./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float1.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_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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_b4e6e644-5313-4936-bc8d-2aee30fd5559/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 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:57:01,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:57:02,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:57:02,057 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:57:02,058 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:57:02,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:57:02,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:57:02,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:57:02,082 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:57:02,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:57:02,083 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:57:02,083 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:57:02,084 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:57:02,084 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:57:02,085 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:57:02,085 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:57:02,086 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:57:02,086 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:57:02,087 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:57:02,087 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:57:02,088 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:57:02,089 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:57:02,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:57:02,090 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:57:02,090 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:57:02,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:57:02,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:57:02,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:57:02,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:57:02,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:57:02,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:57:02,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:57:02,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:57:02,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:57:02,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:57:02,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:57:02,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:57:02,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:57:02,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:57:02,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:57:02,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:57:02,095 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:57:02,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:57:02,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:57:02,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:57:02,096 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:57:02,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:57:02,096 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 [2023-12-02 17:57:02,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:57:02,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:57:02,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:57:02,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:57:02,323 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:57:02,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2023-12-02 17:57:05,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:57:05,184 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:57:05,185 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c [2023-12-02 17:57:05,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data/730dbbcb5/49ec2bad00944c57a05d9084b3c6d9e7/FLAGf58ea8437 [2023-12-02 17:57:05,205 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data/730dbbcb5/49ec2bad00944c57a05d9084b3c6d9e7 [2023-12-02 17:57:05,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:57:05,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:57:05,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:57:05,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:57:05,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:57:05,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d20b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05, skipping insertion in model container [2023-12-02 17:57:05,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,237 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:57:05,386 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2023-12-02 17:57:05,391 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2023-12-02 17:57:05,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:57:05,404 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:57:05,417 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2023-12-02 17:57:05,418 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2023-12-02 17:57:05,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:57:05,433 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:57:05,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05 WrapperNode [2023-12-02 17:57:05,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:57:05,435 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:57:05,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:57:05,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:57:05,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,464 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-12-02 17:57:05,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:57:05,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:57:05,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:57:05,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:57:05,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:57:05,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:57:05,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:57:05,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:57:05,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (1/1) ... [2023-12-02 17:57:05,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:57:05,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:57:05,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:57:05,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:57:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:57:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:57:05,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:57:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:57:05,594 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:57:05,595 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:57:05,662 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:57:05,680 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:57:05,680 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:57:05,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:05 BoogieIcfgContainer [2023-12-02 17:57:05,682 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:57:05,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:57:05,685 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:57:05,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:57:05,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:57:05" (1/3) ... [2023-12-02 17:57:05,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5067d8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:57:05, skipping insertion in model container [2023-12-02 17:57:05,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:05" (2/3) ... [2023-12-02 17:57:05,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5067d8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:57:05, skipping insertion in model container [2023-12-02 17:57:05,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:05" (3/3) ... [2023-12-02 17:57:05,692 INFO L112 eAbstractionObserver]: Analyzing ICFG float1.c [2023-12-02 17:57:05,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:57:05,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:57:05,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:57:05,756 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;@55a6413f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:57:05,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:57:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 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 17:57:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:57:05,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:57:05,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:57:05,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:57:05,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:57:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 51094, now seen corresponding path program 1 times [2023-12-02 17:57:05,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:57:05,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946227884] [2023-12-02 17:57:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:57:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:57:05,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:57:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:57:05,890 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:57:05,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:57:05,894 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 17:57:05,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 17:57:05,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:57:05,900 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:57:05,905 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:57:05,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:57:05 BoogieIcfgContainer [2023-12-02 17:57:05,919 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:57:05,919 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:57:05,919 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:57:05,920 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:57:05,920 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:05" (3/4) ... [2023-12-02 17:57:05,922 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:57:05,923 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:57:05,924 INFO L158 Benchmark]: Toolchain (without parser) took 714.99ms. Allocated memory is still 169.9MB. Free memory was 128.7MB in the beginning and 94.1MB in the end (delta: 34.