./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 adf694b6ddef665d6d08615d55edd3b888b46a164390930323ad37ea28078730 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:47:21,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:47:21,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:47:21,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:47:21,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:47:21,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:47:21,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:47:21,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:47:21,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:47:21,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:47:21,264 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:47:21,264 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:47:21,265 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:47:21,265 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:47:21,266 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:47:21,266 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:47:21,267 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:47:21,267 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:47:21,268 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:47:21,269 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:47:21,269 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:47:21,272 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:47:21,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:47:21,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:47:21,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:47:21,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:47:21,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:47:21,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:47:21,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:47:21,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:47:21,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:47:21,276 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:47:21,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:47:21,277 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:47:21,277 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:47:21,277 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:47:21,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:47:21,278 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:47:21,278 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:47:21,278 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:47:21,278 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:47:21,279 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:47:21,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:47:21,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:47:21,279 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:47:21,280 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:47:21,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:47:21,280 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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adf694b6ddef665d6d08615d55edd3b888b46a164390930323ad37ea28078730 [2023-12-02 16:47:21,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:47:21,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:47:21,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:47:21,501 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:47:21,502 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:47:21,503 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i [2023-12-02 16:47:24,222 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:47:24,416 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:47:24,417 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i [2023-12-02 16:47:24,424 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data/93e88a9d2/ea8326221f7146e0808a785667fa9fa8/FLAG7ea76555d [2023-12-02 16:47:24,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data/93e88a9d2/ea8326221f7146e0808a785667fa9fa8 [2023-12-02 16:47:24,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:47:24,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:47:24,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:47:24,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:47:24,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:47:24,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,448 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40abeaa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24, skipping insertion in model container [2023-12-02 16:47:24,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:47:24,604 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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i[913,926] [2023-12-02 16:47:24,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:47:24,655 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:47:24,665 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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i[913,926] [2023-12-02 16:47:24,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:47:24,696 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:47:24,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24 WrapperNode [2023-12-02 16:47:24,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:47:24,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:47:24,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:47:24,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:47:24,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,741 INFO L138 Inliner]: procedures = 26, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 132 [2023-12-02 16:47:24,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:47:24,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:47:24,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:47:24,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:47:24,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:47:24,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:47:24,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:47:24,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:47:24,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (1/1) ... [2023-12-02 16:47:24,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:47:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:47:24,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:47:24,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:47:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:47:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:47:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:47:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:47:24,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:47:24,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:47:24,917 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:47:24,919 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:47:25,197 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:47:25,393 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:47:25,393 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:47:25,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:47:25 BoogieIcfgContainer [2023-12-02 16:47:25,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:47:25,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:47:25,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:47:25,401 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:47:25,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:47:24" (1/3) ... [2023-12-02 16:47:25,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17e673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:47:25, skipping insertion in model container [2023-12-02 16:47:25,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:24" (2/3) ... [2023-12-02 16:47:25,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17e673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:47:25, skipping insertion in model container [2023-12-02 16:47:25,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:47:25" (3/3) ... [2023-12-02 16:47:25,403 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-83.i [2023-12-02 16:47:25,422 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:47:25,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:47:25,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:47:25,479 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;@29d9ba25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:47:25,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:47:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 16:47:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-02 16:47:25,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:25,492 INFO L195 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:47:25,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:47:25,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 931578697, now seen corresponding path program 1 times [2023-12-02 16:47:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:47:25,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723020427] [2023-12-02 16:47:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:25,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:47:25,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:47:25,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [805186276] [2023-12-02 16:47:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:25,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:47:25,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:47:25,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:47:25,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:47:25,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:47:25,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:47:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:47:25,849 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:47:25,851 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:47:25,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:47:25,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:47:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 16:47:26,060 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:47:26,063 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:47:26,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:47:26 BoogieIcfgContainer [2023-12-02 16:47:26,110 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:47:26,111 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:47:26,111 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:47:26,111 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:47:26,111 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:47:25" (3/4) ... [2023-12-02 16:47:26,113 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:47:26,114 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:47:26,115 INFO L158 Benchmark]: Toolchain (without parser) took 1674.48ms. Allocated memory is still 146.8MB. Free memory was 116.5MB in the beginning and 71.1MB in the end (delta: 45.4MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,115 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory was 103.9MB in the beginning and 103.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:47:26,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.59ms. Allocated memory is still 146.8MB. Free memory was 116.3MB in the beginning and 103.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.92ms. Allocated memory is still 146.8MB. Free memory was 103.6MB in the beginning and 100.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,117 INFO L158 Benchmark]: Boogie Preprocessor took 32.94ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 98.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,118 INFO L158 Benchmark]: RCFGBuilder took 618.78ms. Allocated memory is still 146.8MB. Free memory was 98.8MB in the beginning and 100.5MB in the end (delta: -1.8MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,118 INFO L158 Benchmark]: TraceAbstraction took 712.67ms. Allocated memory is still 146.8MB. Free memory was 100.0MB in the beginning and 71.7MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,119 INFO L158 Benchmark]: Witness Printer took 3.35ms. Allocated memory is still 146.8MB. Free memory was 71.7MB in the beginning and 71.1MB in the end (delta: 541.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 16:47:26,122 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory was 103.9MB in the beginning and 103.8MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.59ms. Allocated memory is still 146.8MB. Free memory was 116.3MB in the beginning and 103.8MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.92ms. Allocated memory is still 146.8MB. Free memory was 103.6MB in the beginning and 100.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.94ms. Allocated memory is still 146.8MB. Free memory was 100.6MB in the beginning and 98.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.78ms. Allocated memory is still 146.8MB. Free memory was 98.8MB in the beginning and 100.5MB in the end (delta: -1.8MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. * TraceAbstraction took 712.67ms. Allocated memory is still 146.8MB. Free memory was 100.0MB in the beginning and 71.7MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.35ms. Allocated memory is still 146.8MB. Free memory was 71.7MB in the beginning and 71.1MB in the end (delta: 541.5kB). Peak memory consumption was 2.1MB. 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: 19]: 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 someBinaryDOUBLEComparisonOperation at line 63, overapproximation of bitwiseOr at line 52, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 128; [L23] unsigned char var_1_2 = 0; [L24] unsigned short int var_1_3 = 25; [L25] unsigned char var_1_4 = 4; [L26] double var_1_8 = 127.625; [L27] double var_1_10 = 0.8; [L28] double var_1_11 = 128.75; [L29] double var_1_12 = 24.8; [L30] signed short int var_1_14 = -128; [L31] signed char var_1_15 = 64; [L32] signed char var_1_16 = 5; [L33] double var_1_17 = 1.5; [L34] unsigned short int last_1_var_1_1 = 128; [L93] isInitial = 1 [L94] FCALL initially() [L95] COND TRUE 1 [L96] CALL updateLastVariables() [L86] last_1_var_1_1 = var_1_1 [L96] RET updateLastVariables() [L97] CALL updateVariables() [L67] var_1_2 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_3=25, var_1_4=4, var_1_8=1021/8] [L69] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=25, var_1_4=4, var_1_8=1021/8] [L70] var_1_3 = __VERIFIER_nondet_ushort() [L71] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_4=4, var_1_8=1021/8] [L72] CALL assume_abort_if_not(var_1_3 <= 65534) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=4, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_3 <= 65534) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=4, var_1_8=1021/8] [L73] var_1_4 = __VERIFIER_nondet_uchar() [L74] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_8=1021/8] [L75] CALL assume_abort_if_not(var_1_4 <= 255) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_4 <= 255) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_8=1021/8] [L76] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, last_1_var_1_1=128, var_1_10=4/5, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L77] var_1_10 = __VERIFIER_nondet_double() [L78] CALL assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not((var_1_10 >= -461168.6018427382800e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 4611686.018427382800e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=128, var_1_11=515/4, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L79] var_1_11 = __VERIFIER_nondet_double() [L80] CALL assume_abort_if_not((var_1_11 >= -461168.6018427382800e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not((var_1_11 >= -461168.6018427382800e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 4611686.018427382800e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_1=128, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=5, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L81] var_1_16 = __VERIFIER_nondet_char() [L82] CALL assume_abort_if_not(var_1_16 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_16 >= -127) VAL [isInitial=1, last_1_var_1_1=128, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L83] CALL assume_abort_if_not(var_1_16 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_1=128, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(var_1_16 <= 126) VAL [isInitial=1, last_1_var_1_1=128, var_1_12=124/5, var_1_14=-128, var_1_15=64, var_1_16=126, var_1_17=3/2, var_1_1=128, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=1021/8] [L97] RET updateVariables() [L98] CALL step() [L38] var_1_14 = 200 [L39] var_1_15 = var_1_16 [L40] var_1_17 = var_1_10 [L41] signed long int stepLocal_0 = var_1_3 / var_1_4; [L42] COND TRUE \read(var_1_2) [L43] var_1_1 = (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))) [L51] signed long int stepLocal_2 = var_1_3 + var_1_1; [L52] EXPR var_1_14 ^ var_1_15 [L52] signed long int stepLocal_1 = var_1_14 ^ var_1_15; [L53] COND FALSE !(var_1_15 <= stepLocal_2) [L60] var_1_8 = var_1_10 [L62] COND FALSE !(var_1_15 > var_1_15) [L98] RET step() [L99] CALL, EXPR property() [L89] EXPR (var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((last_1_var_1_1 * var_1_15)) < ((~ last_1_var_1_1))) ? ((last_1_var_1_1 * var_1_15)) : ((~ last_1_var_1_1))))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) var_1_3)))) && ((var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((double) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((double) var_1_11))) : (var_1_8 == ((double) var_1_10))) [L89] EXPR (var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((double) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((double) var_1_11))) : (var_1_8 == ((double) var_1_10)) [L89] EXPR (var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((last_1_var_1_1 * var_1_15)) < ((~ last_1_var_1_1))) ? ((last_1_var_1_1 * var_1_15)) : ((~ last_1_var_1_1))))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) var_1_3)))) && ((var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((double) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((double) var_1_11))) : (var_1_8 == ((double) var_1_10))) [L89-L90] return (((((var_1_2 ? (var_1_1 == ((unsigned short int) (((((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) < 0 ) ? -((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))) : ((((var_1_3) < 0 ) ? -(var_1_3) : (var_1_3))))))) : (((var_1_3 / var_1_4) >= (((((last_1_var_1_1 * var_1_15)) < ((~ last_1_var_1_1))) ? ((last_1_var_1_1 * var_1_15)) : ((~ last_1_var_1_1))))) ? (var_1_1 == ((unsigned short int) var_1_4)) : (var_1_1 == ((unsigned short int) var_1_3)))) && ((var_1_15 <= (var_1_3 + var_1_1)) ? ((var_1_1 == (var_1_14 ^ var_1_15)) ? (var_1_8 == ((double) (((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10))) + var_1_11))) : (var_1_8 == ((double) var_1_11))) : (var_1_8 == ((double) var_1_10)))) && ((var_1_15 > var_1_15) ? (var_1_12 == ((double) ((((var_1_11) < (var_1_10)) ? (var_1_11) : (var_1_10))))) : 1)) && (var_1_14 == ((signed short int) 200))) && (var_1_15 == ((signed char) var_1_16))) && (var_1_17 == ((double) var_1_10)) ; [L99] RET, EXPR property() [L99] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=128, var_1_10=2, var_1_11=0, var_1_12=124/5, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=2, var_1_1=0, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_1=128, var_1_10=2, var_1_11=0, var_1_12=124/5, var_1_14=200, var_1_15=126, var_1_16=126, var_1_17=2, var_1_1=0, var_1_2=1, var_1_3=0, var_1_4=1, var_1_8=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 11, 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=26occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 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 16:47:26,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 adf694b6ddef665d6d08615d55edd3b888b46a164390930323ad37ea28078730 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:47:28,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:47:28,209 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:47:28,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:47:28,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:47:28,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:47:28,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:47:28,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:47:28,252 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:47:28,253 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:47:28,253 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:47:28,254 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:47:28,254 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:47:28,255 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:47:28,255 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:47:28,256 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:47:28,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:47:28,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:47:28,258 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:47:28,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:47:28,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:47:28,259 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:47:28,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:47:28,260 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:47:28,260 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:47:28,261 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:47:28,261 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:47:28,262 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:47:28,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:47:28,262 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:47:28,263 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:47:28,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:47:28,264 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:47:28,264 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:47:28,265 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:47:28,265 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:47:28,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:47:28,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:47:28,266 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:47:28,266 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:47:28,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:47:28,266 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:47:28,267 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:47:28,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:47:28,267 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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adf694b6ddef665d6d08615d55edd3b888b46a164390930323ad37ea28078730 [2023-12-02 16:47:28,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:47:28,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:47:28,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:47:28,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:47:28,591 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:47:28,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i [2023-12-02 16:47:31,389 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:47:31,618 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:47:31,619 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i [2023-12-02 16:47:31,629 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data/c21eaec9a/9843e72307bd47188a8b0abb0d7f05e9/FLAGcdf200b05 [2023-12-02 16:47:31,645 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/data/c21eaec9a/9843e72307bd47188a8b0abb0d7f05e9 [2023-12-02 16:47:31,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:47:31,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:47:31,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:47:31,650 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:47:31,656 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:47:31,657 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:31,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5804a3b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31, skipping insertion in model container [2023-12-02 16:47:31,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:31,686 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:47:31,833 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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i[913,926] [2023-12-02 16:47:31,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:47:31,886 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:47:31,899 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_be62aef1-04a7-49af-a9a0-0ba6325d55c3/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-83.i[913,926] [2023-12-02 16:47:31,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:47:31,940 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:47:31,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31 WrapperNode [2023-12-02 16:47:31,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:47:31,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:47:31,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:47:31,942 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:47:31,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:31,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:31,985 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-12-02 16:47:31,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:47:31,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:47:31,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:47:31,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:47:31,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:31,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,036 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:47:32,037 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:47:32,037 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:47:32,037 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:47:32,038 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (1/1) ... [2023-12-02 16:47:32,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:47:32,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:47:32,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:47:32,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:47:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:47:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:47:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:47:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:47:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:47:32,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:47:32,173 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:47:32,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:47:33,079 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:47:33,128 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:47:33,129 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:47:33,129 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:47:33 BoogieIcfgContainer [2023-12-02 16:47:33,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:47:33,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:47:33,132 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:47:33,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:47:33,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:47:31" (1/3) ... [2023-12-02 16:47:33,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed5a97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:47:33, skipping insertion in model container [2023-12-02 16:47:33,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:47:31" (2/3) ... [2023-12-02 16:47:33,136 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ed5a97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:47:33, skipping insertion in model container [2023-12-02 16:47:33,136 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:47:33" (3/3) ... [2023-12-02 16:47:33,137 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-83.i [2023-12-02 16:47:33,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:47:33,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:47:33,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:47:33,207 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;@6c19d548, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:47:33,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:47:33,211 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 16:47:33,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 16:47:33,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:33,222 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:47:33,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:47:33,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1627200233, now seen corresponding path program 1 times [2023-12-02 16:47:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:47:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918887507] [2023-12-02 16:47:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:33,243 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 16:47:33,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:47:33,244 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 16:47:33,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 16:47:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:33,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:47:33,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:47:33,498 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-02 16:47:33,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:47:33,499 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:47:33,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918887507] [2023-12-02 16:47:33,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918887507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:47:33,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:47:33,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:47:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720322145] [2023-12-02 16:47:33,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:47:33,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:47:33,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:47:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:47:33,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:47:33,541 INFO L87 Difference]: Start difference. First operand has 36 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 16:47:33,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:47:33,821 INFO L93 Difference]: Finished difference Result 69 states and 117 transitions. [2023-12-02 16:47:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:47:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 70 [2023-12-02 16:47:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:47:33,844 INFO L225 Difference]: With dead ends: 69 [2023-12-02 16:47:33,844 INFO L226 Difference]: Without dead ends: 34 [2023-12-02 16:47:33,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 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 16:47:33,851 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:47:33,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 16:47:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-12-02 16:47:33,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-12-02 16:47:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 16:47:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2023-12-02 16:47:33,896 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 70 [2023-12-02 16:47:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:47:33,896 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2023-12-02 16:47:33,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-12-02 16:47:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2023-12-02 16:47:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 16:47:33,900 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:47:33,901 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:47:33,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 16:47:34,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 16:47:34,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:47:34,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:47:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1308179041, now seen corresponding path program 1 times [2023-12-02 16:47:34,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:47:34,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762758140] [2023-12-02 16:47:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:47:34,106 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 16:47:34,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:47:34,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 16:47:34,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be62aef1-04a7-49af-a9a0-0ba6325d55c3/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 16:47:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:47:34,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 16:47:34,339 INFO L285 TraceCheckSpWp]: Computing forward predicates...