./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-10.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_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1825bc9a0285763e27450cd61a02fb9d706f8ecf9bea3df3659a486d8c0885be --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:40:36,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:40:36,868 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:40:36,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:40:36,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:40:36,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:40:36,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:40:36,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:40:36,920 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:40:36,921 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:40:36,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:40:36,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:40:36,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:40:36,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:40:36,923 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:40:36,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:40:36,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:40:36,924 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:40:36,924 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:40:36,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:36,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:36,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:36,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:36,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:40:36,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:36,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:36,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:40:36,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:40:36,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:40:36,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:40:36,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:40:36,928 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_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1825bc9a0285763e27450cd61a02fb9d706f8ecf9bea3df3659a486d8c0885be [2024-11-28 02:40:37,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:40:37,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:40:37,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:40:37,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:40:37,284 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:40:37,285 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-10.i [2024-11-28 02:40:40,340 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/data/89db24503/851ebe6d00cd497ea1fbc6b083f60116/FLAGb5dcb8a8d [2024-11-28 02:40:40,642 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:40,644 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-10.i [2024-11-28 02:40:40,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/data/89db24503/851ebe6d00cd497ea1fbc6b083f60116/FLAGb5dcb8a8d [2024-11-28 02:40:40,691 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/data/89db24503/851ebe6d00cd497ea1fbc6b083f60116 [2024-11-28 02:40:40,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:40,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:40,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:40,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:40,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:40,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:40" (1/1) ... [2024-11-28 02:40:40,708 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7032f788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:40, skipping insertion in model container [2024-11-28 02:40:40,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:40" (1/1) ... [2024-11-28 02:40:40,742 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:40,933 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_1df565d0-9a89-4419-a656-ca258c3b2587/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-10.i[917,930] [2024-11-28 02:40:41,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:41,075 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:40:41,092 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_1df565d0-9a89-4419-a656-ca258c3b2587/sv-benchmarks/c/hardness-nfm22/hardness_codestructure_steplocals_file-10.i[917,930] [2024-11-28 02:40:41,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:41,162 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:40:41,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41 WrapperNode [2024-11-28 02:40:41,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:41,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:41,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:40:41,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:40:41,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,265 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 181 [2024-11-28 02:40:41,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:41,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:40:41,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:40:41,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:40:41,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,327 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:40:41,329 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,330 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,345 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:40:41,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:40:41,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:40:41,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:40:41,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (1/1) ... [2024-11-28 02:40:41,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:41,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:41,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:40:41,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:40:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:40:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:40:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:40:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:40:41,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:40:41,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:40:41,574 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:40:41,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:40:42,138 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-28 02:40:42,139 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:40:42,157 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:40:42,157 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:40:42,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:42 BoogieIcfgContainer [2024-11-28 02:40:42,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:40:42,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:40:42,163 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:40:42,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:40:42,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:40" (1/3) ... [2024-11-28 02:40:42,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6f563a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:42, skipping insertion in model container [2024-11-28 02:40:42,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:41" (2/3) ... [2024-11-28 02:40:42,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d6f563a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:42, skipping insertion in model container [2024-11-28 02:40:42,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:42" (3/3) ... [2024-11-28 02:40:42,173 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-10.i [2024-11-28 02:40:42,193 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:40:42,195 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_codestructure_steplocals_file-10.i that has 2 procedures, 82 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:40:42,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:40:42,319 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;@492ad458, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:40:42,319 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:40:42,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:40:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 02:40:42,340 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:42,341 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:42,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:42,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1920597026, now seen corresponding path program 1 times [2024-11-28 02:40:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:42,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722452991] [2024-11-28 02:40:42,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:42,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:42,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-28 02:40:42,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:42,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722452991] [2024-11-28 02:40:42,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722452991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:42,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134827554] [2024-11-28 02:40:42,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:42,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:42,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:42,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:42,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:40:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:42,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:40:42,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-28 02:40:43,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134827554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:40:43,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:40:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155039780] [2024-11-28 02:40:43,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:43,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:40:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:43,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:40:43,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:40:43,066 INFO L87 Difference]: Start difference. First operand has 82 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 02:40:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:43,100 INFO L93 Difference]: Finished difference Result 157 states and 266 transitions. [2024-11-28 02:40:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:40:43,105 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 154 [2024-11-28 02:40:43,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:43,113 INFO L225 Difference]: With dead ends: 157 [2024-11-28 02:40:43,113 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 02:40:43,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:40:43,120 INFO L435 NwaCegarLoop]: 117 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, 117 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 [2024-11-28 02:40:43,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 02:40:43,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-28 02:40:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:40:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 117 transitions. [2024-11-28 02:40:43,166 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 117 transitions. Word has length 154 [2024-11-28 02:40:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:43,168 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 117 transitions. [2024-11-28 02:40:43,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 02:40:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 117 transitions. [2024-11-28 02:40:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 02:40:43,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:43,174 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:43,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:43,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df565d0-9a89-4419-a656-ca258c3b2587/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:40:43,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:40:43,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:43,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1221571550, now seen corresponding path program 1 times [2024-11-28 02:40:43,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:43,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001560256] [2024-11-28 02:40:43,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:43,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:43:20,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:43:20,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001560256] [2024-11-28 02:43:20,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001560256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:43:20,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:43:20,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:43:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237132654] [2024-11-28 02:43:20,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:43:20,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:43:20,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:43:20,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:43:20,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:43:20,409 INFO L87 Difference]: Start difference. First operand 78 states and 117 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:43:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:22,376 INFO L93 Difference]: Finished difference Result 216 states and 320 transitions. [2024-11-28 02:43:22,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:43:22,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 154 [2024-11-28 02:43:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:22,382 INFO L225 Difference]: With dead ends: 216 [2024-11-28 02:43:22,382 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 02:43:22,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:43:22,387 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 128 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:22,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 373 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:43:22,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 02:43:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 108. [2024-11-28 02:43:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:43:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 162 transitions. [2024-11-28 02:43:22,423 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 162 transitions. Word has length 154 [2024-11-28 02:43:22,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:22,428 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 162 transitions. [2024-11-28 02:43:22,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:43:22,429 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 162 transitions. [2024-11-28 02:43:22,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:43:22,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:22,433 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:43:22,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:43:22,437 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:43:22,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:22,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1354944232, now seen corresponding path program 1 times [2024-11-28 02:43:22,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:43:22,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565173808] [2024-11-28 02:43:22,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:22,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:43:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:45:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:45:28,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:45:28,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565173808] [2024-11-28 02:45:28,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565173808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:45:28,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:45:28,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:45:28,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468922680] [2024-11-28 02:45:28,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:45:28,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:45:28,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:45:28,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:45:28,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:45:28,097 INFO L87 Difference]: Start difference. First operand 108 states and 162 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:45:32,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:45:32,459 INFO L93 Difference]: Finished difference Result 261 states and 385 transitions. [2024-11-28 02:45:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:45:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 155 [2024-11-28 02:45:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:45:32,462 INFO L225 Difference]: With dead ends: 261 [2024-11-28 02:45:32,463 INFO L226 Difference]: Without dead ends: 156 [2024-11-28 02:45:32,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:45:32,465 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 103 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:45:32,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 611 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:45:32,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-28 02:45:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 108. [2024-11-28 02:45:32,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:45:32,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 162 transitions. [2024-11-28 02:45:32,481 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 162 transitions. Word has length 155 [2024-11-28 02:45:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:45:32,482 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 162 transitions. [2024-11-28 02:45:32,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:45:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 162 transitions. [2024-11-28 02:45:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:45:32,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:45:32,486 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:45:32,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:45:32,486 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:45:32,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:45:32,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1660159386, now seen corresponding path program 1 times [2024-11-28 02:45:32,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:45:32,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324940431] [2024-11-28 02:45:32,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:45:32,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:45:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:46:50,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:50,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324940431] [2024-11-28 02:46:50,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324940431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:50,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:50,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:46:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243959241] [2024-11-28 02:46:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:50,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:46:50,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:50,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:46:50,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:46:50,731 INFO L87 Difference]: Start difference. First operand 108 states and 162 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:46:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:54,516 INFO L93 Difference]: Finished difference Result 246 states and 362 transitions. [2024-11-28 02:46:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:46:54,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 155 [2024-11-28 02:46:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:54,520 INFO L225 Difference]: With dead ends: 246 [2024-11-28 02:46:54,520 INFO L226 Difference]: Without dead ends: 141 [2024-11-28 02:46:54,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:46:54,522 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 140 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:54,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 648 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:46:54,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-28 02:46:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 108. [2024-11-28 02:46:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 02:46:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 162 transitions. [2024-11-28 02:46:54,541 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 162 transitions. Word has length 155 [2024-11-28 02:46:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:54,542 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 162 transitions. [2024-11-28 02:46:54,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:46:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 162 transitions. [2024-11-28 02:46:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:46:54,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:54,546 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:54,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:46:54,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:54,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 307033850, now seen corresponding path program 1 times [2024-11-28 02:46:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569936058] [2024-11-28 02:46:54,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:46:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:46:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:46:54,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569936058] [2024-11-28 02:46:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569936058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:46:54,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:46:54,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:46:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730036475] [2024-11-28 02:46:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:46:54,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:46:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:46:54,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:46:54,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:46:54,908 INFO L87 Difference]: Start difference. First operand 108 states and 162 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:46:55,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:46:55,110 INFO L93 Difference]: Finished difference Result 262 states and 391 transitions. [2024-11-28 02:46:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:46:55,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 155 [2024-11-28 02:46:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:46:55,113 INFO L225 Difference]: With dead ends: 262 [2024-11-28 02:46:55,113 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 02:46:55,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:46:55,115 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 96 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:46:55,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 490 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:46:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 02:46:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2024-11-28 02:46:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 120 states have internal predecessors, (165), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-28 02:46:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 229 transitions. [2024-11-28 02:46:55,134 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 229 transitions. Word has length 155 [2024-11-28 02:46:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:46:55,134 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 229 transitions. [2024-11-28 02:46:55,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:46:55,135 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 229 transitions. [2024-11-28 02:46:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:46:55,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:46:55,138 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:46:55,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:46:55,138 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:46:55,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:46:55,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1281314052, now seen corresponding path program 1 times [2024-11-28 02:46:55,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:46:55,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593545174] [2024-11-28 02:46:55,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:46:55,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:46:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:50:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:50:23,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:50:23,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593545174] [2024-11-28 02:50:23,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593545174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:50:23,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:50:23,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:50:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016098273] [2024-11-28 02:50:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:50:23,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:50:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:50:23,611 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:50:23,611 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:50:23,611 INFO L87 Difference]: Start difference. First operand 154 states and 229 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 02:50:28,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:50:28,442 INFO L93 Difference]: Finished difference Result 427 states and 635 transitions. [2024-11-28 02:50:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:50:28,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 155 [2024-11-28 02:50:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:50:28,447 INFO L225 Difference]: With dead ends: 427 [2024-11-28 02:50:28,448 INFO L226 Difference]: Without dead ends: 276 [2024-11-28 02:50:28,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:50:28,450 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 351 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:50:28,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 464 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 02:50:28,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-28 02:50:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 259. [2024-11-28 02:50:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 190 states have (on average 1.3736842105263158) internal successors, (261), 192 states have internal predecessors, (261), 64 states have call successors, (64), 4 states have call predecessors, (64), 4 states have return successors, (64), 62 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-28 02:50:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 389 transitions. [2024-11-28 02:50:28,521 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 389 transitions. Word has length 155 [2024-11-28 02:50:28,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:50:28,522 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 389 transitions. [2024-11-28 02:50:28,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 02:50:28,522 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 389 transitions. [2024-11-28 02:50:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:50:28,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:50:28,528 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:50:28,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:50:28,528 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:50:28,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:50:28,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1212817088, now seen corresponding path program 1 times [2024-11-28 02:50:28,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:50:28,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994353136] [2024-11-28 02:50:28,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:50:28,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:50:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:54:22,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:22,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994353136] [2024-11-28 02:54:22,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994353136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:22,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:22,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:54:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299579874] [2024-11-28 02:54:22,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:22,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:54:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:22,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:54:22,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:54:22,377 INFO L87 Difference]: Start difference. First operand 259 states and 389 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 02:54:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:30,875 INFO L93 Difference]: Finished difference Result 530 states and 768 transitions. [2024-11-28 02:54:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:54:30,876 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2024-11-28 02:54:30,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:30,879 INFO L225 Difference]: With dead ends: 530 [2024-11-28 02:54:30,879 INFO L226 Difference]: Without dead ends: 379 [2024-11-28 02:54:30,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 02:54:30,881 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 713 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:30,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 649 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:54:30,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-28 02:54:30,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 296. [2024-11-28 02:54:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 224 states have (on average 1.375) internal successors, (308), 227 states have internal predecessors, (308), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-28 02:54:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 440 transitions. [2024-11-28 02:54:30,933 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 440 transitions. Word has length 156 [2024-11-28 02:54:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:30,934 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 440 transitions. [2024-11-28 02:54:30,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 16 states have internal predecessors, (39), 3 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 02:54:30,934 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 440 transitions. [2024-11-28 02:54:30,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:30,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:30,937 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:30,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:54:30,938 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:30,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1645141440, now seen corresponding path program 1 times [2024-11-28 02:54:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864906367] [2024-11-28 02:54:30,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:54:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864906367] [2024-11-28 02:54:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864906367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:36,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:54:36,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372860378] [2024-11-28 02:54:36,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:36,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:54:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:36,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:54:36,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:54:36,819 INFO L87 Difference]: Start difference. First operand 296 states and 440 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:54:38,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:38,772 INFO L93 Difference]: Finished difference Result 498 states and 730 transitions. [2024-11-28 02:54:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:54:38,774 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156 [2024-11-28 02:54:38,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:38,777 INFO L225 Difference]: With dead ends: 498 [2024-11-28 02:54:38,777 INFO L226 Difference]: Without dead ends: 310 [2024-11-28 02:54:38,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:54:38,779 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 94 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:38,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 678 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:54:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-28 02:54:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 291. [2024-11-28 02:54:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 219 states have (on average 1.360730593607306) internal successors, (298), 222 states have internal predecessors, (298), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-28 02:54:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 430 transitions. [2024-11-28 02:54:38,835 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 430 transitions. Word has length 156 [2024-11-28 02:54:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:38,840 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 430 transitions. [2024-11-28 02:54:38,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:54:38,840 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 430 transitions. [2024-11-28 02:54:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:38,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:38,843 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:38,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:54:38,844 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:38,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash 129865922, now seen corresponding path program 1 times [2024-11-28 02:54:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:38,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412001346] [2024-11-28 02:54:38,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:54:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-28 02:54:43,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:54:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412001346] [2024-11-28 02:54:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412001346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:54:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:54:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:54:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159440931] [2024-11-28 02:54:43,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:54:43,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:54:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:54:43,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:54:43,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:54:43,721 INFO L87 Difference]: Start difference. First operand 291 states and 430 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:54:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:54:46,772 INFO L93 Difference]: Finished difference Result 509 states and 738 transitions. [2024-11-28 02:54:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:54:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156 [2024-11-28 02:54:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:54:46,776 INFO L225 Difference]: With dead ends: 509 [2024-11-28 02:54:46,776 INFO L226 Difference]: Without dead ends: 326 [2024-11-28 02:54:46,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:54:46,778 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 180 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:54:46,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1014 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:54:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-28 02:54:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 291. [2024-11-28 02:54:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 219 states have (on average 1.360730593607306) internal successors, (298), 222 states have internal predecessors, (298), 66 states have call successors, (66), 5 states have call predecessors, (66), 5 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-28 02:54:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 430 transitions. [2024-11-28 02:54:46,819 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 430 transitions. Word has length 156 [2024-11-28 02:54:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:54:46,819 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 430 transitions. [2024-11-28 02:54:46,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-28 02:54:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 430 transitions. [2024-11-28 02:54:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 02:54:46,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:54:46,822 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:54:46,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:54:46,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:54:46,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:54:46,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1088005502, now seen corresponding path program 1 times [2024-11-28 02:54:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:54:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11672666] [2024-11-28 02:54:46,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:54:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:54:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat