./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire --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 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:05,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:05,815 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:30:05,822 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:05,823 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:05,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:05,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:05,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:05,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:05,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:05,855 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:05,856 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:05,857 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:05,857 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:05,858 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:05,858 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:05,859 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:05,859 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:05,860 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:05,861 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:05,861 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:05,862 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:05,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:05,864 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:05,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:30:05,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:05,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:30:05,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:05,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:05,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:05,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:05,868 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:30:05,869 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:05,869 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:05,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:05,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:05,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:05,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:05,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:05,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:05,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:05,872 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:05,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:05,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:05,873 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:05,873 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:05,874 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:05,874 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_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 [2023-11-23 21:30:06,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:06,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:06,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:06,171 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:06,171 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:06,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-23 21:30:09,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:09,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:09,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-23 21:30:09,837 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data/a3ca674b5/0289dad18c964b7ebcc39edb3e3cf5bb/FLAGecdb34aae [2023-11-23 21:30:09,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data/a3ca674b5/0289dad18c964b7ebcc39edb3e3cf5bb [2023-11-23 21:30:09,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:09,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:09,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:09,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:09,879 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:09,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:09" (1/1) ... [2023-11-23 21:30:09,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ce9ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:09, skipping insertion in model container [2023-11-23 21:30:09,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:09" (1/1) ... [2023-11-23 21:30:09,923 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:10,105 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_de3c7228-4938-491a-babf-57f50144aa40/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-23 21:30:10,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:10,205 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:10,222 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_de3c7228-4938-491a-babf-57f50144aa40/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-23 21:30:10,259 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:10,283 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:10,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10 WrapperNode [2023-11-23 21:30:10,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:10,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:10,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:10,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:10,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,368 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2023-11-23 21:30:10,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:10,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:10,369 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:10,369 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:10,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,425 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,431 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:10,432 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:10,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:10,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:10,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (1/1) ... [2023-11-23 21:30:10,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:10,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:10,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:10,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:10,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:10,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:30:10,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:30:10,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:30:10,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:10,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:10,600 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:10,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:10,920 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:11,214 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:11,214 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:30:11,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:11 BoogieIcfgContainer [2023-11-23 21:30:11,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:11,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:11,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:11,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:11,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:09" (1/3) ... [2023-11-23 21:30:11,224 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daba5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:11, skipping insertion in model container [2023-11-23 21:30:11,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:10" (2/3) ... [2023-11-23 21:30:11,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4daba5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:11, skipping insertion in model container [2023-11-23 21:30:11,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:11" (3/3) ... [2023-11-23 21:30:11,226 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-23 21:30:11,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:11,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:30:11,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:11,303 