./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c --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_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a770e072308583e36326282bebae23c1c98c748d42f3621fe7141c74e78b303 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:20:32,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:20:32,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:20:32,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:20:32,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:20:32,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:20:32,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:20:32,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:20:32,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:20:32,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:20:32,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:20:32,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:20:32,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:20:32,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:20:32,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:20:32,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:20:32,995 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:20:32,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:20:32,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:20:32,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:20:32,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:20:32,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:20:32,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:20:32,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:20:32,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:20:32,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:20:32,997 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_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a770e072308583e36326282bebae23c1c98c748d42f3621fe7141c74e78b303 [2024-12-02 06:20:33,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:20:33,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:20:33,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:20:33,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:20:33,211 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:20:33,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2024-12-02 06:20:35,870 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/data/139abd46b/a823e8379cd7453a922fedd940c811a8/FLAG868dd44b7 [2024-12-02 06:20:36,265 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:20:36,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2024-12-02 06:20:36,291 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/data/139abd46b/a823e8379cd7453a922fedd940c811a8/FLAG868dd44b7 [2024-12-02 06:20:36,305 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/data/139abd46b/a823e8379cd7453a922fedd940c811a8 [2024-12-02 06:20:36,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:20:36,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:20:36,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:20:36,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:20:36,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:20:36,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:20:36" (1/1) ... [2024-12-02 06:20:36,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af60c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:36, skipping insertion in model container [2024-12-02 06:20:36,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:20:36" (1/1) ... [2024-12-02 06:20:36,418 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:20:36,680 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_73515489-ebe4-4d06-922d-ff8fbdcf4de3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[6354,6367] [2024-12-02 06:20:36,711 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_73515489-ebe4-4d06-922d-ff8fbdcf4de3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[7196,7209] [2024-12-02 06:20:37,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:20:37,329 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:20:37,351 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_73515489-ebe4-4d06-922d-ff8fbdcf4de3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[6354,6367] [2024-12-02 06:20:37,354 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_73515489-ebe4-4d06-922d-ff8fbdcf4de3/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c[7196,7209] [2024-12-02 06:20:37,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:20:37,710 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:20:37,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37 WrapperNode [2024-12-02 06:20:37,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:20:37,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:20:37,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:20:37,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:20:37,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:37,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:37,977 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4981 [2024-12-02 06:20:37,978 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:20:37,978 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:20:37,978 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:20:37,978 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:20:37,985 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:37,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,019 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,157 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:20:38,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,231 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:20:38,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:20:38,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:20:38,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:20:38,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (1/1) ... [2024-12-02 06:20:38,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:20:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:20:38,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:20:38,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:20:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:20:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:20:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:20:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:20:38,481 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:20:38,483 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:20:42,700 INFO L? ?]: Removed 732 outVars from TransFormulas that were not future-live. [2024-12-02 06:20:42,700 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:20:42,725 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:20:42,725 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 06:20:42,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:20:42 BoogieIcfgContainer [2024-12-02 06:20:42,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:20:42,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:20:42,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:20:42,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:20:42,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:20:36" (1/3) ... [2024-12-02 06:20:42,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a3a652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:20:42, skipping insertion in model container [2024-12-02 06:20:42,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:20:37" (2/3) ... [2024-12-02 06:20:42,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a3a652 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:20:42, skipping insertion in model container [2024-12-02 06:20:42,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:20:42" (3/3) ... [2024-12-02 06:20:42,735 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c [2024-12-02 06:20:42,745 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:20:42,747 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label07.c that has 1 procedures, 873 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 06:20:42,811 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:20:42,821 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;@13ac8b7c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:20:42,821 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 06:20:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 06:20:42,831 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:42,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:42,831 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:42,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:42,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2037972701, now seen corresponding path program 1 times [2024-12-02 06:20:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:42,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861563946] [2024-12-02 06:20:42,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:42,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:43,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:43,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861563946] [2024-12-02 06:20:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861563946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:43,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:43,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:20:43,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514993159] [2024-12-02 06:20:43,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:43,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:43,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:43,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:43,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:43,029 INFO L87 Difference]: Start difference. First operand has 873 states, 870 states have (on average 1.9057471264367816) internal successors, (1658), 872 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:46,288 INFO L93 Difference]: Finished difference Result 2479 states and 4778 transitions. [2024-12-02 06:20:46,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:46,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-12-02 06:20:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:46,306 INFO L225 Difference]: With dead ends: 2479 [2024-12-02 06:20:46,306 INFO L226 Difference]: Without dead ends: 1558 [2024-12-02 06:20:46,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:46,314 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 942 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:46,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 193 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 06:20:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2024-12-02 06:20:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1558. [2024-12-02 06:20:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.8637532133676094) internal successors, (2900), 1557 states have internal predecessors, (2900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2900 transitions. [2024-12-02 06:20:46,395 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2900 transitions. Word has length 7 [2024-12-02 06:20:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:46,395 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2900 transitions. [2024-12-02 06:20:46,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2900 transitions. [2024-12-02 06:20:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 06:20:46,396 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:46,396 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:46,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:20:46,397 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:46,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1353434260, now seen corresponding path program 1 times [2024-12-02 06:20:46,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:46,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756261433] [2024-12-02 06:20:46,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:46,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:46,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:46,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756261433] [2024-12-02 06:20:46,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756261433] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:46,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:46,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:46,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441917034] [2024-12-02 06:20:46,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:46,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:46,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:46,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:46,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:46,553 INFO L87 Difference]: Start difference. First operand 1558 states and 2900 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:46,602 INFO L93 Difference]: Finished difference Result 1624 states and 3000 transitions. [2024-12-02 06:20:46,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:46,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-12-02 06:20:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:46,607 INFO L225 Difference]: With dead ends: 1624 [2024-12-02 06:20:46,607 INFO L226 Difference]: Without dead ends: 1589 [2024-12-02 06:20:46,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:46,608 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 47 mSDsluCounter, 4541 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6062 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:46,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 6062 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:46,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2024-12-02 06:20:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1558. [2024-12-02 06:20:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1556 states have (on average 1.8534704370179949) internal successors, (2884), 1557 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2884 transitions. [2024-12-02 06:20:46,635 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2884 transitions. Word has length 21 [2024-12-02 06:20:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:46,635 INFO L471 AbstractCegarLoop]: Abstraction has 1558 states and 2884 transitions. [2024-12-02 06:20:46,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2884 transitions. [2024-12-02 06:20:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 06:20:46,636 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:46,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:46,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:20:46,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:46,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash 904930012, now seen corresponding path program 1 times [2024-12-02 06:20:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:46,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277012012] [2024-12-02 06:20:46,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:46,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277012012] [2024-12-02 06:20:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277012012] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:46,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793609553] [2024-12-02 06:20:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:46,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:46,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:46,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:46,749 INFO L87 Difference]: Start difference. First operand 1558 states and 2884 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:46,870 INFO L93 Difference]: Finished difference Result 1744 states and 3172 transitions. [2024-12-02 06:20:46,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:20:46,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-12-02 06:20:46,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:46,876 INFO L225 Difference]: With dead ends: 1744 [2024-12-02 06:20:46,876 INFO L226 Difference]: Without dead ends: 1713 [2024-12-02 06:20:46,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 06:20:46,877 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 4627 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:46,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 1775 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:20:46,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-12-02 06:20:46,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1587. [2024-12-02 06:20:46,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1587 states, 1585 states have (on average 1.8479495268138801) internal successors, (2929), 1586 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 2929 transitions. [2024-12-02 06:20:46,904 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 2929 transitions. Word has length 36 [2024-12-02 06:20:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:46,904 INFO L471 AbstractCegarLoop]: Abstraction has 1587 states and 2929 transitions. [2024-12-02 06:20:46,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 2929 transitions. [2024-12-02 06:20:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 06:20:46,905 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:46,905 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:46,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:20:46,906 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:46,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 638646444, now seen corresponding path program 1 times [2024-12-02 06:20:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248118721] [2024-12-02 06:20:46,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:46,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:46,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248118721] [2024-12-02 06:20:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248118721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:46,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:46,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676956755] [2024-12-02 06:20:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:46,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:46,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:46,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:46,966 INFO L87 Difference]: Start difference. First operand 1587 states and 2929 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:46,994 INFO L93 Difference]: Finished difference Result 1696 states and 3096 transitions. [2024-12-02 06:20:46,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 06:20:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:46,998 INFO L225 Difference]: With dead ends: 1696 [2024-12-02 06:20:46,998 INFO L226 Difference]: Without dead ends: 1636 [2024-12-02 06:20:46,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:46,999 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:47,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1549 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:47,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-12-02 06:20:47,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-12-02 06:20:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8376225490196079) internal successors, (2999), 1633 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2999 transitions. [2024-12-02 06:20:47,027 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2999 transitions. Word has length 38 [2024-12-02 06:20:47,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:47,027 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2999 transitions. [2024-12-02 06:20:47,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2999 transitions. [2024-12-02 06:20:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-02 06:20:47,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:47,028 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:47,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:20:47,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:47,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash 705139956, now seen corresponding path program 1 times [2024-12-02 06:20:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:47,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944993303] [2024-12-02 06:20:47,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:47,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:47,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:47,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:47,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944993303] [2024-12-02 06:20:47,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944993303] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:47,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:47,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584467255] [2024-12-02 06:20:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:47,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:47,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:47,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:47,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:47,169 INFO L87 Difference]: Start difference. First operand 1634 states and 2999 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:47,239 INFO L93 Difference]: Finished difference Result 1743 states and 3163 transitions. [2024-12-02 06:20:47,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:47,239 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-02 06:20:47,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:47,243 INFO L225 Difference]: With dead ends: 1743 [2024-12-02 06:20:47,243 INFO L226 Difference]: Without dead ends: 1636 [2024-12-02 06:20:47,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:20:47,245 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 2946 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:47,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1595 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2024-12-02 06:20:47,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2024-12-02 06:20:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8363970588235294) internal successors, (2997), 1633 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2997 transitions. [2024-12-02 06:20:47,271 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2997 transitions. Word has length 38 [2024-12-02 06:20:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:47,271 INFO L471 AbstractCegarLoop]: Abstraction has 1634 states and 2997 transitions. [2024-12-02 06:20:47,271 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2997 transitions. [2024-12-02 06:20:47,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-02 06:20:47,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:47,272 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:47,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:20:47,272 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:47,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:47,273 INFO L85 PathProgramCache]: Analyzing trace with hash -30221064, now seen corresponding path program 1 times [2024-12-02 06:20:47,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:47,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050481041] [2024-12-02 06:20:47,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:47,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:47,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:47,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050481041] [2024-12-02 06:20:47,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050481041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:47,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:47,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:47,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993365182] [2024-12-02 06:20:47,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:47,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:47,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:47,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:47,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:47,413 INFO L87 Difference]: Start difference. First operand 1634 states and 2997 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:47,456 INFO L93 Difference]: Finished difference Result 1642 states and 3006 transitions. [2024-12-02 06:20:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:47,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-02 06:20:47,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:47,463 INFO L225 Difference]: With dead ends: 1642 [2024-12-02 06:20:47,463 INFO L226 Difference]: Without dead ends: 1640 [2024-12-02 06:20:47,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:47,465 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 0 mSDsluCounter, 4509 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:47,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6015 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2024-12-02 06:20:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2024-12-02 06:20:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1638 states have (on average 1.8327228327228327) internal successors, (3002), 1639 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 3002 transitions. [2024-12-02 06:20:47,490 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 3002 transitions. Word has length 39 [2024-12-02 06:20:47,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:47,490 INFO L471 AbstractCegarLoop]: Abstraction has 1640 states and 3002 transitions. [2024-12-02 06:20:47,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 3002 transitions. [2024-12-02 06:20:47,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 06:20:47,491 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:47,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:47,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:20:47,491 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:47,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1276756908, now seen corresponding path program 1 times [2024-12-02 06:20:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:47,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409037806] [2024-12-02 06:20:47,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:47,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:47,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409037806] [2024-12-02 06:20:47,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409037806] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:47,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:47,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:47,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229476133] [2024-12-02 06:20:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:47,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:47,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:47,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:47,528 INFO L87 Difference]: Start difference. First operand 1640 states and 3002 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:47,554 INFO L93 Difference]: Finished difference Result 1850 states and 3306 transitions. [2024-12-02 06:20:47,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:47,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 06:20:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:47,558 INFO L225 Difference]: With dead ends: 1850 [2024-12-02 06:20:47,558 INFO L226 Difference]: Without dead ends: 1737 [2024-12-02 06:20:47,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:47,559 INFO L435 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:47,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:47,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-12-02 06:20:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2024-12-02 06:20:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.8090017311021351) internal successors, (3135), 1734 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 3135 transitions. [2024-12-02 06:20:47,586 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 3135 transitions. Word has length 40 [2024-12-02 06:20:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:47,586 INFO L471 AbstractCegarLoop]: Abstraction has 1735 states and 3135 transitions. [2024-12-02 06:20:47,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 3135 transitions. [2024-12-02 06:20:47,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 06:20:47,587 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:47,587 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:47,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:20:47,587 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:47,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:47,587 INFO L85 PathProgramCache]: Analyzing trace with hash 504175956, now seen corresponding path program 1 times [2024-12-02 06:20:47,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:47,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756082849] [2024-12-02 06:20:47,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:47,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:47,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756082849] [2024-12-02 06:20:47,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756082849] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:47,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:47,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:47,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894132847] [2024-12-02 06:20:47,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:47,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:47,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:47,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:47,633 INFO L87 Difference]: Start difference. First operand 1735 states and 3135 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:47,662 INFO L93 Difference]: Finished difference Result 2119 states and 3677 transitions. [2024-12-02 06:20:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:47,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 06:20:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:47,668 INFO L225 Difference]: With dead ends: 2119 [2024-12-02 06:20:47,668 INFO L226 Difference]: Without dead ends: 1911 [2024-12-02 06:20:47,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:47,669 INFO L435 NwaCegarLoop]: 1533 mSDtfsCounter, 1472 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:47,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2024-12-02 06:20:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1909. [2024-12-02 06:20:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1907 states have (on average 1.766649187205034) internal successors, (3369), 1908 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 3369 transitions. [2024-12-02 06:20:47,701 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 3369 transitions. Word has length 40 [2024-12-02 06:20:47,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:47,701 INFO L471 AbstractCegarLoop]: Abstraction has 1909 states and 3369 transitions. [2024-12-02 06:20:47,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 3369 transitions. [2024-12-02 06:20:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-12-02 06:20:47,702 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:47,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:47,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:20:47,702 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:47,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:47,703 INFO L85 PathProgramCache]: Analyzing trace with hash 938711892, now seen corresponding path program 1 times [2024-12-02 06:20:47,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:47,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127709738] [2024-12-02 06:20:47,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:47,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:47,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127709738] [2024-12-02 06:20:47,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127709738] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:47,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:47,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:47,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126522504] [2024-12-02 06:20:47,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:47,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:47,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:47,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:47,749 INFO L87 Difference]: Start difference. First operand 1909 states and 3369 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:47,788 INFO L93 Difference]: Finished difference Result 2332 states and 3967 transitions. [2024-12-02 06:20:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:47,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-12-02 06:20:47,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:47,796 INFO L225 Difference]: With dead ends: 2332 [2024-12-02 06:20:47,796 INFO L226 Difference]: Without dead ends: 2106 [2024-12-02 06:20:47,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:47,797 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 1476 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:47,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1590 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2024-12-02 06:20:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2104. [2024-12-02 06:20:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2102 states have (on average 1.7278782112274025) internal successors, (3632), 2103 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3632 transitions. [2024-12-02 06:20:47,851 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3632 transitions. Word has length 40 [2024-12-02 06:20:47,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:47,852 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 3632 transitions. [2024-12-02 06:20:47,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:47,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3632 transitions. [2024-12-02 06:20:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 06:20:47,853 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:47,853 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:47,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:20:47,853 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:47,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1906548838, now seen corresponding path program 1 times [2024-12-02 06:20:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861406622] [2024-12-02 06:20:47,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 06:20:47,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:47,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861406622] [2024-12-02 06:20:47,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861406622] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:47,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:47,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:47,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749532663] [2024-12-02 06:20:47,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:47,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:47,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:47,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:47,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:47,996 INFO L87 Difference]: Start difference. First operand 2104 states and 3632 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:48,114 INFO L93 Difference]: Finished difference Result 3960 states and 6184 transitions. [2024-12-02 06:20:48,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:48,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 06:20:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:48,126 INFO L225 Difference]: With dead ends: 3960 [2024-12-02 06:20:48,126 INFO L226 Difference]: Without dead ends: 3386 [2024-12-02 06:20:48,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:48,128 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3042 mSDsluCounter, 1611 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:48,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 3159 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2024-12-02 06:20:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2676. [2024-12-02 06:20:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 2674 states have (on average 1.649962602842184) internal successors, (4412), 2675 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 4412 transitions. [2024-12-02 06:20:48,206 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 4412 transitions. Word has length 56 [2024-12-02 06:20:48,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:48,207 INFO L471 AbstractCegarLoop]: Abstraction has 2676 states and 4412 transitions. [2024-12-02 06:20:48,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 4412 transitions. [2024-12-02 06:20:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 06:20:48,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:48,208 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:48,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:20:48,208 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:48,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash -125615974, now seen corresponding path program 1 times [2024-12-02 06:20:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816940903] [2024-12-02 06:20:48,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:48,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:48,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 06:20:48,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:48,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816940903] [2024-12-02 06:20:48,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816940903] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:48,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:48,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:48,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506227112] [2024-12-02 06:20:48,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:48,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:48,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:48,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:48,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:48,322 INFO L87 Difference]: Start difference. First operand 2676 states and 4412 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:48,443 INFO L93 Difference]: Finished difference Result 4532 states and 6964 transitions. [2024-12-02 06:20:48,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:48,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 06:20:48,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:48,457 INFO L225 Difference]: With dead ends: 4532 [2024-12-02 06:20:48,457 INFO L226 Difference]: Without dead ends: 3958 [2024-12-02 06:20:48,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:48,460 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 3048 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3048 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:48,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3048 Valid, 3155 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:48,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2024-12-02 06:20:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3536. [2024-12-02 06:20:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3536 states, 3534 states have (on average 1.5766836445953594) internal successors, (5572), 3535 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3536 states to 3536 states and 5572 transitions. [2024-12-02 06:20:48,565 INFO L78 Accepts]: Start accepts. Automaton has 3536 states and 5572 transitions. Word has length 56 [2024-12-02 06:20:48,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:48,565 INFO L471 AbstractCegarLoop]: Abstraction has 3536 states and 5572 transitions. [2024-12-02 06:20:48,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3536 states and 5572 transitions. [2024-12-02 06:20:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-12-02 06:20:48,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:48,567 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:48,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:20:48,567 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:48,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:48,567 INFO L85 PathProgramCache]: Analyzing trace with hash 308919962, now seen corresponding path program 1 times [2024-12-02 06:20:48,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:48,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505492867] [2024-12-02 06:20:48,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:48,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:20:48,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:48,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505492867] [2024-12-02 06:20:48,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505492867] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:48,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:48,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:20:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266531642] [2024-12-02 06:20:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:48,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:20:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:48,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:20:48,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:20:48,673 INFO L87 Difference]: Start difference. First operand 3536 states and 5572 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:48,806 INFO L93 Difference]: Finished difference Result 4792 states and 7328 transitions. [2024-12-02 06:20:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:20:48,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-12-02 06:20:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:48,818 INFO L225 Difference]: With dead ends: 4792 [2024-12-02 06:20:48,818 INFO L226 Difference]: Without dead ends: 4374 [2024-12-02 06:20:48,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:20:48,820 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3043 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:48,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3163 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:48,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4374 states. [2024-12-02 06:20:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4374 to 3952. [2024-12-02 06:20:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5564556962025315) internal successors, (6148), 3951 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6148 transitions. [2024-12-02 06:20:48,942 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6148 transitions. Word has length 56 [2024-12-02 06:20:48,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:48,943 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6148 transitions. [2024-12-02 06:20:48,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:48,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6148 transitions. [2024-12-02 06:20:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 06:20:48,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:48,944 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:48,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:20:48,944 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:48,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:48,944 INFO L85 PathProgramCache]: Analyzing trace with hash 977738755, now seen corresponding path program 1 times [2024-12-02 06:20:48,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:48,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907771983] [2024-12-02 06:20:48,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:48,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:49,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:49,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907771983] [2024-12-02 06:20:49,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907771983] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:49,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:49,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:49,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253469017] [2024-12-02 06:20:49,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:49,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:49,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:49,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:49,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:49,045 INFO L87 Difference]: Start difference. First operand 3952 states and 6148 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:49,154 INFO L93 Difference]: Finished difference Result 6376 states and 9458 transitions. [2024-12-02 06:20:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:49,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-12-02 06:20:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:49,164 INFO L225 Difference]: With dead ends: 6376 [2024-12-02 06:20:49,164 INFO L226 Difference]: Without dead ends: 3954 [2024-12-02 06:20:49,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:49,168 INFO L435 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:49,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3954 states. [2024-12-02 06:20:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3954 to 3952. [2024-12-02 06:20:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3952 states, 3950 states have (on average 1.5437974683544304) internal successors, (6098), 3951 states have internal predecessors, (6098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3952 states to 3952 states and 6098 transitions. [2024-12-02 06:20:49,267 INFO L78 Accepts]: Start accepts. Automaton has 3952 states and 6098 transitions. Word has length 57 [2024-12-02 06:20:49,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:49,267 INFO L471 AbstractCegarLoop]: Abstraction has 3952 states and 6098 transitions. [2024-12-02 06:20:49,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3952 states and 6098 transitions. [2024-12-02 06:20:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 06:20:49,269 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:49,269 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:49,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:20:49,269 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:49,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash 408394290, now seen corresponding path program 1 times [2024-12-02 06:20:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628882557] [2024-12-02 06:20:49,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:49,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:49,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628882557] [2024-12-02 06:20:49,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628882557] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:49,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147724540] [2024-12-02 06:20:49,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:49,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:49,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:49,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:49,364 INFO L87 Difference]: Start difference. First operand 3952 states and 6098 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:49,406 INFO L93 Difference]: Finished difference Result 4908 states and 7395 transitions. [2024-12-02 06:20:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-12-02 06:20:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:49,412 INFO L225 Difference]: With dead ends: 4908 [2024-12-02 06:20:49,412 INFO L226 Difference]: Without dead ends: 2486 [2024-12-02 06:20:49,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:49,416 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:49,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2024-12-02 06:20:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 2477. [2024-12-02 06:20:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.6602020202020202) internal successors, (4109), 2476 states have internal predecessors, (4109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 4109 transitions. [2024-12-02 06:20:49,467 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 4109 transitions. Word has length 58 [2024-12-02 06:20:49,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:49,467 INFO L471 AbstractCegarLoop]: Abstraction has 2477 states and 4109 transitions. [2024-12-02 06:20:49,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 4109 transitions. [2024-12-02 06:20:49,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 06:20:49,468 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:49,468 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:49,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:20:49,469 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:49,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1553558485, now seen corresponding path program 1 times [2024-12-02 06:20:49,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:49,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314756800] [2024-12-02 06:20:49,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:49,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314756800] [2024-12-02 06:20:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314756800] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:20:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:20:49,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:20:49,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439599941] [2024-12-02 06:20:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:20:49,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:20:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:49,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:20:49,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:49,558 INFO L87 Difference]: Start difference. First operand 2477 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:49,589 INFO L93 Difference]: Finished difference Result 2949 states and 4741 transitions. [2024-12-02 06:20:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:20:49,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-02 06:20:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:49,594 INFO L225 Difference]: With dead ends: 2949 [2024-12-02 06:20:49,594 INFO L226 Difference]: Without dead ends: 2011 [2024-12-02 06:20:49,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:20:49,595 INFO L435 NwaCegarLoop]: 1520 mSDtfsCounter, 25 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:49,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:20:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2024-12-02 06:20:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 2009. [2024-12-02 06:20:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2007 states have (on average 1.7289486796213254) internal successors, (3470), 2008 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3470 transitions. [2024-12-02 06:20:49,632 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3470 transitions. Word has length 59 [2024-12-02 06:20:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:49,632 INFO L471 AbstractCegarLoop]: Abstraction has 2009 states and 3470 transitions. [2024-12-02 06:20:49,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3470 transitions. [2024-12-02 06:20:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 06:20:49,633 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:49,633 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:49,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:20:49,633 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:49,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1066169817, now seen corresponding path program 1 times [2024-12-02 06:20:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:49,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558083304] [2024-12-02 06:20:49,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:50,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:50,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558083304] [2024-12-02 06:20:50,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558083304] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:20:50,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265768789] [2024-12-02 06:20:50,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:50,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:20:50,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:20:50,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:20:50,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:20:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:50,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 06:20:50,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:20:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:50,711 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:20:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265768789] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:20:51,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:20:51,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-12-02 06:20:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134507114] [2024-12-02 06:20:51,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:20:51,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 06:20:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:51,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 06:20:51,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-12-02 06:20:51,550 INFO L87 Difference]: Start difference. First operand 2009 states and 3470 transitions. Second operand has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 25 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:53,377 INFO L93 Difference]: Finished difference Result 4003 states and 6123 transitions. [2024-12-02 06:20:53,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 06:20:53,378 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 25 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-12-02 06:20:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:53,386 INFO L225 Difference]: With dead ends: 4003 [2024-12-02 06:20:53,386 INFO L226 Difference]: Without dead ends: 3533 [2024-12-02 06:20:53,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=672, Invalid=2298, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 06:20:53,389 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 19744 mSDsluCounter, 6307 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19744 SdHoareTripleChecker+Valid, 7800 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:53,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19744 Valid, 7800 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:20:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2024-12-02 06:20:53,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3485. [2024-12-02 06:20:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3483 states have (on average 1.5414872236577664) internal successors, (5369), 3484 states have internal predecessors, (5369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5369 transitions. [2024-12-02 06:20:53,473 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5369 transitions. Word has length 61 [2024-12-02 06:20:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:53,473 INFO L471 AbstractCegarLoop]: Abstraction has 3485 states and 5369 transitions. [2024-12-02 06:20:53,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.961538461538462) internal successors, (155), 25 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5369 transitions. [2024-12-02 06:20:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-02 06:20:53,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:53,474 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:53,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:20:53,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 06:20:53,675 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:53,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1747404544, now seen corresponding path program 1 times [2024-12-02 06:20:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264332752] [2024-12-02 06:20:53,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:54,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:54,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264332752] [2024-12-02 06:20:54,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264332752] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:20:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071524857] [2024-12-02 06:20:54,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:54,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:20:54,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:20:54,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:20:54,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:20:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:54,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 06:20:54,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:20:55,248 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:55,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:20:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:56,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071524857] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:20:56,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:20:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 30 [2024-12-02 06:20:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694799236] [2024-12-02 06:20:56,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:20:56,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 06:20:56,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:20:56,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 06:20:56,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:20:56,304 INFO L87 Difference]: Start difference. First operand 3485 states and 5369 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:57,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:20:57,578 INFO L93 Difference]: Finished difference Result 9689 states and 13439 transitions. [2024-12-02 06:20:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 06:20:57,579 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-12-02 06:20:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:20:57,588 INFO L225 Difference]: With dead ends: 9689 [2024-12-02 06:20:57,588 INFO L226 Difference]: Without dead ends: 7743 [2024-12-02 06:20:57,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 06:20:57,592 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 16801 mSDsluCounter, 9271 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16801 SdHoareTripleChecker+Valid, 10771 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:20:57,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16801 Valid, 10771 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 06:20:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7743 states. [2024-12-02 06:20:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7743 to 7517. [2024-12-02 06:20:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7517 states, 7515 states have (on average 1.3946773120425815) internal successors, (10481), 7516 states have internal predecessors, (10481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7517 states to 7517 states and 10481 transitions. [2024-12-02 06:20:57,732 INFO L78 Accepts]: Start accepts. Automaton has 7517 states and 10481 transitions. Word has length 62 [2024-12-02 06:20:57,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:20:57,732 INFO L471 AbstractCegarLoop]: Abstraction has 7517 states and 10481 transitions. [2024-12-02 06:20:57,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:20:57,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7517 states and 10481 transitions. [2024-12-02 06:20:57,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 06:20:57,733 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:20:57,733 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:20:57,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 06:20:57,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 06:20:57,933 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:20:57,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:20:57,934 INFO L85 PathProgramCache]: Analyzing trace with hash -679621431, now seen corresponding path program 1 times [2024-12-02 06:20:57,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:20:57,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543597529] [2024-12-02 06:20:57,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:57,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:20:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:20:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:20:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:20:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543597529] [2024-12-02 06:20:59,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543597529] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:20:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456232356] [2024-12-02 06:20:59,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:20:59,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:20:59,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:20:59,925 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:20:59,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:21:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:00,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 06:21:00,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:00,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:00,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:01,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456232356] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:01,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:01,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2024-12-02 06:21:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497920484] [2024-12-02 06:21:01,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:01,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 06:21:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:01,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 06:21:01,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1664, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 06:21:01,798 INFO L87 Difference]: Start difference. First operand 7517 states and 10481 transitions. Second operand has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:13,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:13,286 INFO L93 Difference]: Finished difference Result 20941 states and 27696 transitions. [2024-12-02 06:21:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-12-02 06:21:13,286 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 06:21:13,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:13,302 INFO L225 Difference]: With dead ends: 20941 [2024-12-02 06:21:13,302 INFO L226 Difference]: Without dead ends: 17851 [2024-12-02 06:21:13,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6487 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=3760, Invalid=15700, Unknown=0, NotChecked=0, Total=19460 [2024-12-02 06:21:13,307 INFO L435 NwaCegarLoop]: 1538 mSDtfsCounter, 22090 mSDsluCounter, 22140 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22090 SdHoareTripleChecker+Valid, 23678 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:13,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22090 Valid, 23678 Invalid, 2540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 06:21:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17851 states. [2024-12-02 06:21:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17851 to 6955. [2024-12-02 06:21:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6955 states, 6953 states have (on average 1.4019847547821085) internal successors, (9748), 6954 states have internal predecessors, (9748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:13,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6955 states to 6955 states and 9748 transitions. [2024-12-02 06:21:13,565 INFO L78 Accepts]: Start accepts. Automaton has 6955 states and 9748 transitions. Word has length 63 [2024-12-02 06:21:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:13,565 INFO L471 AbstractCegarLoop]: Abstraction has 6955 states and 9748 transitions. [2024-12-02 06:21:13,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.883720930232558) internal successors, (167), 43 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:13,565 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states and 9748 transitions. [2024-12-02 06:21:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 06:21:13,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:13,566 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:13,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 06:21:13,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 06:21:13,767 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:13,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1861102501, now seen corresponding path program 1 times [2024-12-02 06:21:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653184993] [2024-12-02 06:21:13,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653184993] [2024-12-02 06:21:14,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653184993] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:14,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115737175] [2024-12-02 06:21:14,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:14,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:14,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:14,373 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:14,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 06:21:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:14,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 06:21:14,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:18,488 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:20,150 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115737175] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:20,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 16] total 45 [2024-12-02 06:21:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683262659] [2024-12-02 06:21:20,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:20,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 06:21:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:20,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 06:21:20,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 06:21:20,152 INFO L87 Difference]: Start difference. First operand 6955 states and 9748 transitions. Second operand has 45 states, 45 states have (on average 3.888888888888889) internal successors, (175), 45 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:51,297 INFO L93 Difference]: Finished difference Result 13725 states and 18528 transitions. [2024-12-02 06:21:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-12-02 06:21:51,298 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.888888888888889) internal successors, (175), 45 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-12-02 06:21:51,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:51,308 INFO L225 Difference]: With dead ends: 13725 [2024-12-02 06:21:51,308 INFO L226 Difference]: Without dead ends: 10083 [2024-12-02 06:21:51,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12241 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=6708, Invalid=26964, Unknown=0, NotChecked=0, Total=33672 [2024-12-02 06:21:51,320 INFO L435 NwaCegarLoop]: 1541 mSDtfsCounter, 20730 mSDsluCounter, 23667 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20730 SdHoareTripleChecker+Valid, 25208 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:51,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20730 Valid, 25208 Invalid, 2578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 06:21:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10083 states. [2024-12-02 06:21:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10083 to 8037. [2024-12-02 06:21:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8037 states, 8035 states have (on average 1.3855631611698818) internal successors, (11133), 8036 states have internal predecessors, (11133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8037 states to 8037 states and 11133 transitions. [2024-12-02 06:21:51,596 INFO L78 Accepts]: Start accepts. Automaton has 8037 states and 11133 transitions. Word has length 63 [2024-12-02 06:21:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:51,596 INFO L471 AbstractCegarLoop]: Abstraction has 8037 states and 11133 transitions. [2024-12-02 06:21:51,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.888888888888889) internal successors, (175), 