./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-80.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC --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 f4ab57f7e2128c7453b65f19e94282d169dfca427d7d7188c760e7a4e8739cbc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:54:44,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:54:44,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:54:44,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:54:44,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:54:44,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:54:44,737 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:54:44,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:54:44,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:54:44,738 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:54:44,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:54:44,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:54:44,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:54:44,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:54:44,741 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:54:44,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:54:44,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:54:44,741 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:54:44,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:54:44,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:54:44,742 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:54:44,743 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:54:44,744 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:54:44,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:54:44,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:54:44,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:54:44,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:54:44,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:54:44,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:54:44,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:54:44,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:54:44,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:54:44,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:54:44,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:54:44,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:54:44,747 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_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC 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 -> f4ab57f7e2128c7453b65f19e94282d169dfca427d7d7188c760e7a4e8739cbc [2024-11-24 00:54:45,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:54:45,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:54:45,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:54:45,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:54:45,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:54:45,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-80.i [2024-11-24 00:54:48,316 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/data/af1a33717/23897b1dac564e7d88e3e0132c2599a7/FLAG3505477a1 [2024-11-24 00:54:48,626 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:54:48,626 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-80.i [2024-11-24 00:54:48,641 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/data/af1a33717/23897b1dac564e7d88e3e0132c2599a7/FLAG3505477a1 [2024-11-24 00:54:48,668 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/data/af1a33717/23897b1dac564e7d88e3e0132c2599a7 [2024-11-24 00:54:48,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:54:48,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:54:48,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:54:48,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:54:48,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:54:48,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:54:48" (1/1) ... [2024-11-24 00:54:48,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f79beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:48, skipping insertion in model container [2024-11-24 00:54:48,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:54:48" (1/1) ... [2024-11-24 00:54:48,719 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:54:48,892 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_4dadbf83-f403-4e3e-8e89-2aa012ea5120/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-80.i[917,930] [2024-11-24 00:54:49,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:54:49,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:54:49,067 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_4dadbf83-f403-4e3e-8e89-2aa012ea5120/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-80.i[917,930] [2024-11-24 00:54:49,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:54:49,164 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:54:49,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49 WrapperNode [2024-11-24 00:54:49,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:54:49,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:54:49,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:54:49,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:54:49,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,267 INFO L138 Inliner]: procedures = 30, calls = 228, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 780 [2024-11-24 00:54:49,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:54:49,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:54:49,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:54:49,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:54:49,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,298 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,312 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-24 00:54:49,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,335 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:54:49,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:54:49,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:54:49,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:54:49,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (1/1) ... [2024-11-24 00:54:49,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:54:49,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:49,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:54:49,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:54:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:54:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-24 00:54:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:54:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-24 00:54:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:54:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:54:49,716 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:54:49,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:54:50,961 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2024-11-24 00:54:50,961 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:54:50,973 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:54:50,973 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:54:50,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:54:50 BoogieIcfgContainer [2024-11-24 00:54:50,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:54:50,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:54:50,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:54:50,981 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:54:50,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:54:48" (1/3) ... [2024-11-24 00:54:50,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4beec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:54:50, skipping insertion in model container [2024-11-24 00:54:50,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:54:49" (2/3) ... [2024-11-24 00:54:50,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4beec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:54:50, skipping insertion in model container [2024-11-24 00:54:50,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:54:50" (3/3) ... [2024-11-24 00:54:50,983 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-80.i [2024-11-24 00:54:50,998 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:54:51,000 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-sp_file-80.i that has 2 procedures, 154 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:54:51,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:54:51,082 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;@76cd64be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:54:51,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:54:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:54:51,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:51,106 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:51,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:51,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:51,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1448501280, now seen corresponding path program 1 times [2024-11-24 00:54:51,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:51,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213542772] [2024-11-24 00:54:51,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:51,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-24 00:54:51,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:51,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213542772] [2024-11-24 00:54:51,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213542772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550410862] [2024-11-24 00:54:51,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:51,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:51,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:51,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:51,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:54:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:52,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:54:52,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-24 00:54:52,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:52,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550410862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:52,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:52,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:54:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640215576] [2024-11-24 00:54:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:52,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:54:52,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:52,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:54:52,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:54:52,485 INFO L87 Difference]: Start difference. First operand has 154 states, 134 states have (on average 1.455223880597015) internal successors, (195), 135 states have internal predecessors, (195), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:54:52,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:52,542 INFO L93 Difference]: Finished difference Result 301 states and 469 transitions. [2024-11-24 00:54:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:54:52,547 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2024-11-24 00:54:52,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:52,557 INFO L225 Difference]: With dead ends: 301 [2024-11-24 00:54:52,557 INFO L226 Difference]: Without dead ends: 150 [2024-11-24 00:54:52,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:54:52,569 INFO L435 NwaCegarLoop]: 222 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, 222 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:52,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-24 00:54:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-24 00:54:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2024-11-24 00:54:52,655 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2024-11-24 00:54:52,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:52,655 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2024-11-24 00:54:52,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:54:52,656 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2024-11-24 00:54:52,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:54:52,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:52,669 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:52,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:52,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:54:52,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:52,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1664099722, now seen corresponding path program 1 times [2024-11-24 00:54:52,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99109436] [2024-11-24 00:54:52,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:53,605 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-24 00:54:53,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:53,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99109436] [2024-11-24 00:54:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99109436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:53,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:53,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:54:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341860583] [2024-11-24 00:54:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:53,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:53,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:53,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:53,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:54:53,609 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:54:53,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:53,701 INFO L93 Difference]: Finished difference Result 299 states and 444 transitions. [2024-11-24 00:54:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:53,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2024-11-24 00:54:53,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:53,704 INFO L225 Difference]: With dead ends: 299 [2024-11-24 00:54:53,708 INFO L226 Difference]: Without dead ends: 152 [2024-11-24 00:54:53,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:54:53,710 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:53,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-24 00:54:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-11-24 00:54:53,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2024-11-24 00:54:53,742 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2024-11-24 00:54:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:53,743 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2024-11-24 00:54:53,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-24 00:54:53,744 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2024-11-24 00:54:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:54:53,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:53,750 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:53,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:54:53,750 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:53,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -719825016, now seen corresponding path program 1 times [2024-11-24 00:54:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353563750] [2024-11-24 00:54:53,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-24 00:54:54,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:54,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353563750] [2024-11-24 00:54:54,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353563750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:54,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883344967] [2024-11-24 00:54:54,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:54,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:54,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:54,469 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:54,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:54:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:54,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:54:54,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-24 00:54:55,025 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883344967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:55,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 00:54:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293304576] [2024-11-24 00:54:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:55,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:55,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:55,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:55,030 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:55,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:55,088 INFO L93 Difference]: Finished difference Result 304 states and 449 transitions. [2024-11-24 00:54:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:55,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-11-24 00:54:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:55,091 INFO L225 Difference]: With dead ends: 304 [2024-11-24 00:54:55,091 INFO L226 Difference]: Without dead ends: 155 [2024-11-24 00:54:55,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:55,093 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:55,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-24 00:54:55,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-11-24 00:54:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:55,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2024-11-24 00:54:55,106 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2024-11-24 00:54:55,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:55,106 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2024-11-24 00:54:55,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:55,107 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2024-11-24 00:54:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:54:55,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:55,110 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:55,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:55,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:55,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:55,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1055182346, now seen corresponding path program 1 times [2024-11-24 00:54:55,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221826749] [2024-11-24 00:54:55,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-24 00:54:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:55,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221826749] [2024-11-24 00:54:55,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221826749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141177101] [2024-11-24 00:54:55,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:55,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:55,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:55,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:54:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:56,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:54:56,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-24 00:54:56,418 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141177101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:56,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-24 00:54:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929930886] [2024-11-24 00:54:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:56,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:56,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:56,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:56,423 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:56,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:56,468 INFO L93 Difference]: Finished difference Result 308 states and 453 transitions. [2024-11-24 00:54:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-11-24 00:54:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:56,474 INFO L225 Difference]: With dead ends: 308 [2024-11-24 00:54:56,474 INFO L226 Difference]: Without dead ends: 157 [2024-11-24 00:54:56,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:54:56,476 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 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 [2024-11-24 00:54:56,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-24 00:54:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2024-11-24 00:54:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2024-11-24 00:54:56,503 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2024-11-24 00:54:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:56,504 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2024-11-24 00:54:56,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:56,505 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2024-11-24 00:54:56,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:54:56,507 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:56,507 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:56,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:54:56,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:56,708 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:56,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:56,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1057029388, now seen corresponding path program 1 times [2024-11-24 00:54:56,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:56,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128317298] [2024-11-24 00:54:56,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:57,184 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-24 00:54:57,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128317298] [2024-11-24 00:54:57,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128317298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:57,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328710290] [2024-11-24 00:54:57,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:57,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:57,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:57,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:54:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:57,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:54:57,671 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-24 00:54:57,717 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:57,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328710290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:57,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:57,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-24 00:54:57,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082312196] [2024-11-24 00:54:57,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:57,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:54:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:57,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:54:57,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:57,720 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:57,768 INFO L93 Difference]: Finished difference Result 311 states and 456 transitions. [2024-11-24 00:54:57,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:54:57,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2024-11-24 00:54:57,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:57,771 INFO L225 Difference]: With dead ends: 311 [2024-11-24 00:54:57,771 INFO L226 Difference]: Without dead ends: 158 [2024-11-24 00:54:57,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:54:57,775 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:57,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:54:57,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-24 00:54:57,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2024-11-24 00:54:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2024-11-24 00:54:57,797 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2024-11-24 00:54:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:57,797 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2024-11-24 00:54:57,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2024-11-24 00:54:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:54:57,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:57,800 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:57,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:58,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dadbf83-f403-4e3e-8e89-2aa012ea5120/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:58,001 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:58,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1686736903, now seen corresponding path program 1 times [2024-11-24 00:54:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:58,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382619624] [2024-11-24 00:54:58,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-24 00:54:59,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:59,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382619624] [2024-11-24 00:54:59,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382619624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:54:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115513227] [2024-11-24 00:54:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:59,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:54:59,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:59,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:54:59,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:54:59,431 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:59,793 INFO L93 Difference]: Finished difference Result 317 states and 464 transitions. [2024-11-24 00:54:59,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:54:59,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2024-11-24 00:54:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:59,796 INFO L225 Difference]: With dead ends: 317 [2024-11-24 00:54:59,797 INFO L226 Difference]: Without dead ends: 162 [2024-11-24 00:54:59,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:54:59,801 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 2 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:59,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 814 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:54:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-24 00:54:59,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2024-11-24 00:54:59,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.408450704225352) internal successors, (200), 142 states have internal predecessors, (200), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:54:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2024-11-24 00:54:59,814 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 155 [2024-11-24 00:54:59,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:59,814 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2024-11-24 00:54:59,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:54:59,815 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2024-11-24 00:54:59,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:54:59,817 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:59,817 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:59,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:54:59,818 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:59,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash -118701431, now seen corresponding path program 1 times [2024-11-24 00:54:59,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:59,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568353810] [2024-11-24 00:54:59,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:59,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-24 00:55:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:03,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568353810] [2024-11-24 00:55:03,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568353810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:03,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:03,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:03,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162460660] [2024-11-24 00:55:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:03,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:03,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:03,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:03,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:03,335 INFO L87 Difference]: Start difference. First operand 161 states and 234 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:55:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:04,261 INFO L93 Difference]: Finished difference Result 377 states and 547 transitions. [2024-11-24 00:55:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:55:04,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2024-11-24 00:55:04,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:04,264 INFO L225 Difference]: With dead ends: 377 [2024-11-24 00:55:04,264 INFO L226 Difference]: Without dead ends: 219 [2024-11-24 00:55:04,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:55:04,266 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 72 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:04,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 894 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:55:04,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-24 00:55:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 166. [2024-11-24 00:55:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 147 states have (on average 1.4081632653061225) internal successors, (207), 147 states have internal predecessors, (207), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-24 00:55:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 241 transitions. [2024-11-24 00:55:04,278 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 241 transitions. Word has length 155 [2024-11-24 00:55:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:04,279 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 241 transitions. [2024-11-24 00:55:04,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-24 00:55:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 241 transitions. [2024-11-24 00:55:04,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:55:04,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:04,282 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:04,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:55:04,282 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:04,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2112846137, now seen corresponding path program 1 times [2024-11-24 00:55:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482423930] [2024-11-24 00:55:04,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:04,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat