./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 62c16d91e787288ae99ac41232bb0baaa3c2e24a529da812094625072884fa10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:49,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:49,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:34:49,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:49,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:49,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:49,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:49,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:49,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:49,717 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:49,717 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:49,718 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:49,719 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:49,719 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:34:49,720 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:49,721 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:49,721 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:34:49,722 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:34:49,724 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:49,725 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:34:49,726 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:34:49,726 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:34:49,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:49,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:49,728 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:34:49,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:34:49,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:34:49,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:49,730 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:49,730 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:49,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:49,732 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:34:49,732 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:49,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:49,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:49,733 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:49,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:49,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:49,734 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:49,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:49,735 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:49,735 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:34:49,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:34:49,736 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:49,736 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:49,737 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:49,737 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:49,737 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62c16d91e787288ae99ac41232bb0baaa3c2e24a529da812094625072884fa10 [2023-11-23 20:34:50,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:50,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:50,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:50,122 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:50,123 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:50,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i [2023-11-23 20:34:53,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:34:53,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:34:53,672 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i [2023-11-23 20:34:53,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data/def8d121d/68b511fd88a74c9a918c58162cf3f183/FLAG8b990cd0e [2023-11-23 20:34:53,700 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data/def8d121d/68b511fd88a74c9a918c58162cf3f183 [2023-11-23 20:34:53,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:34:53,711 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:34:53,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:53,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:34:53,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:34:53,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:53" (1/1) ... [2023-11-23 20:34:53,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6f1d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:53, skipping insertion in model container [2023-11-23 20:34:53,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:34:53" (1/1) ... [2023-11-23 20:34:53,761 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:34:53,955 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i[915,928] [2023-11-23 20:34:54,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:54,012 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:34:54,030 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i[915,928] [2023-11-23 20:34:54,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:34:54,086 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:34:54,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54 WrapperNode [2023-11-23 20:34:54,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:34:54,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:54,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:34:54,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:34:54,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,156 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-11-23 20:34:54,168 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:34:54,169 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:34:54,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:34:54,169 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:34:54,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,183 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:34:54,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:34:54,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:34:54,210 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:34:54,211 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (1/1) ... [2023-11-23 20:34:54,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:54,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:54,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:34:54,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:34:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:34:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:34:54,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:34:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:34:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:34:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:34:54,371 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:34:54,373 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:34:54,623 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:34:54,753 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:34:54,758 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:34:54,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:54 BoogieIcfgContainer [2023-11-23 20:34:54,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:34:54,763 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:34:54,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:34:54,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:34:54,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:34:53" (1/3) ... [2023-11-23 20:34:54,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4ec7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:54, skipping insertion in model container [2023-11-23 20:34:54,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:34:54" (2/3) ... [2023-11-23 20:34:54,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c4ec7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:34:54, skipping insertion in model container [2023-11-23 20:34:54,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:54" (3/3) ... [2023-11-23 20:34:54,774 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-46.i [2023-11-23 20:34:54,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:34:54,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:34:54,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:34:54,870 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;@4a78c9dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:34:54,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:34:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:34:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 20:34:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:34:54,887 INFO L195 NwaCegarLoop]: trace histogram [10, 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 20:34:54,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:34:54,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:34:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1468714131, now seen corresponding path program 1 times [2023-11-23 20:34:54,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:34:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622762204] [2023-11-23 20:34:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:34:55,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 20:34:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107349522] [2023-11-23 20:34:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:34:55,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:34:55,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:34:55,112 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:34:55,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:34:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:34:55,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:34:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:34:55,332 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:34:55,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:34:55,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:34:55,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:34:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 20:34:55,564 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 20:34:55,568 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:34:55,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:34:55 BoogieIcfgContainer [2023-11-23 20:34:55,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:34:55,616 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:34:55,616 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:34:55,616 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:34:55,617 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:34:54" (3/4) ... [2023-11-23 20:34:55,619 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 20:34:55,620 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:34:55,621 INFO L158 Benchmark]: Toolchain (without parser) took 1909.71ms. Allocated memory is still 165.7MB. Free memory was 131.2MB in the beginning and 64.1MB in the end (delta: 67.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-11-23 20:34:55,621 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 66.2MB in the beginning and 66.0MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:34:55,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.56ms. Allocated memory is still 165.7MB. Free memory was 130.5MB in the beginning and 118.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 20:34:55,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.09ms. Allocated memory is still 165.7MB. Free memory was 118.7MB in the beginning and 115.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 20:34:55,623 INFO L158 Benchmark]: Boogie Preprocessor took 39.49ms. Allocated memory is still 165.7MB. Free memory was 115.8MB in the beginning and 114.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:34:55,624 INFO L158 Benchmark]: RCFGBuilder took 550.86ms. Allocated memory is still 165.7MB. Free memory was 114.5MB in the beginning and 90.7MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 20:34:55,625 INFO L158 Benchmark]: TraceAbstraction took 851.85ms. Allocated memory is still 165.7MB. Free memory was 90.0MB in the beginning and 64.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 20:34:55,625 INFO L158 Benchmark]: Witness Printer took 4.49ms. Allocated memory is still 165.7MB. Free memory was 64.8MB in the beginning and 64.1MB in the end (delta: 688.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:34:55,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 66.2MB in the beginning and 66.0MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.56ms. Allocated memory is still 165.7MB. Free memory was 130.5MB in the beginning and 118.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.09ms. Allocated memory is still 165.7MB. Free memory was 118.7MB in the beginning and 115.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.49ms. Allocated memory is still 165.7MB. Free memory was 115.8MB in the beginning and 114.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 550.86ms. Allocated memory is still 165.7MB. Free memory was 114.5MB in the beginning and 90.7MB in the end (delta: 23.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 851.85ms. Allocated memory is still 165.7MB. Free memory was 90.0MB in the beginning and 64.8MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.49ms. Allocated memory is still 165.7MB. Free memory was 64.8MB in the beginning and 64.1MB in the end (delta: 688.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 47. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] double var_1_2 = 31.75; [L24] signed char var_1_4 = -8; [L25] unsigned char var_1_6 = 0; [L26] unsigned char var_1_7 = 1; [L27] unsigned char var_1_8 = 16; [L28] unsigned char var_1_9 = 8; [L29] signed long int var_1_10 = 256; [L30] signed long int last_1_var_1_10 = 256; [L92] isInitial = 1 [L93] FCALL initially() [L94] int k_loop; [L95] k_loop = 0 VAL [isInitial=1, k_loop=0, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_2=127/4, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L95] COND TRUE k_loop < 1 [L96] CALL updateLastVariables() [L85] last_1_var_1_10 = var_1_10 [L96] RET updateLastVariables() [L97] CALL updateVariables() [L68] var_1_2 = __VERIFIER_nondet_double() [L69] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-8, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L70] var_1_4 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_4 >= -128) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_4 >= -128) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L72] CALL assume_abort_if_not(var_1_4 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_4 <= 127) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L73] CALL assume_abort_if_not(var_1_4 != 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_4 != 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L74] var_1_6 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_7=1, var_1_8=16, var_1_9=8] [L76] CALL assume_abort_if_not(var_1_6 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_6 <= 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L77] var_1_7 = __VERIFIER_nondet_uchar() [L78] CALL assume_abort_if_not(var_1_7 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_7 >= 1) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L79] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=8] [L80] var_1_9 = __VERIFIER_nondet_uchar() [L81] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16] [L82] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=3] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=16, var_1_9=3] [L97] RET updateVariables() [L98] CALL step() [L34] signed char stepLocal_3 = var_1_4; [L35] unsigned char stepLocal_2 = var_1_7; [L36] COND TRUE 2 != stepLocal_3 [L37] var_1_8 = var_1_9 [L45] signed long int stepLocal_1 = var_1_8 / var_1_4; [L46] signed long int stepLocal_0 = (((var_1_4) < (var_1_8)) ? (var_1_4) : (var_1_8)); [L47] COND TRUE (- var_1_2) >= 16.75 [L48] COND FALSE !(stepLocal_1 >= var_1_8) [L55] var_1_1 = var_1_7 [L60] signed long int stepLocal_4 = var_1_8 * var_1_8; [L61] COND FALSE !(0 > stepLocal_4) [L98] RET step() [L99] CALL, EXPR property() [L88-L89] return ((((- var_1_2) >= 16.75) ? (((var_1_8 / var_1_4) >= var_1_8) ? ((((((var_1_4) < (var_1_8)) ? (var_1_4) : (var_1_8))) > -32) ? (var_1_1 == ((unsigned char) 0)) : (var_1_1 == ((unsigned char) var_1_6))) : (var_1_1 == ((unsigned char) var_1_7))) : (var_1_1 == ((unsigned char) var_1_6))) && ((2 != var_1_4) ? (var_1_8 == ((unsigned char) var_1_9)) : (((var_1_9 <= last_1_var_1_10) && var_1_7) ? (var_1_8 == ((unsigned char) 128)) : (var_1_8 == ((unsigned char) var_1_9))))) && ((0 > (var_1_8 * var_1_8)) ? (var_1_1 ? (var_1_10 == ((signed long int) 5)) : 1) : 1) ; [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_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=3, var_1_9=3] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_10=256, var_1_10=256, var_1_1=1, var_1_4=-4, var_1_6=0, var_1_7=1, var_1_8=3, var_1_9=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 10, 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=24occurred 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, 39 NumberOfCodeBlocks, 39 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 20:34:55,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 62c16d91e787288ae99ac41232bb0baaa3c2e24a529da812094625072884fa10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:34:58,407 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:34:58,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 20:34:58,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:34:58,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:34:58,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:34:58,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:34:58,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:34:58,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:34:58,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:34:58,601 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:34:58,602 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:34:58,602 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:34:58,604 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:34:58,605 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:34:58,605 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:34:58,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:34:58,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:34:58,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:34:58,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:34:58,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:34:58,610 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:34:58,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:34:58,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:34:58,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 20:34:58,612 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 20:34:58,612 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 20:34:58,613 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:34:58,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:34:58,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:34:58,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:34:58,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 20:34:58,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:34:58,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:34:58,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:34:58,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:34:58,618 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:34:58,618 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:34:58,618 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 20:34:58,619 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 20:34:58,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:34:58,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:34:58,621 