./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 4d07f6d4eb00f77dbf0a6f761a1dfb43bb3a584f994c1eafe03cf0135e1262b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:16,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:16,858 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:31:16,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:16,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:16,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:16,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:16,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:16,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:16,912 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:16,913 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:16,914 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:16,914 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:16,915 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:31:16,915 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:16,916 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:16,916 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:31:16,917 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:31:16,917 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:16,918 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:31:16,918 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:31:16,919 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:31:16,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:16,920 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:16,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:16,921 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:16,921 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:16,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:16,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:16,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:16,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:16,923 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:16,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:16,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:16,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:16,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:16,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:16,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:16,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:16,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:16,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:16,926 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:31:16,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:31:16,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:16,927 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:16,927 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:16,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:16,928 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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d07f6d4eb00f77dbf0a6f761a1dfb43bb3a584f994c1eafe03cf0135e1262b3 [2023-11-23 21:31:17,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:17,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:17,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:17,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:17,238 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:17,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i [2023-11-23 21:31:20,469 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:20,720 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:20,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i [2023-11-23 21:31:20,736 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data/6f1c8d259/ec026f340be246dba203074d578c8bf3/FLAGbab6972f7 [2023-11-23 21:31:20,755 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data/6f1c8d259/ec026f340be246dba203074d578c8bf3 [2023-11-23 21:31:20,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:20,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:20,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:20,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:20,773 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:20,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:20" (1/1) ... [2023-11-23 21:31:20,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d338cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:20, skipping insertion in model container [2023-11-23 21:31:20,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:20" (1/1) ... [2023-11-23 21:31:20,819 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:21,021 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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i[915,928] [2023-11-23 21:31:21,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:21,074 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:21,086 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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i[915,928] [2023-11-23 21:31:21,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:21,127 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:21,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21 WrapperNode [2023-11-23 21:31:21,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:21,129 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:21,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:21,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:21,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,184 INFO L138 Inliner]: procedures = 26, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2023-11-23 21:31:21,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:21,185 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:21,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:21,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:21,203 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,220 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:21,226 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:21,227 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:21,227 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:21,228 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (1/1) ... [2023-11-23 21:31:21,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:21,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:21,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:21,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:21,318 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:21,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:31:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:21,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:21,396 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:21,398 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:21,807 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:22,001 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:22,001 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:22,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:22 BoogieIcfgContainer [2023-11-23 21:31:22,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:22,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:22,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:22,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:22,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:20" (1/3) ... [2023-11-23 21:31:22,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6f3af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:22, skipping insertion in model container [2023-11-23 21:31:22,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:21" (2/3) ... [2023-11-23 21:31:22,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6f3af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:22, skipping insertion in model container [2023-11-23 21:31:22,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:22" (3/3) ... [2023-11-23 21:31:22,018 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-33.i [2023-11-23 21:31:22,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:22,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:22,086 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:22,094 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;@4310e8b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:22,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:31:22,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 21:31:22,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:22,109 INFO L195 NwaCegarLoop]: trace histogram [8, 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 21:31:22,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:22,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:22,115 INFO L85 PathProgramCache]: Analyzing trace with hash 43549989, now seen corresponding path program 1 times [2023-11-23 21:31:22,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:22,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098324745] [2023-11-23 21:31:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:22,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:22,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:31:22,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211419988] [2023-11-23 21:31:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:22,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:22,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:22,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:22,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:31:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:22,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 21:31:22,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 21:31:24,389 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 21:31:27,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098324745] [2023-11-23 21:31:27,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:31:27,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211419988] [2023-11-23 21:31:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211419988] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 21:31:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:31:27,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-23 21:31:27,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511183625] [2023-11-23 21:31:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:27,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:31:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:31:27,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:31:27,086 INFO L87 Difference]: Start difference. First operand has 22 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:31:27,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:27,286 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2023-11-23 21:31:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:31:27,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 33 [2023-11-23 21:31:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:27,296 INFO L225 Difference]: With dead ends: 61 [2023-11-23 21:31:27,297 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 21:31:27,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-23 21:31:27,303 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:27,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 114 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:31:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 21:31:27,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-11-23 21:31:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:31:27,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2023-11-23 21:31:27,357 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 33 [2023-11-23 21:31:27,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:27,358 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2023-11-23 21:31:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:31:27,359 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2023-11-23 21:31:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:31:27,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:27,363 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 21:31:27,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:31:27,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:27,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:27,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1683402189, now seen corresponding path program 1 times [2023-11-23 21:31:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:27,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934697057] [2023-11-23 21:31:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:27,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:27,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:31:27,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [861789173] [2023-11-23 21:31:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:27,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:27,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:27,634 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:27,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:31:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:31:28,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:31:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:31:28,452 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:31:28,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:31:28,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:31:28,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 21:31:28,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:31:28,671 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:31:28,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:31:28 BoogieIcfgContainer [2023-11-23 21:31:28,745 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:31:28,746 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:31:28,746 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:31:28,746 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:31:28,747 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:22" (3/4) ... [2023-11-23 21:31:28,749 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:31:28,750 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:31:28,751 INFO L158 Benchmark]: Toolchain (without parser) took 7985.76ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 110.3MB in the beginning and 130.3MB in the end (delta: -20.0MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,752 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 155.2MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:31:28,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.47ms. Allocated memory is still 155.2MB. Free memory was 110.3MB in the beginning and 98.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.10ms. Allocated memory is still 155.2MB. Free memory was 98.4MB in the beginning and 95.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,754 INFO L158 Benchmark]: Boogie Preprocessor took 40.43ms. Allocated memory is still 155.2MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,754 INFO L158 Benchmark]: RCFGBuilder took 776.46ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 67.7MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,755 INFO L158 Benchmark]: TraceAbstraction took 6736.01ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 67.0MB in the beginning and 131.4MB in the end (delta: -64.4MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,756 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 270.5MB. Free memory was 131.4MB in the beginning and 130.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:31:28,759 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 155.2MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.47ms. Allocated memory is still 155.2MB. Free memory was 110.3MB in the beginning and 98.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.10ms. Allocated memory is still 155.2MB. Free memory was 98.4MB in the beginning and 95.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.43ms. Allocated memory is still 155.2MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 776.46ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 67.7MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6736.01ms. Allocated memory was 155.2MB in the beginning and 270.5MB in the end (delta: 115.3MB). Free memory was 67.0MB in the beginning and 131.4MB in the end (delta: -64.4MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 270.5MB. Free memory was 131.4MB in the beginning and 130.3MB 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 someBinaryFLOATComparisonOperation at line 83, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticFLOAToperation at line 51. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = -10; [L23] unsigned char var_1_7 = 200; [L24] unsigned char var_1_8 = 4; [L25] signed char var_1_9 = 50; [L26] signed char var_1_12 = -5; [L27] float var_1_13 = 999999999999.8; [L28] float var_1_14 = 100.5; [L29] float var_1_15 = 32.75; [L30] unsigned char var_1_16 = 1; [L31] unsigned char var_1_17 = 1; [L32] unsigned char var_1_18 = 128; [L33] unsigned char last_1_var_1_7 = 200; [L34] signed char last_1_var_1_9 = 50; [L87] isInitial = 1 [L88] FCALL initially() [L89] COND TRUE 1 [L90] CALL updateLastVariables() [L79] last_1_var_1_7 = var_1_7 [L80] last_1_var_1_9 = var_1_9 [L90] RET updateLastVariables() [L91] CALL updateVariables() [L64] var_1_8 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_9=50] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_9=50] [L66] CALL assume_abort_if_not(var_1_8 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_8 <= 254) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-5, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L67] var_1_12 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_12 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_12 >= -127) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L69] CALL assume_abort_if_not(var_1_12 <= 126) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_12 <= 126) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_14=201/2, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L70] var_1_14 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_15=131/4, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L72] var_1_15 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L74] var_1_17 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L76] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=128, var_1_1=-10, var_1_7=200, var_1_8=64, var_1_9=50] [L91] RET updateVariables() [L92] CALL step() [L38] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L38] signed long int stepLocal_0 = (last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9; [L39] COND FALSE !(stepLocal_0 < -1) [L42] var_1_1 = (128 - (last_1_var_1_7 + last_1_var_1_7)) [L44] var_1_16 = var_1_17 [L45] var_1_18 = var_1_8 [L46] COND TRUE var_1_18 == var_1_18 [L47] var_1_7 = var_1_8 [L49] signed short int stepLocal_3 = var_1_1; [L50] COND FALSE !(var_1_18 == stepLocal_3) [L53] signed short int stepLocal_2 = var_1_1; [L54] unsigned char stepLocal_1 = (var_1_1 * var_1_18) < -10000; [L55] COND TRUE \read(var_1_16) [L56] COND TRUE stepLocal_1 && var_1_16 [L57] COND FALSE !(stepLocal_2 > var_1_1) [L92] RET step() [L93] CALL, EXPR property() [L83] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L83-L84] return ((((((((last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (last_1_var_1_7 + last_1_var_1_7))))) && ((var_1_18 == var_1_18) ? (var_1_7 == ((unsigned char) var_1_8)) : 1)) && (var_1_16 ? ((((var_1_1 * var_1_18) < -10000) && var_1_16) ? ((var_1_1 > var_1_1) ? (var_1_9 == ((signed char) var_1_12)) : 1) : 1) : 1)) && ((var_1_18 == var_1_1) ? (var_1_13 == ((float) (var_1_14 - var_1_15))) : 1)) && (var_1_16 == ((unsigned char) var_1_17))) && (var_1_18 == ((unsigned char) var_1_8)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, isInitial=1, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=64, var_1_9=50] [L93] RET __VERIFIER_assert(property()) [L94] isInitial = 0 VAL [isInitial=0, last_1_var_1_7=200, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=64, var_1_9=50] [L89] COND TRUE 1 [L90] CALL updateLastVariables() [L79] last_1_var_1_7 = var_1_7 [L80] last_1_var_1_9 = var_1_9 [L90] RET updateLastVariables() [L91] CALL updateVariables() [L64] var_1_8 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_8 >= 0) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_9=50] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_8 >= 0) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_9=50] [L66] CALL assume_abort_if_not(var_1_8 <= 254) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_8 <= 254) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L67] var_1_12 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_12 >= -127) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_12 >= -127) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L69] CALL assume_abort_if_not(var_1_12 <= 126) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_12 <= 126) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L70] var_1_14 = __VERIFIER_nondet_float() [L71] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L72] var_1_15 = __VERIFIER_nondet_float() [L73] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854765600e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L74] var_1_17 = __VERIFIER_nondet_uchar() [L75] CALL assume_abort_if_not(var_1_17 >= 1) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_17 >= 1) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L76] CALL assume_abort_if_not(var_1_17 <= 1) VAL [\old(cond)=1, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(var_1_17 <= 1) VAL [isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=4999999999999/5, var_1_16=1, var_1_17=1, var_1_18=64, var_1_1=-272, var_1_7=64, var_1_8=0, var_1_9=50] [L91] RET updateVariables() [L92] CALL step() [L38] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L38] signed long int stepLocal_0 = (last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9; [L39] COND FALSE !(stepLocal_0 < -1) [L42] var_1_1 = (128 - (last_1_var_1_7 + last_1_var_1_7)) [L44] var_1_16 = var_1_17 [L45] var_1_18 = var_1_8 [L46] COND TRUE var_1_18 == var_1_18 [L47] var_1_7 = var_1_8 [L49] signed short int stepLocal_3 = var_1_1; [L50] COND TRUE var_1_18 == stepLocal_3 [L51] var_1_13 = (var_1_14 - var_1_15) [L53] signed short int stepLocal_2 = var_1_1; [L54] unsigned char stepLocal_1 = (var_1_1 * var_1_18) < -10000; [L55] COND TRUE \read(var_1_16) [L56] COND FALSE !(stepLocal_1 && var_1_16) [L92] RET step() [L93] CALL, EXPR property() [L83] EXPR last_1_var_1_9 ^ last_1_var_1_9 [L83-L84] return ((((((((last_1_var_1_9 ^ last_1_var_1_9) + last_1_var_1_9) < -1) ? (var_1_1 == ((signed short int) 8)) : (var_1_1 == ((signed short int) (128 - (last_1_var_1_7 + last_1_var_1_7))))) && ((var_1_18 == var_1_18) ? (var_1_7 == ((unsigned char) var_1_8)) : 1)) && (var_1_16 ? ((((var_1_1 * var_1_18) < -10000) && var_1_16) ? ((var_1_1 > var_1_1) ? (var_1_9 == ((signed char) var_1_12)) : 1) : 1) : 1)) && ((var_1_18 == var_1_1) ? (var_1_13 == ((float) (var_1_14 - var_1_15))) : 1)) && (var_1_16 == ((unsigned char) var_1_17))) && (var_1_18 == ((unsigned char) var_1_8)) ; [L93] RET, EXPR property() [L93] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=0, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=0, var_1_7=0, var_1_8=0, var_1_9=50] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=0, last_1_var_1_7=64, last_1_var_1_9=50, var_1_12=-127, var_1_13=0, var_1_16=1, var_1_17=1, var_1_18=0, var_1_1=0, var_1_7=0, var_1_8=0, var_1_9=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 2, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 23 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=1, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 794 SizeOfPredicates, 16 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 100/112 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 21:31:28,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 4d07f6d4eb00f77dbf0a6f761a1dfb43bb3a584f994c1eafe03cf0135e1262b3 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:31,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:31,742 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:31:31,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:31,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:31,802 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:31,803 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:31,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:31,805 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:31,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:31,811 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:31,811 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:31,812 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:31,814 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:31,814 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:31,815 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:31,816 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:31,816 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:31,817 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:31,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:31,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:31,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:31,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:31,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:31,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:31:31,821 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:31:31,822 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:31:31,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:31,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:31,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:31,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:31,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:31:31,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:31,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:31,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:31,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:31,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:31,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:31,828 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:31:31,829 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:31:31,829 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:31,830 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:31,830 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:31,830 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:31,831 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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d07f6d4eb00f77dbf0a6f761a1dfb43bb3a584f994c1eafe03cf0135e1262b3 [2023-11-23 21:31:32,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:32,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:32,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:32,293 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:32,293 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:32,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i [2023-11-23 21:31:35,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:35,822 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:35,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i [2023-11-23 21:31:35,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data/6b100b1d0/f51ee5bce19e4db3a9d0272d34f0e093/FLAG2f69092cd [2023-11-23 21:31:35,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/data/6b100b1d0/f51ee5bce19e4db3a9d0272d34f0e093 [2023-11-23 21:31:35,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:35,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:35,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:35,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:35,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:35,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:35" (1/1) ... [2023-11-23 21:31:35,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1772b316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:35, skipping insertion in model container [2023-11-23 21:31:35,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:35" (1/1) ... [2023-11-23 21:31:35,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:36,042 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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i[915,928] [2023-11-23 21:31:36,081 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:36,098 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:36,111 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_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-33.i[915,928] [2023-11-23 21:31:36,132 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:36,152 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:36,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36 WrapperNode [2023-11-23 21:31:36,153 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:36,154 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:36,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:36,155 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:36,162 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,213 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2023-11-23 21:31:36,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:36,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:36,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:36,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:36,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,250 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,272 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,276 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,292 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:36,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:36,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:36,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:36,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (1/1) ... [2023-11-23 21:31:36,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:36,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:36,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:36,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:31:36,394 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:31:36,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:31:36,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:36,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:36,496 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:36,499 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:36,917 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:36,997 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:37,002 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:37,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:37 BoogieIcfgContainer [2023-11-23 21:31:37,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:37,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:37,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:37,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:37,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:35" (1/3) ... [2023-11-23 21:31:37,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d98fa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:37, skipping insertion in model container [2023-11-23 21:31:37,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:36" (2/3) ... [2023-11-23 21:31:37,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d98fa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:37, skipping insertion in model container [2023-11-23 21:31:37,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:37" (3/3) ... [2023-11-23 21:31:37,016 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-33.i [2023-11-23 21:31:37,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:37,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:31:37,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:37,125 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;@409cdf7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:37,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:31:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:31:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 21:31:37,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:37,146 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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 21:31:37,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:37,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash -349548776, now seen corresponding path program 1 times [2023-11-23 21:31:37,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:37,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63797822] [2023-11-23 21:31:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:37,174 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 21:31:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:37,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:37,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:37,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:31:37,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:37,555 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 21:31:37,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:37,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63797822] [2023-11-23 21:31:37,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63797822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:37,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:37,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:31:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833021355] [2023-11-23 21:31:37,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:37,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:31:37,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:37,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:31:37,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:31:37,616 INFO L87 Difference]: Start difference. First operand has 35 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:31:37,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:37,856 INFO L93 Difference]: Finished difference Result 67 states and 108 transitions. [2023-11-23 21:31:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:31:37,863 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-23 21:31:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:37,871 INFO L225 Difference]: With dead ends: 67 [2023-11-23 21:31:37,871 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 21:31:37,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 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 21:31:37,880 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:37,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:31:37,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 21:31:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-23 21:31:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 21:31:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2023-11-23 21:31:37,942 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 57 [2023-11-23 21:31:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:37,943 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2023-11-23 21:31:37,944 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:31:37,944 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2023-11-23 21:31:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 21:31:37,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:37,949 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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 21:31:37,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:38,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:38,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:38,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1083279452, now seen corresponding path program 1 times [2023-11-23 21:31:38,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:38,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235542966] [2023-11-23 21:31:38,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:38,158 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 21:31:38,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:38,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:38,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:38,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:31:38,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 21:31:38,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:38,630 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235542966] [2023-11-23 21:31:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235542966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:31:38,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038645487] [2023-11-23 21:31:38,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:31:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:38,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:31:38,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:31:38,646 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:31:39,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:39,130 INFO L93 Difference]: Finished difference Result 103 states and 139 transitions. [2023-11-23 21:31:39,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:31:39,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 57 [2023-11-23 21:31:39,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:39,137 INFO L225 Difference]: With dead ends: 103 [2023-11-23 21:31:39,137 INFO L226 Difference]: Without dead ends: 71 [2023-11-23 21:31:39,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:31:39,139 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 63 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:39,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 161 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:31:39,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-23 21:31:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2023-11-23 21:31:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:31:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2023-11-23 21:31:39,160 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 57 [2023-11-23 21:31:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:39,160 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2023-11-23 21:31:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:31:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2023-11-23 21:31:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 21:31:39,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:39,162 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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 21:31:39,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:39,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:39,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 690252442, now seen corresponding path program 1 times [2023-11-23 21:31:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225533664] [2023-11-23 21:31:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:39,370 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 21:31:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:39,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:39,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:39,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:31:39,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 21:31:39,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:31:39,679 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:31:39,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225533664] [2023-11-23 21:31:39,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225533664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:39,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:39,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:31:39,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272795366] [2023-11-23 21:31:39,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:39,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:31:39,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:31:39,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:31:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:31:39,682 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:31:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:40,157 INFO L93 Difference]: Finished difference Result 145 states and 189 transitions. [2023-11-23 21:31:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:31:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-23 21:31:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:40,168 INFO L225 Difference]: With dead ends: 145 [2023-11-23 21:31:40,168 INFO L226 Difference]: Without dead ends: 83 [2023-11-23 21:31:40,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:31:40,176 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 65 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:31:40,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 88 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:31:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-23 21:31:40,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2023-11-23 21:31:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:31:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2023-11-23 21:31:40,214 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 57 [2023-11-23 21:31:40,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:40,216 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2023-11-23 21:31:40,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 21:31:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2023-11-23 21:31:40,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 21:31:40,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:40,219 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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 21:31:40,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:40,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:40,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:40,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -91506488, now seen corresponding path program 1 times [2023-11-23 21:31:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:31:40,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323322441] [2023-11-23 21:31:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:40,426 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 21:31:40,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:31:40,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 21:31:40,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a5dd8f0-aa52-4224-bed8-877e0b5f6be7/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 (5)] Waiting until timeout for monitored process [2023-11-23 21:31:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:40,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:31:40,593 INFO L285 TraceCheckSpWp]: Computing forward predicates...