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;@29411a0a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:11,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:30:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:30:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:30:11,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:11,320 INFO L195 NwaCegarLoop]: trace histogram [13, 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] [2023-11-23 21:30:11,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:11,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1647342275, now seen corresponding path program 1 times [2023-11-23 21:30:11,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:11,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502209421] [2023-11-23 21:30:11,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:11,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:30:11,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:30:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:30:11,949 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:30:11,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:30:11,952 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:30:11,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:30:11,960 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:30:11,968 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:30:12,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:30:12 BoogieIcfgContainer [2023-11-23 21:30:12,025 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:30:12,025 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:30:12,025 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:30:12,026 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:30:12,026 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:11" (3/4) ... [2023-11-23 21:30:12,029 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:30:12,030 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:30:12,031 INFO L158 Benchmark]: Toolchain (without parser) took 2165.14ms. Allocated memory is still 188.7MB. Free memory was 148.7MB in the beginning and 148.5MB in the end (delta: 229.0kB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,032 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 136.3MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:30:12,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.45ms. Allocated memory is still 188.7MB. Free memory was 147.8MB in the beginning and 135.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.65ms. Allocated memory is still 188.7MB. Free memory was 135.2MB in the beginning and 132.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,034 INFO L158 Benchmark]: Boogie Preprocessor took 61.74ms. Allocated memory is still 188.7MB. Free memory was 132.2MB in the beginning and 131.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,034 INFO L158 Benchmark]: RCFGBuilder took 785.19ms. Allocated memory is still 188.7MB. Free memory was 131.0MB in the beginning and 92.3MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,035 INFO L158 Benchmark]: TraceAbstraction took 805.65ms. Allocated memory is still 188.7MB. Free memory was 92.3MB in the beginning and 149.5MB in the end (delta: -57.2MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,036 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 148.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:30:12,040 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 136.3MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.45ms. Allocated memory is still 188.7MB. Free memory was 147.8MB in the beginning and 135.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.65ms. Allocated memory is still 188.7MB. Free memory was 135.2MB in the beginning and 132.2MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.74ms. Allocated memory is still 188.7MB. Free memory was 132.2MB in the beginning and 131.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 785.19ms. Allocated memory is still 188.7MB. Free memory was 131.0MB in the beginning and 92.3MB in the end (delta: 38.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 805.65ms. Allocated memory is still 188.7MB. Free memory was 92.3MB in the beginning and 149.5MB in the end (delta: -57.2MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 148.5MB in the end (delta: 1.1MB). 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 77, overapproximation of shiftLeft at line 40. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 0; [L23] unsigned char var_1_2 = 0; [L24] unsigned short int var_1_3 = 1; [L25] unsigned short int var_1_4 = 19138; [L26] unsigned short int var_1_5 = 0; [L27] signed char var_1_6 = 25; [L28] signed long int var_1_7 = -50; [L29] double var_1_8 = 8.3; [L30] unsigned char var_1_9 = 128; [L31] unsigned char var_1_10 = 1; [L32] double var_1_11 = 256.2; [L81] isInitial = 1 [L82] FCALL initially() [L83] COND TRUE 1 [L84] FCALL updateLastVariables() [L85] CALL updateVariables() [L53] var_1_2 = __VERIFIER_nondet_uchar() [L54] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L54] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L55] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L56] var_1_3 = __VERIFIER_nondet_ushort() [L57] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L57] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L58] CALL assume_abort_if_not(var_1_3 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_3 <= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=19138, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L59] var_1_4 = __VERIFIER_nondet_ushort() [L60] CALL assume_abort_if_not(var_1_4 >= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L60] RET assume_abort_if_not(var_1_4 >= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L61] CALL assume_abort_if_not(var_1_4 <= 32767) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not(var_1_4 <= 32767) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L62] var_1_5 = __VERIFIER_nondet_ushort() [L63] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L64] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=128] [L65] var_1_9 = __VERIFIER_nondet_uchar() [L66] CALL assume_abort_if_not(var_1_9 >= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_9 >= 127) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L67] CALL assume_abort_if_not(var_1_9 <= 255) VAL [\old(cond)=1, isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_9 <= 255) VAL [isInitial=1, var_1_10=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L68] var_1_10 = __VERIFIER_nondet_uchar() [L69] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L70] CALL assume_abort_if_not(var_1_10 <= 127) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_10 <= 127) VAL [isInitial=1, var_1_10=5, var_1_11=1281/5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L71] var_1_11 = __VERIFIER_nondet_double() [L72] CALL assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=5, var_1_1=0, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=-50, var_1_8=83/10, var_1_9=127] [L85] RET updateVariables() [L86] CALL step() [L36] COND TRUE \read(var_1_2) [L37] var_1_1 = ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)) [L39] unsigned short int stepLocal_0 = var_1_4; [L40] EXPR var_1_5 << var_1_1 [L40] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) [L40] COND FALSE !(stepLocal_0 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) [L43] var_1_7 = (var_1_5 + (var_1_1 + var_1_4)) [L45] COND TRUE (var_1_9 - ((((5) > (var_1_10)) ? (5) : (var_1_10)))) >= var_1_3 [L46] var_1_8 = var_1_11 [L48] COND FALSE !(var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) [L86] RET step() [L87] CALL, EXPR property() [L77] EXPR ((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4))))) [L77] EXPR var_1_5 << var_1_1 [L77] EXPR ((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1)) [L77] EXPR ((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4))))) [L77-L78] return (((var_1_2 ? (var_1_1 == ((unsigned short int) ((17222 - var_1_3) + (((((29916) < (var_1_4)) ? (29916) : (var_1_4))) - var_1_5)))) : 1) && ((var_1_2 && (var_1_4 >= (var_1_3 + var_1_7))) ? (var_1_6 == ((signed char) 8)) : 1)) && ((var_1_4 <= ((((var_1_3) > ((var_1_5 << var_1_1))) ? (var_1_3) : ((var_1_5 << var_1_1))))) ? (var_1_7 == ((signed long int) (((((var_1_5 - var_1_3)) < (var_1_4)) ? ((var_1_5 - var_1_3)) : (var_1_4))))) : (var_1_7 == ((signed long int) (var_1_5 + (var_1_1 + var_1_4)))))) && (((var_1_9 - ((((5) > (var_1_10)) ? (5) : (var_1_10)))) >= var_1_3) ? (var_1_8 == ((double) var_1_11)) : 1) ; [L87] RET, EXPR property() [L87] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=5, var_1_11=83/10, var_1_1=47134, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=79901, var_1_8=83/10, var_1_9=127] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=5, var_1_11=83/10, var_1_1=47134, var_1_2=1, var_1_3=4, var_1_4=32767, var_1_5=0, var_1_6=25, var_1_7=79901, var_1_8=83/10, var_1_9=127] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 13, 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=29occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 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 [2023-11-23 21:30:12,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/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_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire --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 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:14,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:14,752 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:30:14,758 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:14,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:14,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:14,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:14,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:14,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:14,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:14,790 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:14,791 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:14,791 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:14,792 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:14,792 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:14,793 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:14,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:14,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:14,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:30:14,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:30:14,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:14,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:14,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:14,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:14,798 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:30:14,798 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:30:14,799 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:30:14,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:30:14,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:14,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:14,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:14,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:30:14,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:14,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:14,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:14,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:14,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:14,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:14,802 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:30:14,803 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:30:14,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:14,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:14,803 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:14,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:14,804 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_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ccbd3d527b155627328a35d6caa52dc0505af33db01f6600e6e4ac6df0debf6 [2023-11-23 21:30:15,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:15,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:15,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:15,231 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:15,231 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:15,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-23 21:30:18,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:18,937 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:18,937 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-23 21:30:18,946 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data/49745decb/f494ca3a206b4a4f8e0b3c1a6ba93ef1/FLAG6639fc057 [2023-11-23 21:30:18,962 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/data/49745decb/f494ca3a206b4a4f8e0b3c1a6ba93ef1 [2023-11-23 21:30:18,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:18,967 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:18,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:18,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:18,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:18,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:18" (1/1) ... [2023-11-23 21:30:18,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ff59ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:18, skipping insertion in model container [2023-11-23 21:30:18,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:18" (1/1) ... [2023-11-23 21:30:19,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:19,256 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_de3c7228-4938-491a-babf-57f50144aa40/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-23 21:30:19,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:19,357 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:19,380 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_de3c7228-4938-491a-babf-57f50144aa40/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-70.i[915,928] [2023-11-23 21:30:19,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:19,440 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:19,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19 WrapperNode [2023-11-23 21:30:19,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:19,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:19,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:19,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:19,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,481 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,537 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-11-23 21:30:19,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:19,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:19,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:19,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:19,551 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:19,617 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:19,617 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:19,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:19,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (1/1) ... [2023-11-23 21:30:19,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:19,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:19,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:30:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:30:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:30:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:19,788 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:19,791 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:20,144 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:20,229 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:20,230 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:30:20,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:20 BoogieIcfgContainer [2023-11-23 21:30:20,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:20,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:20,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:20,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:20,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:18" (1/3) ... [2023-11-23 21:30:20,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6f4236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:20, skipping insertion in model container [2023-11-23 21:30:20,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:19" (2/3) ... [2023-11-23 21:30:20,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6f4236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:20, skipping insertion in model container [2023-11-23 21:30:20,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:20" (3/3) ... [2023-11-23 21:30:20,240 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-70.i [2023-11-23 21:30:20,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:20,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:30:20,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:20,339 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;@4f7b79bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:20,340 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:30:20,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:30:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:30:20,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:20,360 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:20,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:20,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:20,367 INFO L85 PathProgramCache]: Analyzing trace with hash -652337531, now seen corresponding path program 1 times [2023-11-23 21:30:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:20,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694392646] [2023-11-23 21:30:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:20,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:20,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:20,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:30:20,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:30:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:20,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:30:20,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:20,674 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 21:30:20,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:20,677 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694392646] [2023-11-23 21:30:20,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694392646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:20,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:30:20,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290688914] [2023-11-23 21:30:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:20,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:30:20,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:30:20,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:30:20,729 INFO L87 Difference]: Start difference. First operand has 38 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 23 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:30:20,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:20,789 INFO L93 Difference]: Finished difference Result 73 states and 125 transitions. [2023-11-23 21:30:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:30:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-11-23 21:30:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:20,802 INFO L225 Difference]: With dead ends: 73 [2023-11-23 21:30:20,802 INFO L226 Difference]: Without dead ends: 36 [2023-11-23 21:30:20,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:30:20,810 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:20,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:30:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-23 21:30:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-23 21:30:20,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 21:30:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2023-11-23 21:30:20,867 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 52 transitions. Word has length 82 [2023-11-23 21:30:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:20,867 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 52 transitions. [2023-11-23 21:30:20,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 21:30:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 52 transitions. [2023-11-23 21:30:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:30:20,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:20,872 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:20,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 21:30:21,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:21,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:21,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:21,077 INFO L85 PathProgramCache]: Analyzing trace with hash -536723133, now seen corresponding path program 1 times [2023-11-23 21:30:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:21,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503911474] [2023-11-23 21:30:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:21,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:21,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:21,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:30:21,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:30:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:21,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 21:30:21,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 187 proven. 69 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 21:30:22,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:30:23,189 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-23 21:30:23,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:30:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503911474] [2023-11-23 21:30:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503911474] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:23,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2023-11-23 21:30:23,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221285548] [2023-11-23 21:30:23,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:30:23,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:30:23,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:30:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:30:23,204 INFO L87 Difference]: Start difference. First operand 36 states and 52 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 21:30:23,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:23,666 INFO L93 Difference]: Finished difference Result 103 states and 142 transitions. [2023-11-23 21:30:23,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:30:23,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-11-23 21:30:23,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:23,675 INFO L225 Difference]: With dead ends: 103 [2023-11-23 21:30:23,676 INFO L226 Difference]: Without dead ends: 68 [2023-11-23 21:30:23,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:30:23,678 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:23,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 113 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:30:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-23 21:30:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2023-11-23 21:30:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 35 states have internal predecessors, (44), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:30:23,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2023-11-23 21:30:23,719 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 82 [2023-11-23 21:30:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:23,721 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2023-11-23 21:30:23,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 21:30:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2023-11-23 21:30:23,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:30:23,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:23,734 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:23,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:23,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:23,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:23,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -536663551, now seen corresponding path program 1 times [2023-11-23 21:30:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:30:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135169541] [2023-11-23 21:30:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:23,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:30:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:30:23,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:30:23,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de3c7228-4938-491a-babf-57f50144aa40/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:30:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:24,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 21:30:24,243 INFO L285 TraceCheckSpWp]: Computing forward predicates...