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:34:58,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:34:58,622 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62c16d91e787288ae99ac41232bb0baaa3c2e24a529da812094625072884fa10 [2023-11-23 20:34:59,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:34:59,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:34:59,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:34:59,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:34:59,087 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:34:59,089 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i [2023-11-23 20:35:02,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:02,684 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:02,685 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i [2023-11-23 20:35:02,699 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data/8d06e04fe/5bba9855750b4e4e86a3c83c713b050b/FLAG8e754235e [2023-11-23 20:35:02,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/data/8d06e04fe/5bba9855750b4e4e86a3c83c713b050b [2023-11-23 20:35:02,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:02,726 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:02,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:02,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:02,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:02,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:02" (1/1) ... [2023-11-23 20:35:02,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cca2b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:02, skipping insertion in model container [2023-11-23 20:35:02,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:02" (1/1) ... [2023-11-23 20:35:02,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:02,984 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i[915,928] [2023-11-23 20:35:03,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:03,047 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:03,061 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_54c7d944-93e9-425c-b3e3-e88133de2b7c/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-46.i[915,928] [2023-11-23 20:35:03,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:03,135 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:03,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03 WrapperNode [2023-11-23 20:35:03,136 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:03,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:03,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:03,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:03,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,219 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 94 [2023-11-23 20:35:03,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:03,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:03,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:03,221 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:03,235 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,288 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:03,289 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:03,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:03,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:03,291 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (1/1) ... [2023-11-23 20:35:03,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:03,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:03,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:03,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 20:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 20:35:03,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 20:35:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:03,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:03,509 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:03,515 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:03,993 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:04,047 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:04,048 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 20:35:04,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:04 BoogieIcfgContainer [2023-11-23 20:35:04,049 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:04,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:04,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:04,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:04,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:02" (1/3) ... [2023-11-23 20:35:04,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfdb60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:04, skipping insertion in model container [2023-11-23 20:35:04,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:03" (2/3) ... [2023-11-23 20:35:04,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfdb60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:04, skipping insertion in model container [2023-11-23 20:35:04,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:04" (3/3) ... [2023-11-23 20:35:04,061 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-46.i [2023-11-23 20:35:04,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:04,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:35:04,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:04,153 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;@60a92021, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:04,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:35:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:35:04,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:35:04,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:04,177 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 20:35:04,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:04,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash 520487544, now seen corresponding path program 1 times [2023-11-23 20:35:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:35:04,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384626496] [2023-11-23 20:35:04,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:04,216 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 20:35:04,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:35:04,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 20:35:04,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 20:35:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:04,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 20:35:04,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 20:35:04,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 20:35:04,486 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 20:35:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384626496] [2023-11-23 20:35:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384626496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:04,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:04,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938674599] [2023-11-23 20:35:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:04,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:35:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 20:35:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:35:04,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:35:04,551 INFO L87 Difference]: Start difference. First operand has 37 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 20:35:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:04,660 INFO L93 Difference]: Finished difference Result 73 states and 121 transitions. [2023-11-23 20:35:04,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:35:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2023-11-23 20:35:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:04,673 INFO L225 Difference]: With dead ends: 73 [2023-11-23 20:35:04,673 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 20:35:04,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 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 20:35:04,682 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:04,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 20:35:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-23 20:35:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 20:35:04,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2023-11-23 20:35:04,735 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 65 [2023-11-23 20:35:04,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:04,736 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2023-11-23 20:35:04,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 20:35:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2023-11-23 20:35:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:35:04,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:04,741 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 20:35:04,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 20:35:04,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:04,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:04,950 INFO L85 PathProgramCache]: Analyzing trace with hash 841776636, now seen corresponding path program 1 times [2023-11-23 20:35:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 20:35:04,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239712349] [2023-11-23 20:35:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:04,953 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 20:35:04,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 20:35:04,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 20:35:04,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54c7d944-93e9-425c-b3e3-e88133de2b7c/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 20:35:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:05,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 20:35:05,191 INFO L285 TraceCheckSpWp]: Computing forward predicates...