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-12-02 17:57:05,925 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:57:05,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.68ms. Allocated memory is still 169.9MB. Free memory was 128.7MB in the beginning and 118.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:57:05,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.27ms. Allocated memory is still 169.9MB. Free memory was 118.7MB in the beginning and 117.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:57:05,926 INFO L158 Benchmark]: Boogie Preprocessor took 15.58ms. Allocated memory is still 169.9MB. Free memory was 117.2MB in the beginning and 116.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:57:05,927 INFO L158 Benchmark]: RCFGBuilder took 201.08ms. Allocated memory is still 169.9MB. Free memory was 116.2MB in the beginning and 107.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 17:57:05,928 INFO L158 Benchmark]: TraceAbstraction took 233.72ms. Allocated memory is still 169.9MB. Free memory was 106.7MB in the beginning and 94.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 17:57:05,928 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 169.9MB. Free memory was 94.6MB in the beginning and 94.1MB in the end (delta: 493.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:57:05,932 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 107.0MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.68ms. Allocated memory is still 169.9MB. Free memory was 128.7MB in the beginning and 118.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.27ms. Allocated memory is still 169.9MB. Free memory was 118.7MB in the beginning and 117.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.58ms. Allocated memory is still 169.9MB. Free memory was 117.2MB in the beginning and 116.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 201.08ms. Allocated memory is still 169.9MB. Free memory was 116.2MB in the beginning and 107.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 233.72ms. Allocated memory is still 169.9MB. Free memory was 106.7MB in the beginning and 94.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 169.9MB. Free memory was 94.6MB in the beginning and 94.1MB in the end (delta: 493.2kB). 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: 12]: 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 to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) VAL [y=49] [L12] reach_error() VAL [y=49] - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 17:57:05,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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_b4e6e644-5313-4936-bc8d-2aee30fd5559/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 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:57:07,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:57:07,903 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:57:07,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:57:07,909 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:57:07,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:57:07,934 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:57:07,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:57:07,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:57:07,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:57:07,936 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:57:07,937 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:57:07,938 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:57:07,938 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:57:07,939 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:57:07,939 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:57:07,940 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:57:07,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:57:07,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:57:07,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:57:07,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:57:07,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:57:07,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:57:07,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:57:07,944 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:57:07,945 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:57:07,945 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:57:07,945 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:57:07,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:57:07,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:57:07,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:57:07,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:57:07,947 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:57:07,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:57:07,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:57:07,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:57:07,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:57:07,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:57:07,949 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:57:07,949 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:57:07,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:57:07,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:57:07,950 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:57:07,950 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:57:07,950 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40f0987d901db247b49723cd7ff4aa66943e9671f8ac5275af8edcf28fe04092 [2023-12-02 17:57:08,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:57:08,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:57:08,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:57:08,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:57:08,249 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:57:08,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/floats-cbmc-regression/float1.c [2023-12-02 17:57:11,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:57:11,202 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:57:11,203 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c [2023-12-02 17:57:11,209 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data/78b76b57e/5d885b3247c24218b55b1b830dda8ab5/FLAGf69c6bb50 [2023-12-02 17:57:11,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/data/78b76b57e/5d885b3247c24218b55b1b830dda8ab5 [2023-12-02 17:57:11,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:57:11,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:57:11,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:57:11,225 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:57:11,230 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:57:11,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76307731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11, skipping insertion in model container [2023-12-02 17:57:11,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:57:11,362 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2023-12-02 17:57:11,366 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2023-12-02 17:57:11,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:57:11,380 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:57:11,391 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[371,384] [2023-12-02 17:57:11,392 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_b4e6e644-5313-4936-bc8d-2aee30fd5559/sv-benchmarks/c/floats-cbmc-regression/float1.c[525,538] [2023-12-02 17:57:11,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:57:11,405 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:57:11,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11 WrapperNode [2023-12-02 17:57:11,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:57:11,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:57:11,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:57:11,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:57:11,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,433 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-12-02 17:57:11,434 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:57:11,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:57:11,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:57:11,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:57:11,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,451 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,453 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,455 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:57:11,460 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:57:11,460 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:57:11,460 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:57:11,461 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (1/1) ... [2023-12-02 17:57:11,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:57:11,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:57:11,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:57:11,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:57:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:57:11,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:57:11,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:57:11,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:57:11,613 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:57:11,615 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:57:12,125 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:57:12,152 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:57:12,153 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-02 17:57:12,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:12 BoogieIcfgContainer [2023-12-02 17:57:12,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:57:12,156 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:57:12,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:57:12,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:57:12,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:57:11" (1/3) ... [2023-12-02 17:57:12,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255bace8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:57:12, skipping insertion in model container [2023-12-02 17:57:12,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:57:11" (2/3) ... [2023-12-02 17:57:12,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255bace8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:57:12, skipping insertion in model container [2023-12-02 17:57:12,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:12" (3/3) ... [2023-12-02 17:57:12,161 INFO L112 eAbstractionObserver]: Analyzing ICFG float1.c [2023-12-02 17:57:12,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:57:12,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:57:12,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:57:12,222 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;@4cc66f8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:57:12,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:57:12,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 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 17:57:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 17:57:12,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:57:12,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 17:57:12,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:57:12,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:57:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 51094, now seen corresponding path program 1 times [2023-12-02 17:57:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:57:12,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140604707] [2023-12-02 17:57:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:57:12,250 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 17:57:12,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:57:12,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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 17:57:12,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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 17:57:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:57:12,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:57:12,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:57:12,450 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 17:57:12,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:57:12,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:57:12,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140604707] [2023-12-02 17:57:12,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140604707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:57:12,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:57:12,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:57:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269808697] [2023-12-02 17:57:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:57:12,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:57:12,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:57:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:57:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:57:12,493 INFO L87 Difference]: Start difference. First operand has 10 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 9 states have internal predecessors, (11), 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 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 17:57:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:57:12,742 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-12-02 17:57:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:57:12,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-12-02 17:57:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:57:12,750 INFO L225 Difference]: With dead ends: 14 [2023-12-02 17:57:12,750 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:57:12,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:57:12,756 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:57:12,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:57:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:57:12,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:57:12,774 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 17:57:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:57:12,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2023-12-02 17:57:12,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:57:12,775 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:57:12,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 17:57:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:57:12,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:57:12,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 17:57:12,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 17:57:12,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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 17:57:12,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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 17:57:12,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:57:12,988 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:57:12,988 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-12-02 17:57:12,988 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-12-02 17:57:12,989 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-02 17:57:12,989 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-12-02 17:57:12,989 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-12-02 17:57:12,989 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2023-12-02 17:57:12,989 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:57:12,989 INFO L899 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2023-12-02 17:57:12,990 INFO L899 garLoopResultBuilder]: For program point L4(lines 4 20) no Hoare annotation was computed. [2023-12-02 17:57:12,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:57:12,995 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:57:13,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:57:13 BoogieIcfgContainer [2023-12-02 17:57:13,001 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:57:13,001 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:57:13,002 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:57:13,002 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:57:13,002 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:57:12" (3/4) ... [2023-12-02 17:57:13,004 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:57:13,010 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 17:57:13,010 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 17:57:13,011 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-12-02 17:57:13,011 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:57:13,085 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:57:13,085 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:57:13,085 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:57:13,086 INFO L158 Benchmark]: Toolchain (without parser) took 1861.58ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 50.7MB in the beginning and 70.8MB in the end (delta: -20.0MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-12-02 17:57:13,087 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:57:13,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.71ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 39.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 17:57:13,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.28ms. Allocated memory is still 73.4MB. Free memory was 39.7MB in the beginning and 38.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:57:13,088 INFO L158 Benchmark]: Boogie Preprocessor took 24.71ms. Allocated memory is still 73.4MB. Free memory was 38.4MB in the beginning and 37.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:57:13,089 INFO L158 Benchmark]: RCFGBuilder took 693.90ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 46.8MB in the end (delta: -9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:57:13,089 INFO L158 Benchmark]: TraceAbstraction took 844.84ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 46.0MB in the beginning and 74.6MB in the end (delta: -28.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2023-12-02 17:57:13,090 INFO L158 Benchmark]: Witness Printer took 84.11ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 70.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:57:13,092 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 49.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.71ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 39.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.28ms. Allocated memory is still 73.4MB. Free memory was 39.7MB in the beginning and 38.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.71ms. Allocated memory is still 73.4MB. Free memory was 38.4MB in the beginning and 37.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 693.90ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 46.8MB in the end (delta: -9.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 844.84ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 46.0MB in the beginning and 74.6MB in the end (delta: -28.6MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Witness Printer took 84.11ms. Allocated memory is still 102.8MB. Free memory was 74.6MB in the beginning and 70.8MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 1 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 3 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 4 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-02 17:57:13,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4e6e644-5313-4936-bc8d-2aee30fd5559/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