:54:16,366 INFO L899 garLoopResultBuilder]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2023-11-19 04:54:16,366 INFO L895 garLoopResultBuilder]: At program point L16-2(lines 16 20) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_copysign_float_~x#1| (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)))) [2023-11-19 04:54:16,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 04:54:16,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:54:16,383 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated [2023-11-19 04:54:16,384 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp~32(~ix~0[31:31], ~ix~0[30:23], ~ix~0[22:0]) == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated [2023-11-19 04:54:16,385 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated [2023-11-19 04:54:16,385 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated [2023-11-19 04:54:16,385 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp~32(~ix~0[31:31], ~ix~0[30:23], ~ix~0[22:0]) == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated [2023-11-19 04:54:16,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:54:16 BoogieIcfgContainer [2023-11-19 04:54:16,386 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:54:16,387 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:54:16,387 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:54:16,387 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:54:16,388 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:14" (3/4) ... [2023-11-19 04:54:16,390 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 04:54:16,399 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 04:54:16,399 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 04:54:16,399 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 04:54:16,399 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 04:54:16,483 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:54:16,484 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 04:54:16,484 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:54:16,485 INFO L158 Benchmark]: Toolchain (without parser) took 2987.29ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 53.4MB in the beginning and 50.4MB in the end (delta: 3.0MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,485 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 77.6MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 80.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:54:16,486 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.20ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 41.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,486 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.08ms. Allocated memory is still 77.6MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,487 INFO L158 Benchmark]: Boogie Preprocessor took 67.61ms. Allocated memory is still 77.6MB. Free memory was 40.2MB in the beginning and 38.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,488 INFO L158 Benchmark]: RCFGBuilder took 453.61ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 38.6MB in the beginning and 71.7MB in the end (delta: -33.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,488 INFO L158 Benchmark]: TraceAbstraction took 1958.58ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 54.6MB in the end (delta: 16.5MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,489 INFO L158 Benchmark]: Witness Printer took 97.31ms. Allocated memory is still 102.8MB. Free memory was 54.6MB in the beginning and 50.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 04:54:16,491 INFO L338 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 77.6MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 80.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.20ms. Allocated memory is still 77.6MB. Free memory was 53.2MB in the beginning and 41.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.08ms. Allocated memory is still 77.6MB. Free memory was 41.9MB in the beginning and 40.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.61ms. Allocated memory is still 77.6MB. Free memory was 40.2MB in the beginning and 38.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 453.61ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 38.6MB in the beginning and 71.7MB in the end (delta: -33.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1958.58ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 54.6MB in the end (delta: 16.5MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Witness Printer took 97.31ms. Allocated memory is still 102.8MB. Free memory was 54.6MB in the beginning and 50.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp~32(~ix~0[31:31], ~ix~0[30:23], ~ix~0[22:0]) == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~x == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp~32(~ix~0[31:31], ~ix~0[30:23], ~ix~0[22:0]) == ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32())) could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 51]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 22 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 49 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 8 QuantifiedInterpolants, 97 SizeOfPredicates, 14 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-19 04:54:16,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4cc167f9-5a52-4521-a802-eac6145f3d10/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE