./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0106173d0264f3b7073aa037c767f5a06a37b054d6eaa32bc9517002adc60cc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:06:56,207 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:06:56,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:06:56,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:06:56,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:06:56,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:06:56,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:06:56,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:06:56,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:06:56,324 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:06:56,325 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:06:56,325 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:06:56,326 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:06:56,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:06:56,328 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:06:56,328 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:06:56,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:06:56,330 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:06:56,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:06:56,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:06:56,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:06:56,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:06:56,333 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:06:56,334 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:06:56,334 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:06:56,335 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:06:56,335 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:06:56,336 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:06:56,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:06:56,337 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:06:56,338 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:06:56,338 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:56,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:06:56,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:06:56,340 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:06:56,340 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:06:56,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:06:56,341 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:06:56,341 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:06:56,341 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:06:56,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:06:56,342 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:06:56,342 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0106173d0264f3b7073aa037c767f5a06a37b054d6eaa32bc9517002adc60cc2 [2023-11-21 22:06:56,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:06:56,640 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:06:56,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:06:56,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:06:56,645 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:06:56,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i [2023-11-21 22:06:59,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:07:00,145 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:07:00,146 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i [2023-11-21 22:07:00,155 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data/2e57f16b2/5130c8f7b61e44d995eaca27caefae61/FLAG23a59b9cd [2023-11-21 22:07:00,170 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data/2e57f16b2/5130c8f7b61e44d995eaca27caefae61 [2023-11-21 22:07:00,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:07:00,175 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:07:00,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:00,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:07:00,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:07:00,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12694b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00, skipping insertion in model container [2023-11-21 22:07:00,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,209 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:07:00,362 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i[915,928] [2023-11-21 22:07:00,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:00,412 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:07:00,424 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_6416d34c-b03b-493c-b7cb-428611adf9a2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i[915,928] [2023-11-21 22:07:00,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:00,459 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:07:00,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00 WrapperNode [2023-11-21 22:07:00,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:00,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:00,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:07:00,462 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:07:00,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,508 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2023-11-21 22:07:00,508 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:00,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:07:00,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:07:00,510 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:07:00,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,525 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,536 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:07:00,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:07:00,588 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:07:00,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:07:00,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:07:00,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (1/1) ... [2023-11-21 22:07:00,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:07:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:00,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:07:00,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:07:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:07:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:07:00,671 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:07:00,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:07:00,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:07:00,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:07:00,778 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:07:00,780 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:07:01,019 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:07:01,126 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:07:01,126 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:07:01,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:01 BoogieIcfgContainer [2023-11-21 22:07:01,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:07:01,158 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:07:01,158 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:07:01,161 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:07:01,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:07:00" (1/3) ... [2023-11-21 22:07:01,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a5136e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:07:01, skipping insertion in model container [2023-11-21 22:07:01,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:00" (2/3) ... [2023-11-21 22:07:01,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a5136e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:07:01, skipping insertion in model container [2023-11-21 22:07:01,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:01" (3/3) ... [2023-11-21 22:07:01,165 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-36.i [2023-11-21 22:07:01,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:07:01,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:07:01,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:07:01,247 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=PETRI_NET, 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;@60b256f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:07:01,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:07:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 22:07:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:07:01,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:01,263 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 22:07:01,263 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:01,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash 672890832, now seen corresponding path program 1 times [2023-11-21 22:07:01,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:01,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619301507] [2023-11-21 22:07:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:01,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:01,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:07:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:07:01,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:07:01,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:07:01,727 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:07:01,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:07:01,741 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-21 22:07:01,745 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:07:01,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:07:01 BoogieIcfgContainer [2023-11-21 22:07:01,787 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:07:01,788 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:07:01,788 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:07:01,788 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:07:01,789 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:01" (3/4) ... [2023-11-21 22:07:01,791 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:07:01,792 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:07:01,793 INFO L158 Benchmark]: Toolchain (without parser) took 1618.25ms. Allocated memory is still 157.3MB. Free memory was 120.4MB in the beginning and 104.6MB in the end (delta: 15.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2023-11-21 22:07:01,793 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:07:01,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.65ms. Allocated memory is still 157.3MB. Free memory was 120.0MB in the beginning and 108.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:07:01,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.29ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 106.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:07:01,795 INFO L158 Benchmark]: Boogie Preprocessor took 77.74ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 103.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:07:01,796 INFO L158 Benchmark]: RCFGBuilder took 567.30ms. Allocated memory is still 157.3MB. Free memory was 103.6MB in the beginning and 128.2MB in the end (delta: -24.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-11-21 22:07:01,797 INFO L158 Benchmark]: TraceAbstraction took 629.53ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 104.6MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 22:07:01,797 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 157.3MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:07:01,800 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.65ms. Allocated memory is still 157.3MB. Free memory was 120.0MB in the beginning and 108.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.29ms. Allocated memory is still 157.3MB. Free memory was 108.1MB in the beginning and 106.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.74ms. Allocated memory is still 157.3MB. Free memory was 106.1MB in the beginning and 103.6MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 567.30ms. Allocated memory is still 157.3MB. Free memory was 103.6MB in the beginning and 128.2MB in the end (delta: -24.6MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * TraceAbstraction took 629.53ms. Allocated memory is still 157.3MB. Free memory was 128.2MB in the beginning and 104.6MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 157.3MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 68, overapproximation of someBinaryDOUBLEComparisonOperation at line 38. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned long int var_1_1 = 1; [L23] unsigned char var_1_4 = 0; [L24] float var_1_6 = 2.375; [L25] float var_1_7 = 10.8; [L26] double var_1_9 = 9.6; [L27] double var_1_12 = 128.5; [L28] unsigned char var_1_13 = 128; [L29] float var_1_14 = 8.5; [L30] unsigned char var_1_15 = 128; [L31] unsigned char last_1_var_1_13 = 128; [L81] isInitial = 1 [L82] FCALL initially() [L83] COND TRUE 1 [L84] CALL updateLastVariables() [L74] last_1_var_1_13 = var_1_13 [L84] RET updateLastVariables() [L85] CALL updateVariables() [L57] var_1_4 = __VERIFIER_nondet_uchar() [L58] CALL assume_abort_if_not(var_1_4 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_6=19/8, var_1_7=54/5, var_1_9=48/5] [L20] COND FALSE !(!cond) [L58] RET assume_abort_if_not(var_1_4 >= 0) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_6=19/8, var_1_7=54/5, var_1_9=48/5] [L59] CALL assume_abort_if_not(var_1_4 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=19/8, var_1_7=54/5, var_1_9=48/5] [L20] COND FALSE !(!cond) [L59] RET assume_abort_if_not(var_1_4 <= 1) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=19/8, var_1_7=54/5, var_1_9=48/5] [L60] var_1_6 = __VERIFIER_nondet_float() [L61] CALL assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854776000e+12F && var_1_6 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=54/5, var_1_9=48/5] [L20] COND FALSE !(!cond) [L61] RET assume_abort_if_not((var_1_6 >= 0.0F && var_1_6 <= -1.0e-20F) || (var_1_6 <= 9223372.036854776000e+12F && var_1_6 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=54/5, var_1_9=48/5] [L62] var_1_7 = __VERIFIER_nondet_float() [L63] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=257/2, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L64] var_1_12 = __VERIFIER_nondet_double() [L65] CALL assume_abort_if_not((var_1_12 >= -922337.2036854765600e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not((var_1_12 >= -922337.2036854765600e+13F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854765600e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=17/2, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L66] var_1_14 = __VERIFIER_nondet_float() [L67] CALL assume_abort_if_not((var_1_14 >= -922337.2036854776000e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not((var_1_14 >= -922337.2036854776000e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L68] CALL assume_abort_if_not(var_1_14 != 0.0F) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_14 != 0.0F) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=128, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L69] var_1_15 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_15 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=127, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_15 >= 127) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=127, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L71] CALL assume_abort_if_not(var_1_15 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=127, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_15 <= 254) VAL [isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=128, var_1_14=133, var_1_15=127, var_1_1=1, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L85] RET updateVariables() [L86] CALL step() [L35] COND TRUE ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < (last_1_var_1_13 + last_1_var_1_13) [L36] var_1_9 = var_1_12 [L38] COND TRUE var_1_9 <= (16.2f / var_1_14) [L39] var_1_13 = (var_1_15 - 5) [L41] unsigned char stepLocal_0 = var_1_9 > var_1_9; [L42] COND TRUE stepLocal_0 && var_1_4 [L43] COND TRUE ((((var_1_9) > ((- var_1_9))) ? (var_1_9) : ((- var_1_9)))) != var_1_9 [L44] COND TRUE ! (var_1_9 >= (var_1_6 - var_1_7)) [L45] var_1_1 = var_1_13 [L86] RET step() [L87] CALL, EXPR property() [L77-L78] return ((((var_1_9 > var_1_9) && var_1_4) ? ((((((var_1_9) > ((- var_1_9))) ? (var_1_9) : ((- var_1_9)))) != var_1_9) ? ((! (var_1_9 >= (var_1_6 - var_1_7))) ? (var_1_1 == ((unsigned long int) var_1_13)) : (var_1_1 == ((unsigned long int) var_1_13))) : (var_1_1 == ((unsigned long int) var_1_13))) : (var_1_1 == ((unsigned long int) var_1_13))) && ((((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < (last_1_var_1_13 + last_1_var_1_13)) ? (var_1_9 == ((double) var_1_12)) : 1)) && ((var_1_9 <= (16.2f / var_1_14)) ? (var_1_13 == ((unsigned char) (var_1_15 - 5))) : 1) ; [L87] RET, EXPR property() [L87] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=122, var_1_14=133, var_1_15=127, var_1_1=122, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=128, var_1_12=48/5, var_1_13=122, var_1_14=133, var_1_15=127, var_1_1=122, var_1_4=1, var_1_6=135, var_1_7=134, var_1_9=48/5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 22:07:01,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0106173d0264f3b7073aa037c767f5a06a37b054d6eaa32bc9517002adc60cc2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:07:04,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:07:04,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-21 22:07:04,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:07:04,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:07:04,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:07:04,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:07:04,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:07:04,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:07:04,794 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:07:04,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:07:04,795 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:07:04,796 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:07:04,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:07:04,798 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:07:04,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:07:04,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:07:04,800 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:07:04,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:07:04,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:07:04,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:07:04,802 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:07:04,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:07:04,803 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:07:04,804 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:07:04,804 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:07:04,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:07:04,805 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:07:04,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:07:04,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:07:04,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:07:04,807 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:07:04,807 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:07:04,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:07:04,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:07:04,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:07:04,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:07:04,809 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:07:04,809 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:07:04,809 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:07:04,810 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:07:04,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:07:04,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:07:04,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:07:04,811 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:07:04,811 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0106173d0264f3b7073aa037c767f5a06a37b054d6eaa32bc9517002adc60cc2 [2023-11-21 22:07:05,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:07:05,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:07:05,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:07:05,310 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:07:05,311 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:07:05,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i [2023-11-21 22:07:08,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:07:08,914 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:07:08,915 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i [2023-11-21 22:07:08,927 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data/43c157033/c56b721b650f4e58900d2b98c96f8ad8/FLAGf421aa3b0 [2023-11-21 22:07:08,949 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/data/43c157033/c56b721b650f4e58900d2b98c96f8ad8 [2023-11-21 22:07:08,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:07:08,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:07:08,961 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:08,961 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:07:08,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:07:08,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:08" (1/1) ... [2023-11-21 22:07:08,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b7c12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:08, skipping insertion in model container [2023-11-21 22:07:08,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:07:08" (1/1) ... [2023-11-21 22:07:09,014 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:07:09,253 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_6416d34c-b03b-493c-b7cb-428611adf9a2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i[915,928] [2023-11-21 22:07:09,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:09,323 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:07:09,340 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_6416d34c-b03b-493c-b7cb-428611adf9a2/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-36.i[915,928] [2023-11-21 22:07:09,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:07:09,388 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:07:09,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09 WrapperNode [2023-11-21 22:07:09,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:07:09,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:09,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:07:09,393 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:07:09,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,481 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 84 [2023-11-21 22:07:09,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:07:09,486 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:07:09,486 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:07:09,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:07:09,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,518 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,546 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:07:09,548 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:07:09,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:07:09,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:07:09,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:07:09,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (1/1) ... [2023-11-21 22:07:09,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:07:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:09,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:07:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:07:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:07:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 22:07:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:07:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:07:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:07:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:07:09,792 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:07:09,794 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:07:14,636 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:07:14,741 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:07:14,741 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 22:07:14,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:14 BoogieIcfgContainer [2023-11-21 22:07:14,743 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:07:14,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:07:14,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:07:14,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:07:14,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:07:08" (1/3) ... [2023-11-21 22:07:14,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2429fba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:07:14, skipping insertion in model container [2023-11-21 22:07:14,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:07:09" (2/3) ... [2023-11-21 22:07:14,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2429fba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:07:14, skipping insertion in model container [2023-11-21 22:07:14,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:07:14" (3/3) ... [2023-11-21 22:07:14,753 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-36.i [2023-11-21 22:07:14,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:07:14,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:07:14,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:07:14,844 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=PETRI_NET, 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;@134bc105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:07:14,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:07:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-21 22:07:14,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 22:07:14,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:14,867 INFO L195 NwaCegarLoop]: trace histogram [9, 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] [2023-11-21 22:07:14,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:14,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:14,875 INFO L85 PathProgramCache]: Analyzing trace with hash 672890832, now seen corresponding path program 1 times [2023-11-21 22:07:14,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:07:14,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704869421] [2023-11-21 22:07:14,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:14,892 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 [2023-11-21 22:07:14,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:07:14,897 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/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) [2023-11-21 22:07:14,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6416d34c-b03b-493c-b7cb-428611adf9a2/bin/uautomizer-verify-bycVGegfSx/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 [2023-11-21 22:07:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:07:15,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:07:32,070 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-21 22:07:32,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:07:42,363 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-21 22:07:42,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:07:42,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704869421] [2023-11-21 22:07:42,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704869421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:07:42,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:07:42,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2023-11-21 22:07:42,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920349333] [2023-11-21 22:07:42,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:07:42,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:07:42,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:07:42,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:07:42,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:07:42,431 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 10 states, 8 states have (on average 3.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-21 22:07:45,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:47,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:49,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:51,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:52,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:54,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:56,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 22:07:58,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []