./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB --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 414a4601eebd09cb80a79ffd2e377f75ab51a6dae6dbb936188e57c588481289 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:06:10,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:06:10,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:06:10,209 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:06:10,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:06:10,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:06:10,248 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:06:10,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:06:10,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:06:10,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:06:10,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:06:10,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:06:10,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:06:10,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:06:10,250 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:06:10,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:06:10,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:06:10,252 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:06:10,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:06:10,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:06:10,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:06:10,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:06:10,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:06:10,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:06:10,254 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:06:10,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:06:10,255 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:06:10,255 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:06:10,255 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:06:10,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:10,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:10,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:10,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:10,256 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:06:10,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:10,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:10,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:10,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:10,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:06:10,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:06:10,258 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:06:10,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:06:10,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:06:10,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:06:10,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:06:10,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:06:10,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:06:10,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:06:10,259 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 414a4601eebd09cb80a79ffd2e377f75ab51a6dae6dbb936188e57c588481289 [2024-11-27 20:06:10,639 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:06:10,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:06:10,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:06:10,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:06:10,663 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:06:10,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i [2024-11-27 20:06:13,949 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/814ff930f/574775c4e6bd44d5a83e1edc99be5133/FLAGf01e6e1de [2024-11-27 20:06:14,336 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:06:14,337 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i [2024-11-27 20:06:14,349 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/814ff930f/574775c4e6bd44d5a83e1edc99be5133/FLAGf01e6e1de [2024-11-27 20:06:14,373 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/814ff930f/574775c4e6bd44d5a83e1edc99be5133 [2024-11-27 20:06:14,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:06:14,379 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:06:14,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:14,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:06:14,393 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:06:14,394 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,398 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed01837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14, skipping insertion in model container [2024-11-27 20:06:14,398 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,432 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:06:14,631 WARN L250 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_ad32854a-042e-42f7-aed9-a69d57b92173/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i[915,928] [2024-11-27 20:06:14,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:14,758 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:06:14,770 WARN L250 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_ad32854a-042e-42f7-aed9-a69d57b92173/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i[915,928] [2024-11-27 20:06:14,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:14,862 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:06:14,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14 WrapperNode [2024-11-27 20:06:14,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:14,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:14,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:06:14,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:06:14,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,927 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2024-11-27 20:06:14,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:14,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:06:14,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:06:14,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:06:14,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,942 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,958 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:06:14,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,967 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:06:14,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:06:14,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:06:14,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:06:14,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (1/1) ... [2024-11-27 20:06:14,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:15,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:15,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:06:15,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:06:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:06:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:06:15,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:06:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:06:15,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:06:15,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:06:15,170 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:06:15,173 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:06:15,623 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-27 20:06:15,623 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:06:15,634 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:06:15,634 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:06:15,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:15 BoogieIcfgContainer [2024-11-27 20:06:15,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:06:15,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:06:15,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:06:15,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:06:15,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:06:14" (1/3) ... [2024-11-27 20:06:15,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444a9989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:15, skipping insertion in model container [2024-11-27 20:06:15,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:14" (2/3) ... [2024-11-27 20:06:15,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444a9989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:15, skipping insertion in model container [2024-11-27 20:06:15,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:15" (3/3) ... [2024-11-27 20:06:15,647 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-42.i [2024-11-27 20:06:15,662 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:06:15,664 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-while_file-42.i that has 2 procedures, 53 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:06:15,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:06:15,746 INFO L333 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, 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;@30853ad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:06:15,746 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:06:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 20:06:15,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 20:06:15,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:15,763 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:15,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:15,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 992786080, now seen corresponding path program 1 times [2024-11-27 20:06:15,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:15,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310433538] [2024-11-27 20:06:15,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-27 20:06:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:16,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310433538] [2024-11-27 20:06:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310433538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:16,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158402123] [2024-11-27 20:06:16,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:16,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:16,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:16,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:16,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:06:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:16,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:06:16,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-27 20:06:16,379 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158402123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:06:16,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945976849] [2024-11-27 20:06:16,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:16,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:06:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:16,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:06:16,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:06:16,417 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:16,441 INFO L93 Difference]: Finished difference Result 99 states and 162 transitions. [2024-11-27 20:06:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:06:16,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2024-11-27 20:06:16,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:16,450 INFO L225 Difference]: With dead ends: 99 [2024-11-27 20:06:16,451 INFO L226 Difference]: Without dead ends: 49 [2024-11-27 20:06:16,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:06:16,461 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:16,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-27 20:06:16,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-27 20:06:16,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 20:06:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2024-11-27 20:06:16,508 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 87 [2024-11-27 20:06:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:16,509 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2024-11-27 20:06:16,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:16,509 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2024-11-27 20:06:16,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 20:06:16,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:16,513 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:16,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:06:16,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:06:16,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:16,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash -384634916, now seen corresponding path program 1 times [2024-11-27 20:06:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418066044] [2024-11-27 20:06:16,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418066044] [2024-11-27 20:06:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418066044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:06:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635935828] [2024-11-27 20:06:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:17,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:06:17,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:17,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:06:17,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:06:17,430 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:17,624 INFO L93 Difference]: Finished difference Result 142 states and 208 transitions. [2024-11-27 20:06:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:06:17,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 87 [2024-11-27 20:06:17,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:17,632 INFO L225 Difference]: With dead ends: 142 [2024-11-27 20:06:17,632 INFO L226 Difference]: Without dead ends: 96 [2024-11-27 20:06:17,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:17,637 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 70 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:17,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 195 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:06:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-27 20:06:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2024-11-27 20:06:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 20:06:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2024-11-27 20:06:17,678 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 87 [2024-11-27 20:06:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:17,678 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2024-11-27 20:06:17,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2024-11-27 20:06:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:17,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:17,682 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:17,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:06:17,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:17,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:17,685 INFO L85 PathProgramCache]: Analyzing trace with hash 734981921, now seen corresponding path program 1 times [2024-11-27 20:06:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415603001] [2024-11-27 20:06:17,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415603001] [2024-11-27 20:06:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415603001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:18,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:18,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:06:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28404779] [2024-11-27 20:06:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:18,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:06:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:18,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:06:18,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:06:18,513 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:18,742 INFO L93 Difference]: Finished difference Result 121 states and 176 transitions. [2024-11-27 20:06:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:06:18,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-11-27 20:06:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:18,748 INFO L225 Difference]: With dead ends: 121 [2024-11-27 20:06:18,748 INFO L226 Difference]: Without dead ends: 75 [2024-11-27 20:06:18,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:18,750 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 66 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:18,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 93 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:06:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-27 20:06:18,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-27 20:06:18,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 20:06:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 107 transitions. [2024-11-27 20:06:18,792 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 107 transitions. Word has length 88 [2024-11-27 20:06:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:18,792 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 107 transitions. [2024-11-27 20:06:18,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 107 transitions. [2024-11-27 20:06:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:18,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:18,795 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:18,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:06:18,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:18,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1415040291, now seen corresponding path program 1 times [2024-11-27 20:06:18,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:18,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128433891] [2024-11-27 20:06:18,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:18,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:19,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:19,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128433891] [2024-11-27 20:06:19,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128433891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:19,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:19,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:06:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208437914] [2024-11-27 20:06:19,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:19,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:19,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:19,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:19,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:19,333 INFO L87 Difference]: Start difference. First operand 75 states and 107 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:19,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:19,763 INFO L93 Difference]: Finished difference Result 211 states and 305 transitions. [2024-11-27 20:06:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:06:19,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-11-27 20:06:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:19,769 INFO L225 Difference]: With dead ends: 211 [2024-11-27 20:06:19,770 INFO L226 Difference]: Without dead ends: 165 [2024-11-27 20:06:19,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:06:19,773 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 97 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:19,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 290 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:06:19,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-27 20:06:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2024-11-27 20:06:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-27 20:06:19,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2024-11-27 20:06:19,833 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 88 [2024-11-27 20:06:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:19,834 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2024-11-27 20:06:19,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2024-11-27 20:06:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:19,838 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:19,838 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:19,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:06:19,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:19,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash 135176613, now seen corresponding