./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.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_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1 --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 8b9b5c3584162f1ac164bc4062f8fb20bbcdce8e443da62cb4410d73442b6f23 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:05:09,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:05:09,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:05:09,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:05:09,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:05:09,250 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:05:09,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:05:09,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:05:09,251 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:05:09,251 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:05:09,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:05:09,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:05:09,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:05:09,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:05:09,252 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:05:09,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:05:09,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:05:09,253 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:05:09,254 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:05:09,254 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:05:09,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:05:09,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:05:09,255 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:05:09,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:05:09,256 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8b9b5c3584162f1ac164bc4062f8fb20bbcdce8e443da62cb4410d73442b6f23 [2024-12-02 06:05:09,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:05:09,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:05:09,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:05:09,531 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:05:09,532 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:05:09,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i [2024-12-02 06:05:12,207 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/9600ea771/09ddf1205fc44a52b069910dc5b06308/FLAG3fc7b49fe [2024-12-02 06:05:12,419 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:05:12,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i [2024-12-02 06:05:12,426 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/9600ea771/09ddf1205fc44a52b069910dc5b06308/FLAG3fc7b49fe [2024-12-02 06:05:12,439 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/9600ea771/09ddf1205fc44a52b069910dc5b06308 [2024-12-02 06:05:12,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:05:12,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:05:12,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:05:12,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:05:12,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:05:12,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65391147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12, skipping insertion in model container [2024-12-02 06:05:12,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,469 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:05:12,587 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i[916,929] [2024-12-02 06:05:12,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:05:12,684 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:05:12,693 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i[916,929] [2024-12-02 06:05:12,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:05:12,752 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:05:12,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12 WrapperNode [2024-12-02 06:05:12,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:05:12,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:05:12,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:05:12,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:05:12,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,812 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 281 [2024-12-02 06:05:12,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:05:12,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:05:12,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:05:12,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:05:12,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,846 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]. [2024-12-02 06:05:12,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,860 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:05:12,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:05:12,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:05:12,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:05:12,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (1/1) ... [2024-12-02 06:05:12,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:05:12,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:12,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:05:12,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:05:12,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:05:12,937 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:05:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:05:12,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:05:12,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:05:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:05:13,020 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:05:13,022 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:05:13,544 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-12-02 06:05:13,545 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:05:13,555 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:05:13,556 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 06:05:13,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:05:13 BoogieIcfgContainer [2024-12-02 06:05:13,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:05:13,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:05:13,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:05:13,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:05:13,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:05:12" (1/3) ... [2024-12-02 06:05:13,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a09c002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:05:13, skipping insertion in model container [2024-12-02 06:05:13,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:05:12" (2/3) ... [2024-12-02 06:05:13,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a09c002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:05:13, skipping insertion in model container [2024-12-02 06:05:13,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:05:13" (3/3) ... [2024-12-02 06:05:13,565 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-14.i [2024-12-02 06:05:13,580 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:05:13,583 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-14.i that has 2 procedures, 116 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:05:13,641 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:05:13,654 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;@6208d0d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:05:13,655 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:05:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 83 states have internal predecessors, (120), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 06:05:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 06:05:13,675 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:13,676 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:13,676 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:13,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:13,682 INFO L85 PathProgramCache]: Analyzing trace with hash 482818971, now seen corresponding path program 1 times [2024-12-02 06:05:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:13,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679121597] [2024-12-02 06:05:13,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:13,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-12-02 06:05:14,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:14,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679121597] [2024-12-02 06:05:14,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679121597] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:05:14,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169797356] [2024-12-02 06:05:14,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:14,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:05:14,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:05:14,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:05:14,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:05:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:14,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:05:14,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:05:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-12-02 06:05:14,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:05:14,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169797356] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:14,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:05:14,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 06:05:14,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421253502] [2024-12-02 06:05:14,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:14,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:05:14,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:14,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:05:14,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:05:14,280 INFO L87 Difference]: Start difference. First operand has 116 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 83 states have internal predecessors, (120), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:05:14,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:14,311 INFO L93 Difference]: Finished difference Result 228 states and 390 transitions. [2024-12-02 06:05:14,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:05:14,313 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 203 [2024-12-02 06:05:14,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:14,319 INFO L225 Difference]: With dead ends: 228 [2024-12-02 06:05:14,319 INFO L226 Difference]: Without dead ends: 111 [2024-12-02 06:05:14,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:05:14,325 INFO L435 NwaCegarLoop]: 176 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, 176 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 [2024-12-02 06:05:14,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-02 06:05:14,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-12-02 06:05:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 06:05:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 172 transitions. [2024-12-02 06:05:14,363 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 172 transitions. Word has length 203 [2024-12-02 06:05:14,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:14,363 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 172 transitions. [2024-12-02 06:05:14,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:05:14,364 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 172 transitions. [2024-12-02 06:05:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-12-02 06:05:14,366 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:14,367 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:14,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:05:14,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 06:05:14,567 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:14,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1517381213, now seen corresponding path program 1 times [2024-12-02 06:05:14,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:14,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313343420] [2024-12-02 06:05:14,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:14,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:05:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:15,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313343420] [2024-12-02 06:05:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313343420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:15,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:15,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:05:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162112837] [2024-12-02 06:05:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:15,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:05:15,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:15,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:05:15,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:05:15,041 INFO L87 Difference]: Start difference. First operand 111 states and 172 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:05:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:15,093 INFO L93 Difference]: Finished difference Result 220 states and 343 transitions. [2024-12-02 06:05:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:15,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-12-02 06:05:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:15,097 INFO L225 Difference]: With dead ends: 220 [2024-12-02 06:05:15,097 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 06:05:15,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:05:15,099 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 4 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:15,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 498 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:05:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 06:05:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-02 06:05:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 79 states have internal predecessors, (111), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 06:05:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 173 transitions. [2024-12-02 06:05:15,116 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 173 transitions. Word has length 203 [2024-12-02 06:05:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:15,118 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 173 transitions. [2024-12-02 06:05:15,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:05:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 173 transitions. [2024-12-02 06:05:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 06:05:15,122 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:15,122 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:15,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:05:15,122 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:15,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash 10342152, now seen corresponding path program 1 times [2024-12-02 06:05:15,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:15,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611550908] [2024-12-02 06:05:15,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:05:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611550908] [2024-12-02 06:05:16,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611550908] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:16,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:16,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:05:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219874089] [2024-12-02 06:05:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:16,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:05:16,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:16,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:05:16,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:05:16,795 INFO L87 Difference]: Start difference. First operand 112 states and 173 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:05:17,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:17,060 INFO L93 Difference]: Finished difference Result 231 states and 354 transitions. [2024-12-02 06:05:17,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:05:17,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 204 [2024-12-02 06:05:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:17,063 INFO L225 Difference]: With dead ends: 231 [2024-12-02 06:05:17,063 INFO L226 Difference]: Without dead ends: 122 [2024-12-02 06:05:17,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:05:17,065 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 137 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:17,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 349 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:05:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-02 06:05:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-12-02 06:05:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 85 states have (on average 1.3647058823529412) internal successors, (116), 86 states have internal predecessors, (116), 33 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 06:05:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 182 transitions. [2024-12-02 06:05:17,081 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 182 transitions. Word has length 204 [2024-12-02 06:05:17,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:17,082 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 182 transitions. [2024-12-02 06:05:17,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:05:17,083 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 182 transitions. [2024-12-02 06:05:17,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 06:05:17,085 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:17,085 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:17,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:05:17,086 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:17,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:17,086 INFO L85 PathProgramCache]: Analyzing trace with hash -202521149, now seen corresponding path program 1 times [2024-12-02 06:05:17,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:17,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203048739] [2024-12-02 06:05:17,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:17,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:06:16,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:16,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203048739] [2024-12-02 06:06:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203048739] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:06:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974497753] [2024-12-02 06:06:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:16,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:06:16,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:16,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:06:16,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:06:16,838 INFO L87 Difference]: Start difference. First operand 121 states and 182 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:06:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:39,909 INFO L93 Difference]: Finished difference Result 585 states and 869 transitions. [2024-12-02 06:06:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:06:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 06:06:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:39,916 INFO L225 Difference]: With dead ends: 585 [2024-12-02 06:06:39,916 INFO L226 Difference]: Without dead ends: 472 [2024-12-02 06:06:39,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:06:39,918 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 960 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:39,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1022 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1816 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-12-02 06:06:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-12-02 06:06:39,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 335. [2024-12-02 06:06:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 251 states have (on average 1.406374501992032) internal successors, (353), 253 states have internal predecessors, (353), 77 states have call successors, (77), 6 states have call predecessors, (77), 6 states have return successors, (77), 75 states have call predecessors, (77), 77 states have call successors, (77) [2024-12-02 06:06:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 507 transitions. [2024-12-02 06:06:39,967 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 507 transitions. Word has length 206 [2024-12-02 06:06:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:39,968 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 507 transitions. [2024-12-02 06:06:39,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:06:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 507 transitions. [2024-12-02 06:06:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 06:06:39,971 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:39,971 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:39,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:06:39,972 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:39,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash -903585727, now seen corresponding path program 1 times [2024-12-02 06:06:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709192185] [2024-12-02 06:06:39,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:07:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709192185] [2024-12-02 06:07:37,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709192185] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:37,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:37,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:07:37,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800351711] [2024-12-02 06:07:37,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:37,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:07:37,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:37,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:07:37,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:07:37,381 INFO L87 Difference]: Start difference. First operand 335 states and 507 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:07:57,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:57,157 INFO L93 Difference]: Finished difference Result 802 states and 1197 transitions. [2024-12-02 06:07:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:07:57,158 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 206 [2024-12-02 06:07:57,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:57,161 INFO L225 Difference]: With dead ends: 802 [2024-12-02 06:07:57,162 INFO L226 Difference]: Without dead ends: 475 [2024-12-02 06:07:57,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:07:57,163 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 828 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:57,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1400 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2024-12-02 06:07:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-12-02 06:07:57,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 335. [2024-12-02 06:07:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 251 states have (on average 1.3904382470119523) internal successors, (349), 253 states have internal predecessors, (349), 77 states have call successors, (77), 6 states have call predecessors, (77), 6 states have return successors, (77), 75 states have call predecessors, (77), 77 states have call successors, (77) [2024-12-02 06:07:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 503 transitions. [2024-12-02 06:07:57,200 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 503 transitions. Word has length 206 [2024-12-02 06:07:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:57,200 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 503 transitions. [2024-12-02 06:07:57,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:07:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 503 transitions. [2024-12-02 06:07:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 06:07:57,203 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:57,203 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:57,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:07:57,204 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:57,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:57,204 INFO L85 PathProgramCache]: Analyzing trace with hash -2125749183, now seen corresponding path program 1 times [2024-12-02 06:07:57,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:57,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890372969] [2024-12-02 06:07:57,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:09:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:09:00,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:09:00,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890372969] [2024-12-02 06:09:00,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890372969] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:09:00,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:09:00,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 06:09:00,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987982940] [2024-12-02 06:09:00,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:09:00,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:09:00,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:09:00,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:09:00,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:09:00,656 INFO L87 Difference]: Start difference. First operand 335 states and 503 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:09:12,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:09:12,658 INFO L93 Difference]: Finished difference Result 814 states and 1199 transitions. [2024-12-02 06:09:12,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:09:12,658 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 06:09:12,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:09:12,662 INFO L225 Difference]: With dead ends: 814 [2024-12-02 06:09:12,662 INFO L226 Difference]: Without dead ends: 701 [2024-12-02 06:09:12,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:09:12,664 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 648 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:09:12,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1090 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 06:09:12,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-12-02 06:09:12,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 438. [2024-12-02 06:09:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.407079646017699) internal successors, (477), 342 states have internal predecessors, (477), 90 states have call successors, (90), 8 states have call predecessors, (90), 8 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 06:09:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 657 transitions. [2024-12-02 06:09:12,693 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 657 transitions. Word has length 206 [2024-12-02 06:09:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:09:12,693 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 657 transitions. [2024-12-02 06:09:12,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:09:12,694 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 657 transitions. [2024-12-02 06:09:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 06:09:12,695 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:09:12,695 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:09:12,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:09:12,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:09:12,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:09:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1468153535, now seen corresponding path program 1 times [2024-12-02 06:09:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:09:12,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772889037] [2024-12-02 06:09:12,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:09:12,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:09:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:10:12,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772889037] [2024-12-02 06:10:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772889037] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 06:10:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253979840] [2024-12-02 06:10:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:12,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:10:12,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:12,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:10:12,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:10:12,413 INFO L87 Difference]: Start difference. First operand 438 states and 657 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:10:21,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-12-02 06:10:31,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:32,000 INFO L93 Difference]: Finished difference Result 920 states and 1356 transitions. [2024-12-02 06:10:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:10:32,001 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 06:10:32,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:32,005 INFO L225 Difference]: With dead ends: 920 [2024-12-02 06:10:32,005 INFO L226 Difference]: Without dead ends: 704 [2024-12-02 06:10:32,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:10:32,007 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 569 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:32,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 1175 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1299 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2024-12-02 06:10:32,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2024-12-02 06:10:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 438. [2024-12-02 06:10:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.407079646017699) internal successors, (477), 342 states have internal predecessors, (477), 90 states have call successors, (90), 8 states have call predecessors, (90), 8 states have return successors, (90), 87 states have call predecessors, (90), 90 states have call successors, (90) [2024-12-02 06:10:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 657 transitions. [2024-12-02 06:10:32,049 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 657 transitions. Word has length 206 [2024-12-02 06:10:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:32,049 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 657 transitions. [2024-12-02 06:10:32,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:10:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 657 transitions. [2024-12-02 06:10:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2024-12-02 06:10:32,051 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:32,051 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:10:32,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:10:32,052 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:32,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -711994239, now seen corresponding path program 1 times [2024-12-02 06:10:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042778510] [2024-12-02 06:10:32,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:32,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:10:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:32,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042778510] [2024-12-02 06:10:32,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042778510] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:32,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:32,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:10:32,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528722651] [2024-12-02 06:10:32,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:32,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:10:32,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:32,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:10:32,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:10:32,178 INFO L87 Difference]: Start difference. First operand 438 states and 657 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:10:32,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:32,315 INFO L93 Difference]: Finished difference Result 1092 states and 1645 transitions. [2024-12-02 06:10:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:10:32,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 206 [2024-12-02 06:10:32,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:32,320 INFO L225 Difference]: With dead ends: 1092 [2024-12-02 06:10:32,320 INFO L226 Difference]: Without dead ends: 662 [2024-12-02 06:10:32,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:10:32,323 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 108 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:32,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 597 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:10:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-12-02 06:10:32,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 660. [2024-12-02 06:10:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 495 states have (on average 1.391919191919192) internal successors, (689), 498 states have internal predecessors, (689), 152 states have call successors, (152), 12 states have call predecessors, (152), 12 states have return successors, (152), 149 states have call predecessors, (152), 152 states have call successors, (152) [2024-12-02 06:10:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 993 transitions. [2024-12-02 06:10:32,387 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 993 transitions. Word has length 206 [2024-12-02 06:10:32,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:32,387 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 993 transitions. [2024-12-02 06:10:32,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:10:32,388 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 993 transitions. [2024-12-02 06:10:32,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 06:10:32,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:32,390 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:10:32,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:10:32,390 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:32,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash 902675171, now seen corresponding path program 1 times [2024-12-02 06:10:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:32,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095197172] [2024-12-02 06:10:32,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:32,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:11:44,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:11:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:11:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095197172] [2024-12-02 06:11:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095197172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:11:44,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:11:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:11:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216448259] [2024-12-02 06:11:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:11:44,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:11:44,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:11:44,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:11:44,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:11:44,706 INFO L87 Difference]: Start difference. First operand 660 states and 993 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:12:08,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:12:08,496 INFO L93 Difference]: Finished difference Result 1996 states and 2989 transitions. [2024-12-02 06:12:08,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:12:08,496 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 207 [2024-12-02 06:12:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:12:08,501 INFO L225 Difference]: With dead ends: 1996 [2024-12-02 06:12:08,501 INFO L226 Difference]: Without dead ends: 1566 [2024-12-02 06:12:08,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=311, Invalid=681, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:12:08,503 INFO L435 NwaCegarLoop]: 185 mSDtfsCounter, 853 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:12:08,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1155 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2024-12-02 06:12:08,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-12-02 06:12:08,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1372. [2024-12-02 06:12:08,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1045 states have (on average 1.400956937799043) internal successors, (1464), 1050 states have internal predecessors, (1464), 302 states have call successors, (302), 24 states have call predecessors, (302), 24 states have return successors, (302), 297 states have call predecessors, (302), 302 states have call successors, (302) [2024-12-02 06:12:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2068 transitions. [2024-12-02 06:12:08,629 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2068 transitions. Word has length 207 [2024-12-02 06:12:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:12:08,630 INFO L471 AbstractCegarLoop]: Abstraction has 1372 states and 2068 transitions. [2024-12-02 06:12:08,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 2 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:12:08,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2068 transitions. [2024-12-02 06:12:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-12-02 06:12:08,632 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:12:08,632 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:12:08,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:12:08,632 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:12:08,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:12:08,633 INFO L85 PathProgramCache]: Analyzing trace with hash 14226798, now seen corresponding path program 1 times [2024-12-02 06:12:08,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:12:08,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764484514] [2024-12-02 06:12:08,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:12:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:12:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:16,913 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 06:13:16,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-12-02 06:13:16,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:13:16,914 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 57 more [2024-12-02 06:13:16,919 INFO L158 Benchmark]: Toolchain (without parser) took 484476.39ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 116.1MB in the beginning and 447.7MB in the end (delta: -331.6MB). Peak memory consumption was 637.5MB. Max. memory is 16.1GB. [2024-12-02 06:13:16,919 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:13:16,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.35ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 99.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 06:13:16,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.74ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 93.8MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:13:16,920 INFO L158 Benchmark]: Boogie Preprocessor took 71.65ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 87.4MB in the end (delta: 6.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:13:16,920 INFO L158 Benchmark]: RCFGBuilder took 671.10ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 109.0MB in the end (delta: -21.6MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2024-12-02 06:13:16,920 INFO L158 Benchmark]: TraceAbstraction took 483360.16ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 108.4MB in the beginning and 447.7MB in the end (delta: -339.3MB). Peak memory consumption was 630.9MB. Max. memory is 16.1GB. [2024-12-02 06:13:16,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.35ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 99.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.74ms. Allocated memory is still 142.6MB. Free memory was 99.7MB in the beginning and 93.8MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.65ms. Allocated memory is still 142.6MB. Free memory was 93.8MB in the beginning and 87.4MB in the end (delta: 6.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 671.10ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 109.0MB in the end (delta: -21.6MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. * TraceAbstraction took 483360.16ms. Allocated memory was 142.6MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 108.4MB in the beginning and 447.7MB in the end (delta: -339.3MB). Peak memory consumption was 630.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1 --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 8b9b5c3584162f1ac164bc4062f8fb20bbcdce8e443da62cb4410d73442b6f23 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:13:18,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:13:18,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 06:13:18,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:13:18,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:13:18,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:13:18,765 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:13:18,765 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:13:18,766 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:13:18,766 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:13:18,766 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:13:18,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:13:18,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:13:18,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:13:18,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 06:13:18,767 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:13:18,768 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:13:18,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:13:18,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:13:18,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:13:18,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:13:18,769 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8b9b5c3584162f1ac164bc4062f8fb20bbcdce8e443da62cb4410d73442b6f23 [2024-12-02 06:13:18,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:13:19,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:13:19,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:13:19,005 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:13:19,005 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:13:19,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i [2024-12-02 06:13:21,611 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/e8f3827f1/d76cda2041d64ac895db7c836b97bff4/FLAG7776c4d33 [2024-12-02 06:13:21,823 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:13:21,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i [2024-12-02 06:13:21,832 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/e8f3827f1/d76cda2041d64ac895db7c836b97bff4/FLAG7776c4d33 [2024-12-02 06:13:22,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/data/e8f3827f1/d76cda2041d64ac895db7c836b97bff4 [2024-12-02 06:13:22,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:13:22,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:13:22,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:13:22,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:13:22,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:13:22,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273d0c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22, skipping insertion in model container [2024-12-02 06:13:22,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,231 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:13:22,349 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i[916,929] [2024-12-02 06:13:22,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:13:22,429 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:13:22,437 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_3fabe45e-617b-45cd-adcb-3de8f8e28197/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_100-1loop_file-14.i[916,929] [2024-12-02 06:13:22,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:13:22,489 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:13:22,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22 WrapperNode [2024-12-02 06:13:22,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:13:22,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:13:22,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:13:22,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:13:22,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,524 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 209 [2024-12-02 06:13:22,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:13:22,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:13:22,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:13:22,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:13:22,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,546 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]. [2024-12-02 06:13:22,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,557 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:13:22,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:13:22,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:13:22,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:13:22,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (1/1) ... [2024-12-02 06:13:22,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:13:22,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:13:22,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:13:22,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:13:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:13:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 06:13:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:13:22,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:13:22,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:13:22,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:13:22,716 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:13:22,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:13:25,164 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-12-02 06:13:25,164 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:13:25,175 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:13:25,176 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 06:13:25,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:13:25 BoogieIcfgContainer [2024-12-02 06:13:25,176 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:13:25,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:13:25,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:13:25,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:13:25,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:13:22" (1/3) ... [2024-12-02 06:13:25,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244949a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:13:25, skipping insertion in model container [2024-12-02 06:13:25,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:13:22" (2/3) ... [2024-12-02 06:13:25,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244949a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:13:25, skipping insertion in model container [2024-12-02 06:13:25,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:13:25" (3/3) ... [2024-12-02 06:13:25,186 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_100-1loop_file-14.i [2024-12-02 06:13:25,199 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:13:25,201 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_100-1loop_file-14.i that has 2 procedures, 90 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:13:25,253 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:13:25,264 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;@350734fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:13:25,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:13:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 57 states have internal predecessors, (79), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 06:13:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 06:13:25,280 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:13:25,281 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:13:25,281 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:13:25,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:13:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash 164519044, now seen corresponding path program 1 times [2024-12-02 06:13:25,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:13:25,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [861718269] [2024-12-02 06:13:25,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:13:25,298 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 [2024-12-02 06:13:25,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:13:25,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:13:25,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:25,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:13:25,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:13:25,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 06:13:25,861 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:13:25,862 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:13:25,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [861718269] [2024-12-02 06:13:25,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [861718269] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:13:25,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:13:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:13:25,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678962769] [2024-12-02 06:13:25,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:13:25,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:13:25,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:13:25,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:13:25,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:13:25,896 INFO L87 Difference]: Start difference. First operand has 90 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 57 states have internal predecessors, (79), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:13:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:13:25,934 INFO L93 Difference]: Finished difference Result 176 states and 308 transitions. [2024-12-02 06:13:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:13:25,937 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 197 [2024-12-02 06:13:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:13:25,945 INFO L225 Difference]: With dead ends: 176 [2024-12-02 06:13:25,945 INFO L226 Difference]: Without dead ends: 85 [2024-12-02 06:13:25,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:13:25,953 INFO L435 NwaCegarLoop]: 135 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, 135 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 [2024-12-02 06:13:25,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:13:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-02 06:13:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-12-02 06:13:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-12-02 06:13:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2024-12-02 06:13:26,003 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 197 [2024-12-02 06:13:26,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:13:26,004 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2024-12-02 06:13:26,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2024-12-02 06:13:26,004 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2024-12-02 06:13:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 06:13:26,008 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:13:26,008 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:13:26,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:26,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:26,209 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:13:26,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:13:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1307033402, now seen corresponding path program 1 times [2024-12-02 06:13:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:13:26,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702210142] [2024-12-02 06:13:26,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:13:26,212 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 [2024-12-02 06:13:26,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:13:26,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:13:26,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:26,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:13:26,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:13:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:13:28,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:13:28,454 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:13:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702210142] [2024-12-02 06:13:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702210142] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:13:28,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:13:28,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:13:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158824398] [2024-12-02 06:13:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:13:28,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:13:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:13:28,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:13:28,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:13:28,457 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:13:31,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:13:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:13:31,855 INFO L93 Difference]: Finished difference Result 259 states and 398 transitions. [2024-12-02 06:13:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:13:31,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-12-02 06:13:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:13:31,877 INFO L225 Difference]: With dead ends: 259 [2024-12-02 06:13:31,877 INFO L226 Difference]: Without dead ends: 177 [2024-12-02 06:13:31,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:13:31,879 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 108 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:13:31,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 363 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 06:13:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-12-02 06:13:31,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2024-12-02 06:13:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 100 states have (on average 1.33) internal successors, (133), 100 states have internal predecessors, (133), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-12-02 06:13:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 257 transitions. [2024-12-02 06:13:31,907 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 257 transitions. Word has length 197 [2024-12-02 06:13:31,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:13:31,908 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 257 transitions. [2024-12-02 06:13:31,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:13:31,908 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 257 transitions. [2024-12-02 06:13:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 06:13:31,911 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:13:31,912 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:13:31,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0 [2024-12-02 06:13:32,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:32,113 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:13:32,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:13:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1298990152, now seen corresponding path program 1 times [2024-12-02 06:13:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:13:32,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142404304] [2024-12-02 06:13:32,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:13:32,114 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 [2024-12-02 06:13:32,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:13:32,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:13:32,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:32,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 06:13:32,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:13:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-12-02 06:13:33,227 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:13:33,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:13:33,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142404304] [2024-12-02 06:13:33,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142404304] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:13:33,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:13:33,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:13:33,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450974864] [2024-12-02 06:13:33,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:13:33,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:13:33,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:13:33,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:13:33,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:13:33,230 INFO L87 Difference]: Start difference. First operand 165 states and 257 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:13:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:13:35,024 INFO L93 Difference]: Finished difference Result 409 states and 639 transitions. [2024-12-02 06:13:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:13:35,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 197 [2024-12-02 06:13:35,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:13:35,028 INFO L225 Difference]: With dead ends: 409 [2024-12-02 06:13:35,028 INFO L226 Difference]: Without dead ends: 247 [2024-12-02 06:13:35,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:13:35,029 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 35 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:13:35,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 361 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 06:13:35,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-12-02 06:13:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 245. [2024-12-02 06:13:35,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 148 states have (on average 1.3243243243243243) internal successors, (196), 148 states have internal predecessors, (196), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-12-02 06:13:35,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 382 transitions. [2024-12-02 06:13:35,084 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 382 transitions. Word has length 197 [2024-12-02 06:13:35,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:13:35,085 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 382 transitions. [2024-12-02 06:13:35,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-12-02 06:13:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 382 transitions. [2024-12-02 06:13:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 06:13:35,088 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:13:35,089 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:13:35,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:35,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:35,289 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:13:35,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:13:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash 562411971, now seen corresponding path program 1 times [2024-12-02 06:13:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:13:35,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700760599] [2024-12-02 06:13:35,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:13:35,291 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 [2024-12-02 06:13:35,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:13:35,292 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:13:35,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fabe45e-617b-45cd-adcb-3de8f8e28197/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:13:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:36,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-12-02 06:13:36,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:14:18,989 WARN L286 SmtUtils]: Spent 5.60s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:14:36,481 WARN L286 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 85 DAG size of output: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:14:55,804 WARN L286 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 87 DAG size of output: 86 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:15:17,509 WARN L286 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 89 DAG size of output: 88 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:16:02,250 WARN L286 SmtUtils]: Spent 8.79s on a formula simplification. DAG size of input: 94 DAG size of output: 93 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:16:31,980 WARN L286 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:17:16,580 WARN L286 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 99 DAG size of output: 100 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:18:55,249 WARN L286 SmtUtils]: Spent 32.28s on a formula simplification. DAG size of input: 103 DAG size of output: 102 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)