./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh --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 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:51:22,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:51:22,338 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:51:22,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:51:22,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:51:22,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:51:22,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:51:22,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:51:22,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:51:22,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:51:22,371 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:51:22,372 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:51:22,372 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:51:22,373 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:51:22,373 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:51:22,374 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:51:22,374 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:51:22,375 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:51:22,375 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:51:22,376 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:51:22,376 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:51:22,383 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:51:22,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:51:22,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:51:22,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:51:22,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:51:22,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:51:22,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:51:22,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:51:22,386 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:51:22,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:51:22,387 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:51:22,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:51:22,387 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:51:22,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:51:22,388 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:51:22,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:51:22,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:22,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:51:22,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:51:22,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:51:22,390 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:51:22,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:51:22,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:51:22,390 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:51:22,391 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:51:22,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:51:22,391 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_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2023-12-02 12:51:22,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:51:22,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:51:22,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:51:22,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:51:22,648 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:51:22,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2023-12-02 12:51:25,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:51:25,500 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:51:25,501 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2023-12-02 12:51:25,508 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data/dcb3a0bb9/d837969ab5b547a09019b37bd2fff7b2/FLAGb196426d2 [2023-12-02 12:51:25,520 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data/dcb3a0bb9/d837969ab5b547a09019b37bd2fff7b2 [2023-12-02 12:51:25,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:51:25,525 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:51:25,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:25,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:51:25,532 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:51:25,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c69b0ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25, skipping insertion in model container [2023-12-02 12:51:25,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:51:25,708 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_89851b3c-17a3-4a20-aac6-48a831f40673/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2023-12-02 12:51:25,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:25,721 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:51:25,740 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_89851b3c-17a3-4a20-aac6-48a831f40673/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2023-12-02 12:51:25,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:25,754 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:51:25,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25 WrapperNode [2023-12-02 12:51:25,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:25,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:25,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:51:25,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:51:25,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,784 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 103 [2023-12-02 12:51:25,785 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:25,786 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:51:25,786 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:51:25,786 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:51:25,792 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,795 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,801 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,806 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:51:25,809 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:51:25,809 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:51:25,809 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:51:25,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (1/1) ... [2023-12-02 12:51:25,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:25,836 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:51:25,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:51:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:51:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:51:25,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 12:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 12:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 12:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:51:25,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:51:25,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 12:51:25,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:51:25,956 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:51:25,958 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:51:26,175 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:51:26,294 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:51:26,295 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 12:51:26,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:26 BoogieIcfgContainer [2023-12-02 12:51:26,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:51:26,299 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:51:26,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:51:26,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:51:26,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:51:25" (1/3) ... [2023-12-02 12:51:26,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f292b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:26, skipping insertion in model container [2023-12-02 12:51:26,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:25" (2/3) ... [2023-12-02 12:51:26,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f292b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:26, skipping insertion in model container [2023-12-02 12:51:26,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:26" (3/3) ... [2023-12-02 12:51:26,305 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2023-12-02 12:51:26,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:51:26,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:51:26,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:51:26,384 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;@5498e2d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:51:26,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:51:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 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) [2023-12-02 12:51:26,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 12:51:26,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:26,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:26,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:26,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:26,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1544474364, now seen corresponding path program 1 times [2023-12-02 12:51:26,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:26,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474798874] [2023-12-02 12:51:26,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:26,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:26,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:51:26,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474798874] [2023-12-02 12:51:26,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474798874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:26,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:51:26,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970827260] [2023-12-02 12:51:26,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:26,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:51:26,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:51:26,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:51:26,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:51:26,561 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 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 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) [2023-12-02 12:51:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:26,593 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2023-12-02 12:51:26,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:51:26,596 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 [2023-12-02 12:51:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:26,603 INFO L225 Difference]: With dead ends: 31 [2023-12-02 12:51:26,603 INFO L226 Difference]: Without dead ends: 14 [2023-12-02 12:51:26,606 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 [2023-12-02 12:51:26,610 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:51:26,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-02 12:51:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-02 12:51:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2023-12-02 12:51:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2023-12-02 12:51:26,641 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2023-12-02 12:51:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:26,642 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-12-02 12:51:26,642 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) [2023-12-02 12:51:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2023-12-02 12:51:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 12:51:26,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:26,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:26,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:51:26,643 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:26,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:26,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1540907773, now seen corresponding path program 1 times [2023-12-02 12:51:26,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:51:26,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113600013] [2023-12-02 12:51:26,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:26,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:51:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:51:26,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:51:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:51:26,749 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:51:26,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:51:26,751 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 12:51:26,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:51:26,757 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 12:51:26,760 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:51:26,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:51:26 BoogieIcfgContainer [2023-12-02 12:51:26,780 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:51:26,781 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:51:26,781 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:51:26,782 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:51:26,782 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:26" (3/4) ... [2023-12-02 12:51:26,784 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:51:26,785 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:51:26,786 INFO L158 Benchmark]: Toolchain (without parser) took 1260.82ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 69.7MB in the end (delta: 30.7MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2023-12-02 12:51:26,787 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:51:26,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.69ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 89.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 12:51:26,788 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.87ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 87.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:51:26,789 INFO L158 Benchmark]: Boogie Preprocessor took 22.41ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 85.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:51:26,789 INFO L158 Benchmark]: RCFGBuilder took 488.02ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 98.4MB in the end (delta: -12.6MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2023-12-02 12:51:26,790 INFO L158 Benchmark]: TraceAbstraction took 481.83ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 69.7MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 12:51:26,790 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 142.6MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 46.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:51:26,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.69ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 89.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.87ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 87.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.41ms. Allocated memory is still 142.6MB. Free memory was 87.3MB in the beginning and 85.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 488.02ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 98.4MB in the end (delta: -12.6MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 481.83ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 69.7MB in the end (delta: 28.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 142.6MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 46.7kB). 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: 74]: 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 59, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L70] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000008, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000008] [L19] ieee_float_shape_type gf_u; [L20] EXPR gf_u.value = (x) [L21] EXPR gf_u.word [L21] EXPR (i0) = gf_u.word [L18-L22] { ieee_float_shape_type gf_u; gf_u.value = (x); (i0) = gf_u.word; } VAL [\old(x)=1000000000000000000000000000008, huge_ceil=1000000000000000000000000000000, i0=-8388608, x=1000000000000000000000000000008] [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000008, huge_ceil=1000000000000000000000000000000, i0=-8388608, i=2139095040, j0=128, x=1000000000000000000000000000008] [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [\old(x)=1000000000000000000000000000008, \result=1000000000000000000000000000008, huge_ceil=1000000000000000000000000000000, i0=-8388608, i=2139095040, j0=128, x=1000000000000000000000000000008] [L70] RET, EXPR ceil_float(x) [L70] float res = ceil_float(x); [L73] CALL, EXPR isnan_float(res) [L59] return x != x; [L73] RET, EXPR isnan_float(res) [L73] COND TRUE !isnan_float(res) [L74] reach_error() VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000008, x=1000000000000000000000000000008] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 11 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 11 mSDtfsCounter, 7 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=16occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 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 [2023-12-02 12:51:26,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh --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 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:51:28,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:51:28,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 12:51:28,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:51:28,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:51:28,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:51:28,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:51:28,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:51:28,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:51:28,798 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:51:28,799 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:51:28,799 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:51:28,800 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:51:28,801 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:51:28,801 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:51:28,802 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:51:28,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:51:28,803 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:51:28,804 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:51:28,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:51:28,805 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:51:28,805 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:51:28,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:51:28,806 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:51:28,806 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:51:28,807 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:51:28,807 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:51:28,807 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:51:28,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:51:28,808 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:51:28,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:51:28,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:51:28,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:51:28,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:51:28,810 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:28,810 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:51:28,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:51:28,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:51:28,811 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:51:28,811 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:51:28,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:51:28,812 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:51:28,812 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:51:28,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:51:28,812 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_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c301aadcf824cc95473e8bc31e84ff4ca7e703d59978c831f904d5646201155 [2023-12-02 12:51:29,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:51:29,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:51:29,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:51:29,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:51:29,141 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:51:29,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2023-12-02 12:51:31,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:51:32,036 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:51:32,036 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/sv-benchmarks/c/float-newlib/float_req_bl_1091.c [2023-12-02 12:51:32,044 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data/3b4e8a710/433dd8c0dd2c4d6b875bbd7cc09f435f/FLAGd9c4421ae [2023-12-02 12:51:32,056 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/data/3b4e8a710/433dd8c0dd2c4d6b875bbd7cc09f435f [2023-12-02 12:51:32,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:51:32,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:51:32,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:32,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:51:32,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:51:32,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,068 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49284966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32, skipping insertion in model container [2023-12-02 12:51:32,068 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:51:32,232 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_89851b3c-17a3-4a20-aac6-48a831f40673/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2023-12-02 12:51:32,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:32,250 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:51:32,272 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_89851b3c-17a3-4a20-aac6-48a831f40673/sv-benchmarks/c/float-newlib/float_req_bl_1091.c[1603,1616] [2023-12-02 12:51:32,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:51:32,290 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:51:32,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32 WrapperNode [2023-12-02 12:51:32,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:51:32,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:32,291 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:51:32,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:51:32,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,327 INFO L138 Inliner]: procedures = 19, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2023-12-02 12:51:32,327 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:51:32,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:51:32,328 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:51:32,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:51:32,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,351 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:51:32,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:51:32,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:51:32,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:51:32,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (1/1) ... [2023-12-02 12:51:32,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:51:32,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:51:32,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:51:32,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:51:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:51:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:51:32,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 12:51:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 12:51:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 12:51:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:51:32,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:51:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 12:51:32,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 12:51:32,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 12:51:32,505 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:51:32,507 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:51:32,973 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:51:32,998 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:51:32,998 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 12:51:32,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:32 BoogieIcfgContainer [2023-12-02 12:51:32,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:51:33,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:51:33,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:51:33,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:51:33,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:51:32" (1/3) ... [2023-12-02 12:51:33,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a76e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:33, skipping insertion in model container [2023-12-02 12:51:33,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:51:32" (2/3) ... [2023-12-02 12:51:33,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a76e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:51:33, skipping insertion in model container [2023-12-02 12:51:33,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:32" (3/3) ... [2023-12-02 12:51:33,008 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2023-12-02 12:51:33,028 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:51:33,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:51:33,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:51:33,083 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;@6685c6ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:51:33,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:51:33,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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) [2023-12-02 12:51:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 12:51:33,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:33,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:33,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:33,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:33,114 INFO L85 PathProgramCache]: Analyzing trace with hash 499641661, now seen corresponding path program 1 times [2023-12-02 12:51:33,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:51:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546581260] [2023-12-02 12:51:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:33,135 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 [2023-12-02 12:51:33,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:51:33,138 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 12:51:33,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:33,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 12:51:33,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:33,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:33,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:51:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546581260] [2023-12-02 12:51:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546581260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:33,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:51:33,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18512853] [2023-12-02 12:51:33,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:33,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:51:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:51:33,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:51:33,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:51:33,310 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-02 12:51:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:33,336 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2023-12-02 12:51:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:51:33,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2023-12-02 12:51:33,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:33,347 INFO L225 Difference]: With dead ends: 45 [2023-12-02 12:51:33,347 INFO L226 Difference]: Without dead ends: 21 [2023-12-02 12:51:33,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:51:33,354 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:33,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:51:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-02 12:51:33,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-02 12:51:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.45) internal successors, (29), 20 states have internal predecessors, (29), 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) [2023-12-02 12:51:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2023-12-02 12:51:33,386 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 8 [2023-12-02 12:51:33,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:33,387 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2023-12-02 12:51:33,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-12-02 12:51:33,387 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2023-12-02 12:51:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 12:51:33,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:33,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:33,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:33,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:33,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:33,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1852854572, now seen corresponding path program 1 times [2023-12-02 12:51:33,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:51:33,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481359611] [2023-12-02 12:51:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:33,592 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 [2023-12-02 12:51:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:51:33,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 12:51:33,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:33,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 12:51:33,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:33,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:33,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:51:33,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481359611] [2023-12-02 12:51:33,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481359611] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:33,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:51:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765594863] [2023-12-02 12:51:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:33,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:51:33,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:51:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:51:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:51:33,844 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-02 12:51:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:34,142 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2023-12-02 12:51:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:51:34,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-12-02 12:51:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:34,143 INFO L225 Difference]: With dead ends: 30 [2023-12-02 12:51:34,143 INFO L226 Difference]: Without dead ends: 16 [2023-12-02 12:51:34,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:51:34,145 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:34,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:51:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-02 12:51:34,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-02 12:51:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2023-12-02 12:51:34,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-12-02 12:51:34,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2023-12-02 12:51:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:34,150 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-12-02 12:51:34,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-12-02 12:51:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-12-02 12:51:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 12:51:34,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:51:34,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:51:34,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:34,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:51:34,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:51:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -397104471, now seen corresponding path program 1 times [2023-12-02 12:51:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:51:34,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961289294] [2023-12-02 12:51:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:51:34,354 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 [2023-12-02 12:51:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:51:34,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 12:51:34,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 (4)] Waiting until timeout for monitored process [2023-12-02 12:51:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:51:34,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:51:34,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:51:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:51:34,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:51:34,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:51:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961289294] [2023-12-02 12:51:34,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961289294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:51:34,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:51:34,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:51:34,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161301728] [2023-12-02 12:51:34,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:51:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:51:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:51:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:51:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:51:34,648 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2023-12-02 12:51:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:51:34,764 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2023-12-02 12:51:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:51:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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 [2023-12-02 12:51:34,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:51:34,765 INFO L225 Difference]: With dead ends: 16 [2023-12-02 12:51:34,765 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 12:51:34,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:51:34,767 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:51:34,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:51:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 12:51:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 12:51:34,769 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) [2023-12-02 12:51:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 12:51:34,769 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2023-12-02 12:51:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:51:34,770 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 12:51:34,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 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) [2023-12-02 12:51:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 12:51:34,770 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 12:51:34,773 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 12:51:34,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 (4)] Ended with exit code 0 [2023-12-02 12:51:34,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:51:34,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 12:51:34,988 INFO L899 garLoopResultBuilder]: For program point L27(lines 27 33) no Hoare annotation was computed. [2023-12-02 12:51:34,988 INFO L899 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2023-12-02 12:51:34,988 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 61 79) no Hoare annotation was computed. [2023-12-02 12:51:34,988 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 32) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point ceil_float_returnLabel#1(lines 15 56) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 48) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 12:51:34,989 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 49) no Hoare annotation was computed. [2023-12-02 12:51:34,990 INFO L899 garLoopResultBuilder]: For program point L50(lines 50 54) no Hoare annotation was computed. [2023-12-02 12:51:34,990 INFO L895 garLoopResultBuilder]: At program point L50-1(lines 50 54) the Hoare annotation is: false [2023-12-02 12:51:34,990 INFO L899 garLoopResultBuilder]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2023-12-02 12:51:34,990 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 12:51:34,990 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 42) no Hoare annotation was computed. [2023-12-02 12:51:34,990 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2023-12-02 12:51:34,990 INFO L899 garLoopResultBuilder]: For program point L26(lines 26 43) no Hoare annotation was computed. [2023-12-02 12:51:34,991 INFO L899 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2023-12-02 12:51:34,991 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 18 22) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_ceil_float_~x#1|)) [2023-12-02 12:51:34,991 INFO L899 garLoopResultBuilder]: For program point L18-3(lines 18 22) no Hoare annotation was computed. [2023-12-02 12:51:34,991 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 40) no Hoare annotation was computed. [2023-12-02 12:51:34,991 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 40) no Hoare annotation was computed. [2023-12-02 12:51:34,994 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 12:51:34,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:51:35,003 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32()) == ~x) could not be translated [2023-12-02 12:51:35,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:51:35 BoogieIcfgContainer [2023-12-02 12:51:35,005 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:51:35,006 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:51:35,006 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:51:35,006 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:51:35,007 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:51:32" (3/4) ... [2023-12-02 12:51:35,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 12:51:35,014 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-12-02 12:51:35,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-12-02 12:51:35,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 12:51:35,015 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 12:51:35,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:51:35,110 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 12:51:35,110 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:51:35,110 INFO L158 Benchmark]: Toolchain (without parser) took 3049.66ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 46.2MB in the end (delta: 50.0MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,111 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:51:35,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.58ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 84.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.26ms. Allocated memory is still 119.5MB. Free memory was 84.4MB in the beginning and 82.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,112 INFO L158 Benchmark]: Boogie Preprocessor took 36.16ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,112 INFO L158 Benchmark]: RCFGBuilder took 633.35ms. Allocated memory is still 119.5MB. Free memory was 80.8MB in the beginning and 67.3MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,112 INFO L158 Benchmark]: TraceAbstraction took 2004.18ms. Allocated memory is still 119.5MB. Free memory was 66.5MB in the beginning and 51.1MB in the end (delta: 15.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,113 INFO L158 Benchmark]: Witness Printer took 103.88ms. Allocated memory is still 119.5MB. Free memory was 51.1MB in the beginning and 46.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 12:51:35,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.58ms. Allocated memory is still 119.5MB. Free memory was 96.3MB in the beginning and 84.4MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.26ms. Allocated memory is still 119.5MB. Free memory was 84.4MB in the beginning and 82.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.16ms. Allocated memory is still 119.5MB. Free memory was 82.9MB in the beginning and 81.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 633.35ms. Allocated memory is still 119.5MB. Free memory was 80.8MB in the beginning and 67.3MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2004.18ms. Allocated memory is still 119.5MB. Free memory was 66.5MB in the beginning and 51.1MB in the end (delta: 15.5MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Witness Printer took 103.88ms. Allocated memory is still 119.5MB. Free memory was 51.1MB in the beginning and 46.2MB in the end (delta: 4.8MB). 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 :: ~fp.div~32(currentRoundingMode, ~Pluszero~32(), ~Pluszero~32()) == ~x) 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: 74]: 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, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 41 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 10 QuantifiedInterpolants, 117 SizeOfPredicates, 15 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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: 18]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2023-12-02 12:51:35,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89851b3c-17a3-4a20-aac6-48a831f40673/bin/utaipan-verify-nQ1chXbOIh/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