path program 1 times [2024-11-27 20:06:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:19,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023232363] [2024-11-27 20:06:19,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-27 20:06:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023232363] [2024-11-27 20:06:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023232363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035417555] [2024-11-27 20:06:20,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:20,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:20,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:20,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:20,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:06:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:20,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:06:20,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-27 20:06:21,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:21,799 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-27 20:06:21,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035417555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:21,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:06:21,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-27 20:06:21,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554714396] [2024-11-27 20:06:21,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:21,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:06:21,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:21,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:06:21,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:06:21,802 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 20:06:23,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:23,144 INFO L93 Difference]: Finished difference Result 382 states and 511 transitions. [2024-11-27 20:06:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-27 20:06:23,145 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 88 [2024-11-27 20:06:23,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:23,149 INFO L225 Difference]: With dead ends: 382 [2024-11-27 20:06:23,149 INFO L226 Difference]: Without dead ends: 336 [2024-11-27 20:06:23,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:06:23,157 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 363 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:23,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 358 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:06:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-27 20:06:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 204. [2024-11-27 20:06:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 143 states have internal predecessors, (177), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-27 20:06:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 273 transitions. [2024-11-27 20:06:23,261 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 273 transitions. Word has length 88 [2024-11-27 20:06:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:23,263 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 273 transitions. [2024-11-27 20:06:23,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-27 20:06:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 273 transitions. [2024-11-27 20:06:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:23,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:23,270 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:23,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:06:23,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:23,471 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:23,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:23,471 INFO L85 PathProgramCache]: Analyzing trace with hash -875940637, now seen corresponding path program 1 times [2024-11-27 20:06:23,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:23,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451798017] [2024-11-27 20:06:23,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:23,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:06:23,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123847960] [2024-11-27 20:06:23,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:23,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:23,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:23,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:23,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:06:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:23,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 20:06:23,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-27 20:06:24,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:25,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:25,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451798017] [2024-11-27 20:06:25,101 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:06:25,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123847960] [2024-11-27 20:06:25,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123847960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:25,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:25,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-27 20:06:25,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617108832] [2024-11-27 20:06:25,102 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:25,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:06:25,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:25,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:06:25,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:06:25,104 INFO L87 Difference]: Start difference. First operand 204 states and 273 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:26,023 INFO L93 Difference]: Finished difference Result 618 states and 807 transitions. [2024-11-27 20:06:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:06:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2024-11-27 20:06:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:26,029 INFO L225 Difference]: With dead ends: 618 [2024-11-27 20:06:26,030 INFO L226 Difference]: Without dead ends: 513 [2024-11-27 20:06:26,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:06:26,033 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 156 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:26,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 426 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:06:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-27 20:06:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 424. [2024-11-27 20:06:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 308 states have (on average 1.2402597402597402) internal successors, (382), 310 states have internal predecessors, (382), 88 states have call successors, (88), 27 states have call predecessors, (88), 27 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-27 20:06:26,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 558 transitions. [2024-11-27 20:06:26,150 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 558 transitions. Word has length 88 [2024-11-27 20:06:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:26,151 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 558 transitions. [2024-11-27 20:06:26,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:26,151 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 558 transitions. [2024-11-27 20:06:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:26,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:26,153 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:26,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:06:26,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-27 20:06:26,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:26,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:26,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1462746651, now seen corresponding path program 1 times [2024-11-27 20:06:26,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:26,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527142545] [2024-11-27 20:06:26,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:26,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:06:26,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999596488] [2024-11-27 20:06:26,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:26,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:26,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:26,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:26,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:06:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:26,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-27 20:06:26,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-27 20:06:27,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527142545] [2024-11-27 20:06:28,268 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 20:06:28,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999596488] [2024-11-27 20:06:28,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999596488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:28,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:28,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-27 20:06:28,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379105923] [2024-11-27 20:06:28,269 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:28,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:06:28,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:28,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:06:28,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:06:28,272 INFO L87 Difference]: Start difference. First operand 424 states and 558 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:29,341 INFO L93 Difference]: Finished difference Result 833 states and 1104 transitions. [2024-11-27 20:06:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:06:29,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2024-11-27 20:06:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:29,347 INFO L225 Difference]: With dead ends: 833 [2024-11-27 20:06:29,348 INFO L226 Difference]: Without dead ends: 672 [2024-11-27 20:06:29,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:06:29,350 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 126 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:29,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 511 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:06:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-27 20:06:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 535. [2024-11-27 20:06:29,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 387 states have (on average 1.2325581395348837) internal successors, (477), 389 states have internal predecessors, (477), 112 states have call successors, (112), 35 states have call predecessors, (112), 35 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-27 20:06:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 701 transitions. [2024-11-27 20:06:29,487 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 701 transitions. Word has length 88 [2024-11-27 20:06:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:29,488 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 701 transitions. [2024-11-27 20:06:29,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 701 transitions. [2024-11-27 20:06:29,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:06:29,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:29,492 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:29,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:06:29,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:06:29,696 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:29,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:29,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1226323989, now seen corresponding path program 1 times [2024-11-27 20:06:29,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:29,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164043473] [2024-11-27 20:06:29,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:29,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 20:06:29,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014354894] [2024-11-27 20:06:29,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:29,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:06:29,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:29,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:06:29,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:06:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:06:29,931 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 20:06:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 20:06:30,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 20:06:30,074 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 20:06:30,075 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 20:06:30,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:06:30,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 20:06:30,281 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:30,366 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 20:06:30,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 08:06:30 BoogieIcfgContainer [2024-11-27 20:06:30,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 20:06:30,379 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 20:06:30,380 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 20:06:30,380 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 20:06:30,381 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:15" (3/4) ... [2024-11-27 20:06:30,383 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 20:06:30,384 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 20:06:30,385 INFO L158 Benchmark]: Toolchain (without parser) took 16006.62ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 93.5MB in the beginning and 264.2MB in the end (delta: -170.7MB). Peak memory consumption was 59.4MB. Max. memory is 16.1GB. [2024-11-27 20:06:30,386 INFO L158 Benchmark]: CDTParser took 0.86ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:30,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.46ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 79.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 20:06:30,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.78ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 76.0MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:30,387 INFO L158 Benchmark]: Boogie Preprocessor took 58.60ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 71.1MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:30,387 INFO L158 Benchmark]: RCFGBuilder took 647.60ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 51.2MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-27 20:06:30,387 INFO L158 Benchmark]: TraceAbstraction took 14740.69ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 50.5MB in the beginning and 264.3MB in the end (delta: -213.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-11-27 20:06:30,388 INFO L158 Benchmark]: Witness Printer took 4.98ms. Allocated memory is still 352.3MB. Free memory was 264.3MB in the beginning and 264.2MB in the end (delta: 72.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 20:06:30,390 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.46ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 79.2MB in the end (delta: 13.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.78ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 76.0MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.60ms. Allocated memory is still 117.4MB. Free memory was 76.0MB in the beginning and 71.1MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 647.60ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 51.2MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 14740.69ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 50.5MB in the beginning and 264.3MB in the end (delta: -213.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Witness Printer took 4.98ms. Allocated memory is still 352.3MB. Free memory was 264.3MB in the beginning and 264.2MB in the end (delta: 72.0kB). 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 123, overapproximation of someBinaryFLOATComparisonOperation at line 109, overapproximation of someBinaryFLOATComparisonOperation at line 54, overapproximation of someBinaryFLOATComparisonOperation at line 85, overapproximation of someBinaryFLOATComparisonOperation at line 111, overapproximation of someUnaryDOUBLEoperation at line 30. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = 16; [L23] signed char var_1_5 = -8; [L24] unsigned char var_1_6 = 10; [L25] unsigned char var_1_7 = 128; [L26] unsigned char var_1_8 = 1; [L27] unsigned char var_1_11 = 0; [L28] unsigned char var_1_12 = 0; [L29] signed short int var_1_13 = 200; [L30] float var_1_14 = -0.8; [L31] float var_1_15 = 127.25; [L32] float var_1_16 = 3.5; [L33] unsigned short int var_1_17 = 16; [L34] unsigned char var_1_19 = 1; [L35] unsigned char var_1_20 = 0; [L36] signed short int last_1_var_1_1 = 16; [L37] unsigned char last_1_var_1_6 = 10; [L38] unsigned char last_1_var_1_8 = 1; [L39] signed short int last_1_var_1_13 = 200; VAL [isInitial=0, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-8, var_1_6=10, var_1_7=128, var_1_8=1] [L127] isInitial = 1 [L128] FCALL initially() [L130] CALL updateLastVariables() [L117] last_1_var_1_1 = var_1_1 [L118] last_1_var_1_6 = var_1_6 [L119] last_1_var_1_8 = var_1_8 [L120] last_1_var_1_13 = var_1_13 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=-8, var_1_6=10, var_1_7=128, var_1_8=1] [L130] RET updateLastVariables() [L131] CALL updateVariables() [L96] var_1_5 = __VERIFIER_nondet_char() [L97] CALL assume_abort_if_not(var_1_5 >= -127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L97] RET assume_abort_if_not(var_1_5 >= -127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L98] CALL assume_abort_if_not(var_1_5 <= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L98] RET assume_abort_if_not(var_1_5 <= 127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=128, var_1_8=1] [L99] var_1_7 = __VERIFIER_nondet_uchar() [L100] CALL assume_abort_if_not(var_1_7 >= 127) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L100] RET assume_abort_if_not(var_1_7 >= 127) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L101] CALL assume_abort_if_not(var_1_7 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L101] RET assume_abort_if_not(var_1_7 <= 254) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=0, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L102] var_1_11 = __VERIFIER_nondet_uchar() [L103] CALL assume_abort_if_not(var_1_11 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L103] RET assume_abort_if_not(var_1_11 >= 1) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L104] CALL assume_abort_if_not(var_1_11 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L104] RET assume_abort_if_not(var_1_11 <= 1) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L105] var_1_12 = __VERIFIER_nondet_uchar() [L106] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L106] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L107] CALL assume_abort_if_not(var_1_12 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L107] RET assume_abort_if_not(var_1_12 <= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_15=509/4, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L108] var_1_15 = __VERIFIER_nondet_float() [L109] CALL assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L109] RET assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_16=7/2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L110] var_1_16 = __VERIFIER_nondet_float() [L111] CALL assume_abort_if_not((var_1_16 >= -461168.6018427382800e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 4611686.018427382800e+12F && var_1_16 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L111] RET assume_abort_if_not((var_1_16 >= -461168.6018427382800e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 4611686.018427382800e+12F && var_1_16 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L112] var_1_20 = __VERIFIER_nondet_uchar() [L113] CALL assume_abort_if_not(var_1_20 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L113] RET assume_abort_if_not(var_1_20 >= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L114] CALL assume_abort_if_not(var_1_20 <= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L114] RET assume_abort_if_not(var_1_20 <= 0) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L131] RET updateVariables() [L132] CALL step() [L43] signed long int stepLocal_6 = last_1_var_1_1; [L44] unsigned char stepLocal_5 = ((((last_1_var_1_1) < (8)) ? (last_1_var_1_1) : (8))) <= var_1_5; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_5=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L45] COND TRUE stepLocal_5 || last_1_var_1_8 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_6=16, var_1_11=1, var_1_12=0, var_1_13=200, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L46] COND FALSE !(stepLocal_6 <= last_1_var_1_6) [L49] var_1_14 = var_1_16 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L54] COND FALSE !(var_1_14 <= var_1_15) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=10, var_1_7=254, var_1_8=1] [L57] COND TRUE var_1_5 >= -2 [L58] var_1_6 = (var_1_7 - 100) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L60] unsigned char stepLocal_4 = var_1_6; [L61] signed long int stepLocal_3 = var_1_6 / var_1_7; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_3=0, stepLocal_4=154, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L62] COND TRUE last_1_var_1_13 >= stepLocal_3 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_4=154, var_1_11=1, var_1_12=0, var_1_13=200, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L63] COND TRUE stepLocal_4 != ((((((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) > (var_1_5)) ? (((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) : (var_1_5))) [L64] var_1_13 = var_1_7 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L71] unsigned char stepLocal_7 = var_1_6; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_7=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L72] COND FALSE !(stepLocal_7 > var_1_6) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L75] unsigned char stepLocal_0 = var_1_6; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=16, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L76] COND TRUE \read(var_1_19) [L77] var_1_1 = ((((var_1_6) > (var_1_6)) ? (var_1_6) : (var_1_6))) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L83] unsigned char stepLocal_2 = var_1_19 && var_1_19; [L84] unsigned char stepLocal_1 = var_1_7; VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, stepLocal_1=254, stepLocal_2=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=1] [L85] COND FALSE !((49.5f <= var_1_14) && stepLocal_2) [L92] var_1_8 = var_1_12 VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, stepLocal_0=154, stepLocal_1=254, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] [L132] RET step() [L133] CALL, EXPR property() [L123-L124] return ((((((var_1_19 ? (var_1_1 == ((signed short int) ((((var_1_6) > (var_1_6)) ? (var_1_6) : (var_1_6))))) : ((((((var_1_5) < 0 ) ? -(var_1_5) : (var_1_5))) >= var_1_6) ? (var_1_1 == ((signed short int) var_1_5)) : 1)) && ((var_1_5 >= -2) ? (var_1_6 == ((unsigned char) (var_1_7 - 100))) : 1)) && (((49.5f <= var_1_14) && (var_1_19 && var_1_19)) ? ((var_1_13 < var_1_7) ? (var_1_8 == ((unsigned char) (var_1_19 || var_1_11))) : (var_1_8 == ((unsigned char) var_1_11))) : (var_1_8 == ((unsigned char) var_1_12)))) && ((last_1_var_1_13 >= (var_1_6 / var_1_7)) ? ((var_1_6 != ((((((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) > (var_1_5)) ? (((((var_1_6) > (last_1_var_1_13)) ? (var_1_6) : (last_1_var_1_13)))) : (var_1_5)))) ? (var_1_13 == ((signed short int) var_1_7)) : (var_1_13 == ((signed short int) last_1_var_1_13))) : (var_1_13 == ((signed short int) var_1_6)))) && (((((((last_1_var_1_1) < (8)) ? (last_1_var_1_1) : (8))) <= var_1_5) || last_1_var_1_8) ? ((last_1_var_1_1 <= last_1_var_1_6) ? (var_1_14 == ((float) (var_1_15 + var_1_16))) : (var_1_14 == ((float) var_1_16))) : (var_1_14 == ((float) var_1_16)))) && ((var_1_6 > var_1_6) ? (var_1_17 == ((unsigned short int) ((((25) > ((var_1_13 + var_1_6))) ? (25) : ((var_1_13 + var_1_6)))))) : 1)) && ((var_1_14 <= var_1_15) ? (var_1_19 == ((unsigned char) (var_1_12 || var_1_20))) : 1) ; VAL [\result=0, isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] [L133] RET, EXPR property() [L133] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] [L19] reach_error() VAL [isInitial=1, last_1_var_1_13=200, last_1_var_1_1=16, last_1_var_1_6=10, last_1_var_1_8=1, var_1_11=1, var_1_12=0, var_1_13=254, var_1_14=2, var_1_16=2, var_1_17=16, var_1_19=1, var_1_1=154, var_1_20=0, var_1_5=127, var_1_6=154, var_1_7=254, var_1_8=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.6s, OverallIterations: 8, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 892 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 878 mSDsluCounter, 1944 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1379 mSDsCounter, 290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1224 IncrementalHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 290 mSolverCounterUnsat, 565 mSDtfsCounter, 1224 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 661 GetRequests, 559 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=535occurred in iteration=7, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 425 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 1143 NumberOfCodeBlocks, 1143 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 867 ConstructedInterpolants, 2 QuantifiedInterpolants, 3473 SizeOfPredicates, 16 NumberOfNonLiveVariables, 930 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 2534/2640 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-27 20:06:30,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB --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 414a4601eebd09cb80a79ffd2e377f75ab51a6dae6dbb936188e57c588481289 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:06:33,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:06:33,610 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-27 20:06:33,616 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:06:33,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:06:33,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:06:33,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:06:33,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:06:33,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:06:33,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:06:33,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:06:33,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:06:33,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:06:33,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:06:33,678 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:06:33,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:06:33,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:06:33,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:06:33,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:06:33,679 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:06:33,680 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:06:33,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:06:33,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:33,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:33,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:33,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:33,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:06:33,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:33,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:33,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:33,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:06:33,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:06:33,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:06:33,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:06:33,686 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 414a4601eebd09cb80a79ffd2e377f75ab51a6dae6dbb936188e57c588481289 [2024-11-27 20:06:34,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:06:34,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:06:34,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:06:34,067 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:06:34,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:06:34,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i [2024-11-27 20:06:37,488 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/ceb10cb6d/ab6616af83c44ee9a778cc488db7a81a/FLAG111b88c22 [2024-11-27 20:06:37,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:06:37,787 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i [2024-11-27 20:06:37,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/ceb10cb6d/ab6616af83c44ee9a778cc488db7a81a/FLAG111b88c22 [2024-11-27 20:06:37,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/data/ceb10cb6d/ab6616af83c44ee9a778cc488db7a81a [2024-11-27 20:06:37,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:06:37,856 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:06:37,859 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:37,861 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:06:37,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:06:37,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:37" (1/1) ... [2024-11-27 20:06:37,868 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df51aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:37, skipping insertion in model container [2024-11-27 20:06:37,868 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:37" (1/1) ... [2024-11-27 20:06:37,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:06:38,102 WARN L250 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_ad32854a-042e-42f7-aed9-a69d57b92173/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i[915,928] [2024-11-27 20:06:38,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:38,226 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:06:38,240 WARN L250 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_ad32854a-042e-42f7-aed9-a69d57b92173/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-42.i[915,928] [2024-11-27 20:06:38,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:38,334 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:06:38,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38 WrapperNode [2024-11-27 20:06:38,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:38,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:38,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:06:38,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:06:38,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,397 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 121 [2024-11-27 20:06:38,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:38,398 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:06:38,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:06:38,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:06:38,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,428 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:06:38,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,458 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:06:38,462 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:06:38,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:06:38,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:06:38,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (1/1) ... [2024-11-27 20:06:38,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:38,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:38,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:06:38,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:06:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:06:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-27 20:06:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:06:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:06:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:06:38,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:06:38,663 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:06:38,665 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:06:39,351 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-27 20:06:39,351 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:06:39,363 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:06:39,363 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:06:39,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:39 BoogieIcfgContainer [2024-11-27 20:06:39,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:06:39,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:06:39,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:06:39,374 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:06:39,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:06:37" (1/3) ... [2024-11-27 20:06:39,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bafeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:39, skipping insertion in model container [2024-11-27 20:06:39,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:38" (2/3) ... [2024-11-27 20:06:39,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25bafeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:39, skipping insertion in model container [2024-11-27 20:06:39,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:39" (3/3) ... [2024-11-27 20:06:39,380 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-42.i [2024-11-27 20:06:39,397 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:06:39,399 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_50-while_file-42.i that has 2 procedures, 53 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:06:39,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:06:39,492 INFO L333 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, 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;@171e765e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:06:39,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:06:39,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 20:06:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 20:06:39,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:39,512 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:39,512 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:39,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash 992786080, now seen corresponding path program 1 times [2024-11-27 20:06:39,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:39,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853179336] [2024-11-27 20:06:39,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:39,530 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 [2024-11-27 20:06:39,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:39,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:39,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:39,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:06:39,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-27 20:06:39,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:39,903 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:39,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853179336] [2024-11-27 20:06:39,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853179336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:39,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:39,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:06:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733664093] [2024-11-27 20:06:39,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:39,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:06:39,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:39,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:06:39,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:06:39,950 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 39 states have internal predecessors, (54), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:39,973 INFO L93 Difference]: Finished difference Result 99 states and 162 transitions. [2024-11-27 20:06:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:06:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2024-11-27 20:06:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:39,981 INFO L225 Difference]: With dead ends: 99 [2024-11-27 20:06:39,982 INFO L226 Difference]: Without dead ends: 49 [2024-11-27 20:06:39,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:06:39,988 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:39,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-27 20:06:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-27 20:06:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-27 20:06:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2024-11-27 20:06:40,036 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 87 [2024-11-27 20:06:40,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:40,036 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2024-11-27 20:06:40,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-27 20:06:40,037 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2024-11-27 20:06:40,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 20:06:40,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:40,044 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:40,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-27 20:06:40,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:40,245 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:40,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:40,246 INFO L85 PathProgramCache]: Analyzing trace with hash -384634916, now seen corresponding path program 1 times [2024-11-27 20:06:40,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:40,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388371524] [2024-11-27 20:06:40,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:40,246 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 [2024-11-27 20:06:40,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:40,248 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:40,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:40,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:06:40,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:40,948 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:40,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:40,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388371524] [2024-11-27 20:06:40,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388371524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:40,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:40,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023734693] [2024-11-27 20:06:40,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:40,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:06:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:40,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:06:40,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:06:40,952 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:41,394 INFO L93 Difference]: Finished difference Result 142 states and 208 transitions. [2024-11-27 20:06:41,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:06:41,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 87 [2024-11-27 20:06:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:41,403 INFO L225 Difference]: With dead ends: 142 [2024-11-27 20:06:41,403 INFO L226 Difference]: Without dead ends: 96 [2024-11-27 20:06:41,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:41,406 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 67 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:41,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 195 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:06:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-27 20:06:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2024-11-27 20:06:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 48 states have (on average 1.25) internal successors, (60), 48 states have internal predecessors, (60), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 20:06:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2024-11-27 20:06:41,445 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 87 [2024-11-27 20:06:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:41,446 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2024-11-27 20:06:41,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2024-11-27 20:06:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:41,448 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:41,449 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:41,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:41,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:41,649 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:41,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash 734981921, now seen corresponding path program 1 times [2024-11-27 20:06:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9724264] [2024-11-27 20:06:41,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:41,651 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 [2024-11-27 20:06:41,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:41,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:41,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:41,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:06:41,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:42,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:42,719 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:42,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9724264] [2024-11-27 20:06:42,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9724264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:42,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:42,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:06:42,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229102758] [2024-11-27 20:06:42,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:42,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:42,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:42,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:42,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:42,724 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:43,922 INFO L93 Difference]: Finished difference Result 211 states and 311 transitions. [2024-11-27 20:06:43,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:06:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-11-27 20:06:43,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:43,930 INFO L225 Difference]: With dead ends: 211 [2024-11-27 20:06:43,930 INFO L226 Difference]: Without dead ends: 165 [2024-11-27 20:06:43,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:06:43,932 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 97 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:43,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 294 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:06:43,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-27 20:06:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 119. [2024-11-27 20:06:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 79 states have internal predecessors, (102), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-27 20:06:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 174 transitions. [2024-11-27 20:06:43,971 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 174 transitions. Word has length 88 [2024-11-27 20:06:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:43,972 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 174 transitions. [2024-11-27 20:06:43,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 174 transitions. [2024-11-27 20:06:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:43,974 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:43,975 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:43,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-27 20:06:44,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:44,176 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:44,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:44,176 INFO L85 PathProgramCache]: Analyzing trace with hash -544881757, now seen corresponding path program 1 times [2024-11-27 20:06:44,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:44,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343149874] [2024-11-27 20:06:44,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:44,177 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 [2024-11-27 20:06:44,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:44,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:44,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:44,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:06:44,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:44,471 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:44,471 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343149874] [2024-11-27 20:06:44,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343149874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:44,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:44,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711947736] [2024-11-27 20:06:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:44,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:44,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:44,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:44,474 INFO L87 Difference]: Start difference. First operand 119 states and 174 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:44,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:44,651 INFO L93 Difference]: Finished difference Result 209 states and 308 transitions. [2024-11-27 20:06:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-11-27 20:06:44,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:44,661 INFO L225 Difference]: With dead ends: 209 [2024-11-27 20:06:44,661 INFO L226 Difference]: Without dead ends: 119 [2024-11-27 20:06:44,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:44,666 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:44,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:06:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-27 20:06:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-27 20:06:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 79 states have (on average 1.2658227848101267) internal successors, (100), 79 states have internal predecessors, (100), 36 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-27 20:06:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2024-11-27 20:06:44,722 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 88 [2024-11-27 20:06:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:44,722 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2024-11-27 20:06:44,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2024-11-27 20:06:44,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:44,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:44,727 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:44,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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)] Ended with exit code 0 [2024-11-27 20:06:44,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:44,931 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:44,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash 135176613, now seen corresponding path program 1 times [2024-11-27 20:06:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:44,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508621634] [2024-11-27 20:06:44,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:44,934 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 [2024-11-27 20:06:44,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:44,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:44,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (6)] Waiting until timeout for monitored process [2024-11-27 20:06:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:45,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:06:45,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 149 proven. 9 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-27 20:06:45,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 51 proven. 12 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-27 20:06:46,046 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508621634] [2024-11-27 20:06:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508621634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:06:46,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:06:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2024-11-27 20:06:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217799937] [2024-11-27 20:06:46,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:06:46,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:06:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:46,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:06:46,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:06:46,049 INFO L87 Difference]: Start difference. First operand 119 states and 172 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 20:06:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:47,639 INFO L93 Difference]: Finished difference Result 276 states and 367 transitions. [2024-11-27 20:06:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-27 20:06:47,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2024-11-27 20:06:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:47,649 INFO L225 Difference]: With dead ends: 276 [2024-11-27 20:06:47,649 INFO L226 Difference]: Without dead ends: 230 [2024-11-27 20:06:47,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056 [2024-11-27 20:06:47,651 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 151 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:47,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 375 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:06:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-27 20:06:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 204. [2024-11-27 20:06:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 143 states have internal predecessors, (177), 48 states have call successors, (48), 12 states have call predecessors, (48), 12 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-27 20:06:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 273 transitions. [2024-11-27 20:06:47,720 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 273 transitions. Word has length 88 [2024-11-27 20:06:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:47,720 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 273 transitions. [2024-11-27 20:06:47,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-27 20:06:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 273 transitions. [2024-11-27 20:06:47,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:47,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:47,726 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:47,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (6)] Ended with exit code 0 [2024-11-27 20:06:47,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-27 20:06:47,927 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:47,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -875940637, now seen corresponding path program 1 times [2024-11-27 20:06:47,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:47,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272051932] [2024-11-27 20:06:47,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:47,928 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 [2024-11-27 20:06:47,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:47,930 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:47,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (7)] Waiting until timeout for monitored process [2024-11-27 20:06:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:48,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:06:48,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-27 20:06:49,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:49,455 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272051932] [2024-11-27 20:06:49,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272051932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:49,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [684494136] [2024-11-27 20:06:49,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:49,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:06:49,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:06:49,461 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:06:49,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-27 20:06:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:49,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:06:49,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:50,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [684494136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:50,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:50,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-27 20:06:50,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24666513] [2024-11-27 20:06:50,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:50,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:50,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:50,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:50,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:06:50,790 INFO L87 Difference]: Start difference. First operand 204 states and 273 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:52,795 INFO L93 Difference]: Finished difference Result 586 states and 779 transitions. [2024-11-27 20:06:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:06:52,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-11-27 20:06:52,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:52,807 INFO L225 Difference]: With dead ends: 586 [2024-11-27 20:06:52,810 INFO L226 Difference]: Without dead ends: 481 [2024-11-27 20:06:52,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:06:52,812 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 115 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:52,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 334 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 20:06:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-27 20:06:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 408. [2024-11-27 20:06:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 296 states have (on average 1.25) internal successors, (370), 298 states have internal predecessors, (370), 88 states have call successors, (88), 23 states have call predecessors, (88), 23 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-27 20:06:52,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 546 transitions. [2024-11-27 20:06:52,914 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 546 transitions. Word has length 88 [2024-11-27 20:06:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:52,916 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 546 transitions. [2024-11-27 20:06:52,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 546 transitions. [2024-11-27 20:06:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-27 20:06:52,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:52,919 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:52,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:06:53,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-27 20:06:53,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:06:53,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:53,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1462746651, now seen corresponding path program 1 times [2024-11-27 20:06:53,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43658075] [2024-11-27 20:06:53,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:53,325 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 [2024-11-27 20:06:53,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:53,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:53,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (9)] Waiting until timeout for monitored process [2024-11-27 20:06:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:53,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:06:53,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 87 proven. 27 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-27 20:06:54,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:06:54,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-27 20:06:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43658075] [2024-11-27 20:06:54,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43658075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:06:54,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1250926740] [2024-11-27 20:06:54,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:54,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-27 20:06:54,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-27 20:06:54,765 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-27 20:06:54,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-27 20:06:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:55,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:06:55,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:06:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-27 20:06:56,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:06:56,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1250926740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:56,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:06:56,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2024-11-27 20:06:56,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008197920] [2024-11-27 20:06:56,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:56,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:56,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-27 20:06:56,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:56,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:06:56,158 INFO L87 Difference]: Start difference. First operand 408 states and 546 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:57,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:57,893 INFO L93 Difference]: Finished difference Result 714 states and 956 transitions. [2024-11-27 20:06:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:06:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 88 [2024-11-27 20:06:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:57,900 INFO L225 Difference]: With dead ends: 714 [2024-11-27 20:06:57,900 INFO L226 Difference]: Without dead ends: 553 [2024-11-27 20:06:57,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:06:57,905 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 66 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:57,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 278 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:06:57,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-27 20:06:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 511. [2024-11-27 20:06:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 369 states have (on average 1.2439024390243902) internal successors, (459), 371 states have internal predecessors, (459), 112 states have call successors, (112), 29 states have call predecessors, (112), 29 states have return successors, (112), 110 states have call predecessors, (112), 112 states have call successors, (112) [2024-11-27 20:06:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 683 transitions. [2024-11-27 20:06:58,005 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 683 transitions. Word has length 88 [2024-11-27 20:06:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:58,006 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 683 transitions. [2024-11-27 20:06:58,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-27 20:06:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 683 transitions. [2024-11-27 20:06:58,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-27 20:06:58,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:58,008 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:06:58,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (9)] Ended with exit code 0 [2024-11-27 20:06:58,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-27 20:06:58,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-27 20:06:58,412 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:58,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1226323989, now seen corresponding path program 1 times [2024-11-27 20:06:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-27 20:06:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74170893] [2024-11-27 20:06:58,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:58,413 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 [2024-11-27 20:06:58,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-27 20:06:58,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-27 20:06:58,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad32854a-042e-42f7-aed9-a69d57b92173/bin/uautomizer-verify-aQ6SnzHsRB/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 (11)] Waiting until timeout for monitored process [2024-11-27 20:06:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:58,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:06:58,581 INFO L279 TraceCheckSpWp]: Computing forward predicates...