45 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 8037 states and 11133 transitions. [2024-12-02 06:21:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 06:21:51,597 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:51,597 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:51,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 06:21:51,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:51,798 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:51,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:51,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1140559890, now seen corresponding path program 1 times [2024-12-02 06:21:51,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:51,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56705544] [2024-12-02 06:21:51,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:21:51,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:51,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56705544] [2024-12-02 06:21:51,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56705544] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:51,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556679097] [2024-12-02 06:21:51,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:51,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:51,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:51,903 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:51,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 06:21:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:52,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 06:21:52,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:21:52,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:21:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 06:21:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556679097] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:21:52,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:21:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2024-12-02 06:21:52,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744914831] [2024-12-02 06:21:52,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:21:52,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 06:21:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:21:52,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 06:21:52,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:21:52,284 INFO L87 Difference]: Start difference. First operand 8037 states and 11133 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:21:52,950 INFO L93 Difference]: Finished difference Result 18047 states and 23569 transitions. [2024-12-02 06:21:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:21:52,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-12-02 06:21:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:21:52,958 INFO L225 Difference]: With dead ends: 18047 [2024-12-02 06:21:52,958 INFO L226 Difference]: Without dead ends: 11549 [2024-12-02 06:21:52,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-12-02 06:21:52,962 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 5815 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5815 SdHoareTripleChecker+Valid, 6159 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:21:52,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5815 Valid, 6159 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:21:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11549 states. [2024-12-02 06:21:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11549 to 10823. [2024-12-02 06:21:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10823 states, 10821 states have (on average 1.3094908049163663) internal successors, (14170), 10822 states have internal predecessors, (14170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:53,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10823 states to 10823 states and 14170 transitions. [2024-12-02 06:21:53,388 INFO L78 Accepts]: Start accepts. Automaton has 10823 states and 14170 transitions. Word has length 64 [2024-12-02 06:21:53,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:21:53,389 INFO L471 AbstractCegarLoop]: Abstraction has 10823 states and 14170 transitions. [2024-12-02 06:21:53,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:21:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10823 states and 14170 transitions. [2024-12-02 06:21:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 06:21:53,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:21:53,389 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:21:53,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 06:21:53,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:53,590 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:21:53,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:21:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1643524959, now seen corresponding path program 1 times [2024-12-02 06:21:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:21:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958361866] [2024-12-02 06:21:53,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:21:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:21:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958361866] [2024-12-02 06:21:54,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958361866] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:21:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298474709] [2024-12-02 06:21:54,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:21:54,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:21:54,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:21:54,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:21:54,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 06:21:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:21:54,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 06:21:54,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:21:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:21:58,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:22:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:22:02,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298474709] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:22:02,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:22:02,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 21] total 55 [2024-12-02 06:22:02,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096288148] [2024-12-02 06:22:02,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:22:02,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 06:22:02,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:22:02,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 06:22:02,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2617, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 06:22:02,350 INFO L87 Difference]: Start difference. First operand 10823 states and 14170 transitions. Second operand has 55 states, 55 states have (on average 3.109090909090909) internal successors, (171), 55 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:22:06,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-12-02 06:23:08,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:08,477 INFO L93 Difference]: Finished difference Result 21226 states and 26976 transitions. [2024-12-02 06:23:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2024-12-02 06:23:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.109090909090909) internal successors, (171), 55 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 06:23:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:08,488 INFO L225 Difference]: With dead ends: 21226 [2024-12-02 06:23:08,488 INFO L226 Difference]: Without dead ends: 16544 [2024-12-02 06:23:08,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19957 ImplicationChecksByTransitivity, 61.8s TimeCoverageRelationStatistics Valid=11675, Invalid=38722, Unknown=3, NotChecked=0, Total=50400 [2024-12-02 06:23:08,494 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 15654 mSDsluCounter, 23148 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15654 SdHoareTripleChecker+Valid, 24690 SdHoareTripleChecker+Invalid, 3607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:08,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15654 Valid, 24690 Invalid, 3607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [183 Valid, 3424 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-12-02 06:23:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16544 states. [2024-12-02 06:23:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16544 to 11325. [2024-12-02 06:23:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11325 states, 11323 states have (on average 1.3103417822131944) internal successors, (14837), 11324 states have internal predecessors, (14837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 14837 transitions. [2024-12-02 06:23:09,008 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 14837 transitions. Word has length 65 [2024-12-02 06:23:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:09,008 INFO L471 AbstractCegarLoop]: Abstraction has 11325 states and 14837 transitions. [2024-12-02 06:23:09,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.109090909090909) internal successors, (171), 55 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 14837 transitions. [2024-12-02 06:23:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-12-02 06:23:09,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:09,009 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:23:09,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 06:23:09,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 06:23:09,210 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:09,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1286776264, now seen corresponding path program 1 times [2024-12-02 06:23:09,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947298963] [2024-12-02 06:23:09,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:09,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947298963] [2024-12-02 06:23:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947298963] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:23:09,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:23:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:23:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904881155] [2024-12-02 06:23:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:23:09,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:23:09,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:09,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:23:09,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:23:09,302 INFO L87 Difference]: Start difference. First operand 11325 states and 14837 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:15,091 INFO L93 Difference]: Finished difference Result 15082 states and 21835 transitions. [2024-12-02 06:23:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:23:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-12-02 06:23:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:15,099 INFO L225 Difference]: With dead ends: 15082 [2024-12-02 06:23:15,100 INFO L226 Difference]: Without dead ends: 13578 [2024-12-02 06:23:15,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:23:15,105 INFO L435 NwaCegarLoop]: 764 mSDtfsCounter, 2289 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4788 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 5967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:15,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2289 Valid, 784 Invalid, 5967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4788 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-12-02 06:23:15,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13578 states. [2024-12-02 06:23:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13578 to 13578. [2024-12-02 06:23:15,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13578 states, 13576 states have (on average 1.283588685916323) internal successors, (17426), 13577 states have internal predecessors, (17426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:15,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13578 states to 13578 states and 17426 transitions. [2024-12-02 06:23:15,701 INFO L78 Accepts]: Start accepts. Automaton has 13578 states and 17426 transitions. Word has length 80 [2024-12-02 06:23:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:15,701 INFO L471 AbstractCegarLoop]: Abstraction has 13578 states and 17426 transitions. [2024-12-02 06:23:15,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 13578 states and 17426 transitions. [2024-12-02 06:23:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-12-02 06:23:15,704 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:15,704 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:23:15,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 06:23:15,704 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:15,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash 952901949, now seen corresponding path program 1 times [2024-12-02 06:23:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:15,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128053342] [2024-12-02 06:23:15,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 39 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128053342] [2024-12-02 06:23:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128053342] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:23:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97642974] [2024-12-02 06:23:16,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:16,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:23:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:23:16,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:23:16,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 06:23:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:16,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 06:23:16,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:23:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 34 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:17,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:23:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 31 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:19,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97642974] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:23:19,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:23:19,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2024-12-02 06:23:19,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411986193] [2024-12-02 06:23:19,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:23:19,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 06:23:19,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:19,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 06:23:19,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:23:19,426 INFO L87 Difference]: Start difference. First operand 13578 states and 17426 transitions. Second operand has 35 states, 35 states have (on average 7.914285714285715) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:23:27,328 INFO L93 Difference]: Finished difference Result 28327 states and 35551 transitions. [2024-12-02 06:23:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-12-02 06:23:27,329 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.914285714285715) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-12-02 06:23:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:23:27,342 INFO L225 Difference]: With dead ends: 28327 [2024-12-02 06:23:27,342 INFO L226 Difference]: Without dead ends: 19514 [2024-12-02 06:23:27,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5887 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3283, Invalid=16457, Unknown=0, NotChecked=0, Total=19740 [2024-12-02 06:23:27,348 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 25545 mSDsluCounter, 14902 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25545 SdHoareTripleChecker+Valid, 16462 SdHoareTripleChecker+Invalid, 1850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:23:27,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25545 Valid, 16462 Invalid, 1850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 06:23:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19514 states. [2024-12-02 06:23:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19514 to 17134. [2024-12-02 06:23:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17134 states, 17132 states have (on average 1.2554868083119308) internal successors, (21509), 17133 states have internal predecessors, (21509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17134 states to 17134 states and 21509 transitions. [2024-12-02 06:23:28,194 INFO L78 Accepts]: Start accepts. Automaton has 17134 states and 21509 transitions. Word has length 103 [2024-12-02 06:23:28,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:23:28,195 INFO L471 AbstractCegarLoop]: Abstraction has 17134 states and 21509 transitions. [2024-12-02 06:23:28,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.914285714285715) internal successors, (277), 34 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:23:28,195 INFO L276 IsEmpty]: Start isEmpty. Operand 17134 states and 21509 transitions. [2024-12-02 06:23:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 06:23:28,196 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:23:28,196 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:23:28,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 06:23:28,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:23:28,397 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:23:28,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:23:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1648355578, now seen corresponding path program 1 times [2024-12-02 06:23:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:23:28,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430583991] [2024-12-02 06:23:28,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:28,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:23:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:29,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:23:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430583991] [2024-12-02 06:23:29,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430583991] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:23:29,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943699209] [2024-12-02 06:23:29,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:23:29,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:23:29,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:23:29,653 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:23:29,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 06:23:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:23:29,755 INFO L256 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 06:23:29,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:23:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 25 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:32,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:23:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 16 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:23:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943699209] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:23:38,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:23:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 23] total 68 [2024-12-02 06:23:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207275336] [2024-12-02 06:23:38,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:23:38,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 06:23:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:23:38,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 06:23:38,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=4224, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 06:23:38,817 INFO L87 Difference]: Start difference. First operand 17134 states and 21509 transitions. Second operand has 68 states, 68 states have (on average 4.367647058823529) internal successors, (297), 68 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:26:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:26:52,207 INFO L93 Difference]: Finished difference Result 48808 states and 59684 transitions. [2024-12-02 06:26:52,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 494 states. [2024-12-02 06:26:52,207 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.367647058823529) internal successors, (297), 68 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-12-02 06:26:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:26:52,239 INFO L225 Difference]: With dead ends: 48808 [2024-12-02 06:26:52,239 INFO L226 Difference]: Without dead ends: 40284 [2024-12-02 06:26:52,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132811 ImplicationChecksByTransitivity, 181.4s TimeCoverageRelationStatistics Valid=35947, Invalid=274859, Unknown=0, NotChecked=0, Total=310806 [2024-12-02 06:26:52,256 INFO L435 NwaCegarLoop]: 1849 mSDtfsCounter, 28268 mSDsluCounter, 50359 mSDsCounter, 0 mSdLazyCounter, 11324 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28268 SdHoareTripleChecker+Valid, 52208 SdHoareTripleChecker+Invalid, 11761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 11324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:26:52,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28268 Valid, 52208 Invalid, 11761 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [437 Valid, 11324 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-12-02 06:26:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40284 states. [2024-12-02 06:26:54,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40284 to 28869. [2024-12-02 06:26:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28869 states, 28867 states have (on average 1.2413828939619636) internal successors, (35835), 28868 states have internal predecessors, (35835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:26:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28869 states to 28869 states and 35835 transitions. [2024-12-02 06:26:54,414 INFO L78 Accepts]: Start accepts. Automaton has 28869 states and 35835 transitions. Word has length 104 [2024-12-02 06:26:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:26:54,414 INFO L471 AbstractCegarLoop]: Abstraction has 28869 states and 35835 transitions. [2024-12-02 06:26:54,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.367647058823529) internal successors, (297), 68 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:26:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 28869 states and 35835 transitions. [2024-12-02 06:26:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 06:26:54,416 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:54,416 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:26:54,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 06:26:54,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:26:54,617 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:54,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 852799400, now seen corresponding path program 1 times [2024-12-02 06:26:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:26:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66621342] [2024-12-02 06:26:54,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:26:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:26:55,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:26:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66621342] [2024-12-02 06:26:55,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66621342] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:26:55,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340566663] [2024-12-02 06:26:55,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:55,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:26:55,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:26:55,687 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:26:55,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 06:26:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:55,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-12-02 06:26:55,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:27:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:27:00,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:27:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:27:08,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340566663] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:27:08,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:27:08,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 27] total 72 [2024-12-02 06:27:08,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343923607] [2024-12-02 06:27:08,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:27:08,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-02 06:27:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:27:08,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-02 06:27:08,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=542, Invalid=4570, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 06:27:08,802 INFO L87 Difference]: Start difference. First operand 28869 states and 35835 transitions. Second operand has 72 states, 72 states have (on average 4.097222222222222) internal successors, (295), 72 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:30:25,599 INFO L93 Difference]: Finished difference Result 63256 states and 77575 transitions. [2024-12-02 06:30:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 318 states. [2024-12-02 06:30:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.097222222222222) internal successors, (295), 72 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 06:30:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:30:25,628 INFO L225 Difference]: With dead ends: 63256 [2024-12-02 06:30:25,628 INFO L226 Difference]: Without dead ends: 47451 [2024-12-02 06:30:25,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56347 ImplicationChecksByTransitivity, 188.3s TimeCoverageRelationStatistics Valid=16338, Invalid=126168, Unknown=0, NotChecked=0, Total=142506 [2024-12-02 06:30:25,641 INFO L435 NwaCegarLoop]: 1695 mSDtfsCounter, 28252 mSDsluCounter, 43516 mSDsCounter, 0 mSdLazyCounter, 7128 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28252 SdHoareTripleChecker+Valid, 45211 SdHoareTripleChecker+Invalid, 7477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 7128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:30:25,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28252 Valid, 45211 Invalid, 7477 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [349 Valid, 7128 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-12-02 06:30:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47451 states. [2024-12-02 06:30:28,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47451 to 30066. [2024-12-02 06:30:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30066 states, 30064 states have (on average 1.236728312932411) internal successors, (37181), 30065 states have internal predecessors, (37181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30066 states to 30066 states and 37181 transitions. [2024-12-02 06:30:28,159 INFO L78 Accepts]: Start accepts. Automaton has 30066 states and 37181 transitions. Word has length 106 [2024-12-02 06:30:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:30:28,159 INFO L471 AbstractCegarLoop]: Abstraction has 30066 states and 37181 transitions. [2024-12-02 06:30:28,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.097222222222222) internal successors, (295), 72 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:30:28,159 INFO L276 IsEmpty]: Start isEmpty. Operand 30066 states and 37181 transitions. [2024-12-02 06:30:28,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-12-02 06:30:28,161 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:30:28,161 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:30:28,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 06:30:28,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 06:30:28,361 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:30:28,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:30:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1706401868, now seen corresponding path program 1 times [2024-12-02 06:30:28,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:30:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109462926] [2024-12-02 06:30:28,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:30:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:29,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:30:29,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109462926] [2024-12-02 06:30:29,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109462926] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:30:29,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048207902] [2024-12-02 06:30:29,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:30:29,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:30:29,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:30:29,300 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:30:29,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 06:30:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:30:29,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 06:30:29,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:30:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 40 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:31,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:30:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:30:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048207902] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:30:38,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:30:38,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 23] total 66 [2024-12-02 06:30:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071610565] [2024-12-02 06:30:38,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:30:38,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 06:30:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:30:38,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 06:30:38,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=3818, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:30:38,316 INFO L87 Difference]: Start difference. First operand 30066 states and 37181 transitions. Second operand has 66 states, 66 states have (on average 4.318181818181818) internal successors, (285), 66 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:31:30,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:30,249 INFO L93 Difference]: Finished difference Result 51443 states and 62548 transitions. [2024-12-02 06:31:30,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2024-12-02 06:31:30,250 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 4.318181818181818) internal successors, (285), 66 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-12-02 06:31:30,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:30,279 INFO L225 Difference]: With dead ends: 51443 [2024-12-02 06:31:30,279 INFO L226 Difference]: Without dead ends: 45598 [2024-12-02 06:31:30,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19759 ImplicationChecksByTransitivity, 46.3s TimeCoverageRelationStatistics Valid=9183, Invalid=48657, Unknown=0, NotChecked=0, Total=57840 [2024-12-02 06:31:30,287 INFO L435 NwaCegarLoop]: 1618 mSDtfsCounter, 31852 mSDsluCounter, 31502 mSDsCounter, 0 mSdLazyCounter, 4334 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31852 SdHoareTripleChecker+Valid, 33120 SdHoareTripleChecker+Invalid, 4502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 4334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:30,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31852 Valid, 33120 Invalid, 4502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [168 Valid, 4334 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 06:31:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45598 states. [2024-12-02 06:31:33,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45598 to 33319. [2024-12-02 06:31:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33319 states, 33317 states have (on average 1.2330341867515082) internal successors, (41081), 33318 states have internal predecessors, (41081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:31:33,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33319 states to 33319 states and 41081 transitions. [2024-12-02 06:31:33,321 INFO L78 Accepts]: Start accepts. Automaton has 33319 states and 41081 transitions. Word has length 106 [2024-12-02 06:31:33,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:33,321 INFO L471 AbstractCegarLoop]: Abstraction has 33319 states and 41081 transitions. [2024-12-02 06:31:33,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 4.318181818181818) internal successors, (285), 66 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:31:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 33319 states and 41081 transitions. [2024-12-02 06:31:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-12-02 06:31:33,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:33,323 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:31:33,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 06:31:33,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 06:31:33,523 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:33,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:33,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1413696563, now seen corresponding path program 1 times [2024-12-02 06:31:33,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:31:33,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925753115] [2024-12-02 06:31:33,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:33,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:31:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 41 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:34,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:31:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925753115] [2024-12-02 06:31:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925753115] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:31:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867562595] [2024-12-02 06:31:34,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:31:34,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:31:34,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:31:34,363 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:31:34,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 06:31:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:31:34,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 06:31:34,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 41 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:36,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:31:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 33 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:31:42,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867562595] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:31:42,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:31:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 56 [2024-12-02 06:31:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002460949] [2024-12-02 06:31:42,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:31:42,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-12-02 06:31:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:31:42,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-12-02 06:31:42,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=2722, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 06:31:42,277 INFO L87 Difference]: Start difference. First operand 33319 states and 41081 transitions. Second operand has 56 states, 56 states have (on average 5.214285714285714) internal successors, (292), 56 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:32:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:32:01,911 INFO L93 Difference]: Finished difference Result 58776 states and 72374 transitions. [2024-12-02 06:32:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-12-02 06:32:01,911 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.214285714285714) internal successors, (292), 56 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-12-02 06:32:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:32:01,946 INFO L225 Difference]: With dead ends: 58776 [2024-12-02 06:32:01,946 INFO L226 Difference]: Without dead ends: 50815 [2024-12-02 06:32:01,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5064 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=3871, Invalid=14489, Unknown=0, NotChecked=0, Total=18360 [2024-12-02 06:32:01,954 INFO L435 NwaCegarLoop]: 1571 mSDtfsCounter, 20572 mSDsluCounter, 32987 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20572 SdHoareTripleChecker+Valid, 34558 SdHoareTripleChecker+Invalid, 2617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:32:01,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20572 Valid, 34558 Invalid, 2617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 06:32:01,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50815 states. [2024-12-02 06:32:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50815 to 48011. [2024-12-02 06:32:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48011 states, 48009 states have (on average 1.22754066945781) internal successors, (58933), 48010 states have internal predecessors, (58933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:32:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48011 states to 48011 states and 58933 transitions. [2024-12-02 06:32:06,763 INFO L78 Accepts]: Start accepts. Automaton has 48011 states and 58933 transitions. Word has length 107 [2024-12-02 06:32:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:32:06,763 INFO L471 AbstractCegarLoop]: Abstraction has 48011 states and 58933 transitions. [2024-12-02 06:32:06,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.214285714285714) internal successors, (292), 56 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:32:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 48011 states and 58933 transitions. [2024-12-02 06:32:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-12-02 06:32:06,764 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:32:06,764 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:32:06,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 06:32:06,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 06:32:06,965 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:32:06,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:32:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1776170548, now seen corresponding path program 1 times [2024-12-02 06:32:06,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:32:06,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745030279] [2024-12-02 06:32:06,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:06,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:32:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:32:08,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:32:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745030279] [2024-12-02 06:32:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745030279] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:32:08,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170186337] [2024-12-02 06:32:08,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:32:08,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:32:08,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:32:08,531 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:32:08,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73515489-ebe4-4d06-922d-ff8fbdcf4de3/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 06:32:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:32:08,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-12-02 06:32:08,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:32:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 42 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:32:10,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:32:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:32:15,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170186337] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:32:15,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:32:15,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 23] total 66 [2024-12-02 06:32:15,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255468844] [2024-12-02 06:32:15,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:32:15,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-02 06:32:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:32:15,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-02 06:32:15,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=3930, Unknown=0, NotChecked=0, Total=4290 [2024-12-02 06:32:15,981 INFO L87 Difference]: Start difference. First operand 48011 states and 58933 transitions. Second operand has 66 states, 66 states have (on average 4.075757575757576) internal successors, (269), 66 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)