./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/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_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/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_1efac672-fdc0-458b-af4b-2b279e80cf11/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 21bdbc3e0ac2e83aebdf4ed5d685b5451eeeab46fc8ce4a523557df5ff3c8a1c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 13:06:43,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 13:06:43,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 13:06:43,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 13:06:43,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 13:06:43,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 13:06:43,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 13:06:43,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 13:06:43,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 13:06:43,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 13:06:43,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 13:06:43,363 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 13:06:43,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 13:06:43,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 13:06:43,364 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 13:06:43,364 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 13:06:43,365 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:06:43,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 13:06:43,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:06:43,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 13:06:43,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 13:06:43,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 13:06:43,367 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_1efac672-fdc0-458b-af4b-2b279e80cf11/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 -> 21bdbc3e0ac2e83aebdf4ed5d685b5451eeeab46fc8ce4a523557df5ff3c8a1c [2024-12-02 13:06:43,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 13:06:43,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 13:06:43,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 13:06:43,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 13:06:43,598 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 13:06:43,599 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2024-12-02 13:06:46,247 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/data/42e167523/35c86b78d2834a30acb91d752227c2c8/FLAGf9cdce65e [2024-12-02 13:06:46,491 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 13:06:46,491 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2024-12-02 13:06:46,501 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/data/42e167523/35c86b78d2834a30acb91d752227c2c8/FLAGf9cdce65e [2024-12-02 13:06:46,515 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/data/42e167523/35c86b78d2834a30acb91d752227c2c8 [2024-12-02 13:06:46,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 13:06:46,519 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 13:06:46,520 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 13:06:46,520 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 13:06:46,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 13:06:46,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761084a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46, skipping insertion in model container [2024-12-02 13:06:46,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 13:06:46,683 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_1efac672-fdc0-458b-af4b-2b279e80cf11/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i[915,928] [2024-12-02 13:06:46,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:06:46,795 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 13:06:46,805 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_1efac672-fdc0-458b-af4b-2b279e80cf11/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-5.i[915,928] [2024-12-02 13:06:46,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 13:06:46,875 INFO L204 MainTranslator]: Completed translation [2024-12-02 13:06:46,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46 WrapperNode [2024-12-02 13:06:46,876 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 13:06:46,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 13:06:46,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 13:06:46,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 13:06:46,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,944 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 492 [2024-12-02 13:06:46,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 13:06:46,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 13:06:46,945 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 13:06:46,945 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 13:06:46,954 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,985 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 13:06:46,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:46,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,003 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 13:06:47,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 13:06:47,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 13:06:47,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 13:06:47,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (1/1) ... [2024-12-02 13:06:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 13:06:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:06:47,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 13:06:47,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 13:06:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 13:06:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 13:06:47,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 13:06:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 13:06:47,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 13:06:47,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 13:06:47,189 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 13:06:47,190 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 13:06:47,847 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-12-02 13:06:47,847 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 13:06:47,860 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 13:06:47,860 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 13:06:47,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:06:47 BoogieIcfgContainer [2024-12-02 13:06:47,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 13:06:47,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 13:06:47,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 13:06:47,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 13:06:47,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:06:46" (1/3) ... [2024-12-02 13:06:47,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:06:47, skipping insertion in model container [2024-12-02 13:06:47,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:06:46" (2/3) ... [2024-12-02 13:06:47,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5e0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:06:47, skipping insertion in model container [2024-12-02 13:06:47,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:06:47" (3/3) ... [2024-12-02 13:06:47,868 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-5.i [2024-12-02 13:06:47,878 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 13:06:47,880 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-5.i that has 2 procedures, 207 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 13:06:47,926 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 13:06:47,935 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;@19a5ff7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 13:06:47,936 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 13:06:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 138 states have internal predecessors, (209), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-12-02 13:06:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 13:06:47,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:06:47,958 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:47,958 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:06:47,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:06:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 15854637, now seen corresponding path program 1 times [2024-12-02 13:06:47,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:06:47,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806252786] [2024-12-02 13:06:47,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:06:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-12-02 13:06:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:06:48,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806252786] [2024-12-02 13:06:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806252786] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:06:48,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077089481] [2024-12-02 13:06:48,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:48,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:06:48,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:06:48,427 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:06:48,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 13:06:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:48,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 13:06:48,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:06:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-12-02 13:06:48,781 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 13:06:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077089481] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:06:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 13:06:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 13:06:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144793110] [2024-12-02 13:06:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:06:48,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 13:06:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:06:48,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 13:06:48,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:06:48,807 INFO L87 Difference]: Start difference. First operand has 207 states, 137 states have (on average 1.5255474452554745) internal successors, (209), 138 states have internal predecessors, (209), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:06:48,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:06:48,856 INFO L93 Difference]: Finished difference Result 407 states and 747 transitions. [2024-12-02 13:06:48,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 13:06:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 431 [2024-12-02 13:06:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:06:48,865 INFO L225 Difference]: With dead ends: 407 [2024-12-02 13:06:48,865 INFO L226 Difference]: Without dead ends: 203 [2024-12-02 13:06:48,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 13:06:48,872 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 13:06:48,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 13:06:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-12-02 13:06:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-12-02 13:06:48,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 134 states have (on average 1.492537313432836) internal successors, (200), 134 states have internal predecessors, (200), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-12-02 13:06:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 334 transitions. [2024-12-02 13:06:48,929 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 334 transitions. Word has length 431 [2024-12-02 13:06:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:06:48,929 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 334 transitions. [2024-12-02 13:06:48,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:06:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 334 transitions. [2024-12-02 13:06:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 13:06:48,941 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:06:48,942 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:48,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 13:06:49,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:06:49,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:06:49,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:06:49,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1547106365, now seen corresponding path program 1 times [2024-12-02 13:06:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:06:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538484291] [2024-12-02 13:06:49,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:06:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:06:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:06:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:06:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:06:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538484291] [2024-12-02 13:06:54,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538484291] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:06:54,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:06:54,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 13:06:54,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051639667] [2024-12-02 13:06:54,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:06:54,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 13:06:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:06:54,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 13:06:54,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-12-02 13:06:54,977 INFO L87 Difference]: Start difference. First operand 203 states and 334 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:07:01,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:01,381 INFO L93 Difference]: Finished difference Result 1578 states and 2600 transitions. [2024-12-02 13:07:01,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 13:07:01,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 431 [2024-12-02 13:07:01,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:01,387 INFO L225 Difference]: With dead ends: 1578 [2024-12-02 13:07:01,387 INFO L226 Difference]: Without dead ends: 1378 [2024-12-02 13:07:01,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 13:07:01,389 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 3185 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:01,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3185 Valid, 3480 Invalid, 3316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-12-02 13:07:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-12-02 13:07:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 363. [2024-12-02 13:07:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 278 states have (on average 1.618705035971223) internal successors, (450), 279 states have internal predecessors, (450), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2024-12-02 13:07:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 614 transitions. [2024-12-02 13:07:01,470 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 614 transitions. Word has length 431 [2024-12-02 13:07:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:01,472 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 614 transitions. [2024-12-02 13:07:01,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:07:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 614 transitions. [2024-12-02 13:07:01,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 13:07:01,476 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:01,477 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:01,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 13:07:01,477 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:01,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash 258331969, now seen corresponding path program 1 times [2024-12-02 13:07:01,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:01,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241861378] [2024-12-02 13:07:01,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:07:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241861378] [2024-12-02 13:07:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241861378] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:12,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:12,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:07:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336042392] [2024-12-02 13:07:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:12,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:07:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:12,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:07:12,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:07:12,063 INFO L87 Difference]: Start difference. First operand 363 states and 614 transitions. Second operand has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-12-02 13:07:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:27,969 INFO L93 Difference]: Finished difference Result 2799 states and 4681 transitions. [2024-12-02 13:07:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 13:07:27,970 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 431 [2024-12-02 13:07:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:27,984 INFO L225 Difference]: With dead ends: 2799 [2024-12-02 13:07:27,984 INFO L226 Difference]: Without dead ends: 2436 [2024-12-02 13:07:27,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=383, Invalid=1023, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 13:07:27,987 INFO L435 NwaCegarLoop]: 420 mSDtfsCounter, 5255 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 2985 mSolverCounterSat, 1473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5255 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 4458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1473 IncrementalHoareTripleChecker+Valid, 2985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:27,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5255 Valid, 2768 Invalid, 4458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1473 Valid, 2985 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-12-02 13:07:27,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2024-12-02 13:07:28,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 662. [2024-12-02 13:07:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 523 states have (on average 1.6806883365200764) internal successors, (879), 523 states have internal predecessors, (879), 134 states have call successors, (134), 4 states have call predecessors, (134), 4 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-12-02 13:07:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1147 transitions. [2024-12-02 13:07:28,138 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1147 transitions. Word has length 431 [2024-12-02 13:07:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:28,139 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 1147 transitions. [2024-12-02 13:07:28,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 17 states have internal predecessors, (99), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-12-02 13:07:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1147 transitions. [2024-12-02 13:07:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 13:07:28,143 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:28,144 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:28,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 13:07:28,144 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:28,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash 124318463, now seen corresponding path program 1 times [2024-12-02 13:07:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073590538] [2024-12-02 13:07:28,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:07:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073590538] [2024-12-02 13:07:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073590538] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:29,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 13:07:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012357406] [2024-12-02 13:07:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:29,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 13:07:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:29,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 13:07:29,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 13:07:29,385 INFO L87 Difference]: Start difference. First operand 662 states and 1147 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:07:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:32,802 INFO L93 Difference]: Finished difference Result 4007 states and 6776 transitions. [2024-12-02 13:07:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 13:07:32,802 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 431 [2024-12-02 13:07:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:32,813 INFO L225 Difference]: With dead ends: 4007 [2024-12-02 13:07:32,813 INFO L226 Difference]: Without dead ends: 3348 [2024-12-02 13:07:32,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:07:32,817 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 2587 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 784 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 784 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:32,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 2571 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [784 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 13:07:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2024-12-02 13:07:33,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 2599. [2024-12-02 13:07:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2084 states have (on average 1.6660268714011517) internal successors, (3472), 2088 states have internal predecessors, (3472), 494 states have call successors, (494), 20 states have call predecessors, (494), 20 states have return successors, (494), 490 states have call predecessors, (494), 494 states have call successors, (494) [2024-12-02 13:07:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 4460 transitions. [2024-12-02 13:07:33,300 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 4460 transitions. Word has length 431 [2024-12-02 13:07:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:33,301 INFO L471 AbstractCegarLoop]: Abstraction has 2599 states and 4460 transitions. [2024-12-02 13:07:33,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:07:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 4460 transitions. [2024-12-02 13:07:33,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 13:07:33,304 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:33,304 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:33,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 13:07:33,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:33,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:33,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1273720321, now seen corresponding path program 1 times [2024-12-02 13:07:33,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:33,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827944294] [2024-12-02 13:07:33,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:07:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827944294] [2024-12-02 13:07:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827944294] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:07:39,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:07:39,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 13:07:39,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654308299] [2024-12-02 13:07:39,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:07:39,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 13:07:39,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:39,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 13:07:39,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:07:39,994 INFO L87 Difference]: Start difference. First operand 2599 states and 4460 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:07:53,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:53,565 INFO L93 Difference]: Finished difference Result 11363 states and 19349 transitions. [2024-12-02 13:07:53,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 13:07:53,566 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 431 [2024-12-02 13:07:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:53,586 INFO L225 Difference]: With dead ends: 11363 [2024-12-02 13:07:53,586 INFO L226 Difference]: Without dead ends: 8767 [2024-12-02 13:07:53,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-12-02 13:07:53,591 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 1749 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 3106 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1749 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 3536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 3106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:53,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1749 Valid, 2775 Invalid, 3536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 3106 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-12-02 13:07:53,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2024-12-02 13:07:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 3923. [2024-12-02 13:07:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3923 states, 3178 states have (on average 1.657960981749528) internal successors, (5269), 3190 states have internal predecessors, (5269), 702 states have call successors, (702), 42 states have call predecessors, (702), 42 states have return successors, (702), 690 states have call predecessors, (702), 702 states have call successors, (702) [2024-12-02 13:07:54,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3923 states to 3923 states and 6673 transitions. [2024-12-02 13:07:54,528 INFO L78 Accepts]: Start accepts. Automaton has 3923 states and 6673 transitions. Word has length 431 [2024-12-02 13:07:54,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:54,530 INFO L471 AbstractCegarLoop]: Abstraction has 3923 states and 6673 transitions. [2024-12-02 13:07:54,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:07:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 3923 states and 6673 transitions. [2024-12-02 13:07:54,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 13:07:54,537 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:54,537 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:54,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 13:07:54,538 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:54,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:54,539 INFO L85 PathProgramCache]: Analyzing trace with hash -850073599, now seen corresponding path program 1 times [2024-12-02 13:07:54,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:54,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777025594] [2024-12-02 13:07:54,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:54,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 156 proven. 42 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 13:07:54,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:07:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777025594] [2024-12-02 13:07:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777025594] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:07:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612606946] [2024-12-02 13:07:54,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:54,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:54,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:07:54,938 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:07:54,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 13:07:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:07:55,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 13:07:55,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:07:55,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4723 proven. 117 refuted. 0 times theorem prover too weak. 4004 trivial. 0 not checked. [2024-12-02 13:07:55,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:07:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 81 proven. 117 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 13:07:56,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612606946] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:07:56,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:07:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 10, 10] total 21 [2024-12-02 13:07:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086058616] [2024-12-02 13:07:56,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:07:56,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 13:07:56,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:07:56,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 13:07:56,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-12-02 13:07:56,517 INFO L87 Difference]: Start difference. First operand 3923 states and 6673 transitions. Second operand has 21 states, 21 states have (on average 10.571428571428571) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (155), 3 states have call predecessors, (155), 6 states have return successors, (155), 6 states have call predecessors, (155), 6 states have call successors, (155) [2024-12-02 13:07:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:07:58,592 INFO L93 Difference]: Finished difference Result 7392 states and 12447 transitions. [2024-12-02 13:07:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 13:07:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.571428571428571) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (155), 3 states have call predecessors, (155), 6 states have return successors, (155), 6 states have call predecessors, (155), 6 states have call successors, (155) Word has length 431 [2024-12-02 13:07:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:07:58,603 INFO L225 Difference]: With dead ends: 7392 [2024-12-02 13:07:58,603 INFO L226 Difference]: Without dead ends: 3472 [2024-12-02 13:07:58,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 13:07:58,607 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 1844 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 13:07:58,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1844 Valid, 1965 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 13:07:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2024-12-02 13:07:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 2689. [2024-12-02 13:07:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 1982 states have (on average 1.5005045408678104) internal successors, (2974), 1992 states have internal predecessors, (2974), 656 states have call successors, (656), 50 states have call predecessors, (656), 50 states have return successors, (656), 646 states have call predecessors, (656), 656 states have call successors, (656) [2024-12-02 13:07:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4286 transitions. [2024-12-02 13:07:59,446 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4286 transitions. Word has length 431 [2024-12-02 13:07:59,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:07:59,447 INFO L471 AbstractCegarLoop]: Abstraction has 2689 states and 4286 transitions. [2024-12-02 13:07:59,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.571428571428571) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (155), 3 states have call predecessors, (155), 6 states have return successors, (155), 6 states have call predecessors, (155), 6 states have call successors, (155) [2024-12-02 13:07:59,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4286 transitions. [2024-12-02 13:07:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:07:59,449 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:07:59,449 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:59,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 13:07:59,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:07:59,650 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:07:59,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:07:59,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1813396815, now seen corresponding path program 1 times [2024-12-02 13:07:59,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:07:59,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850863580] [2024-12-02 13:07:59,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:07:59,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:07:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:08:20,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:08:20,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:08:20,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850863580] [2024-12-02 13:08:20,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850863580] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:08:20,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:08:20,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 13:08:20,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246899965] [2024-12-02 13:08:20,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:08:20,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 13:08:20,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:08:20,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 13:08:20,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-12-02 13:08:20,703 INFO L87 Difference]: Start difference. First operand 2689 states and 4286 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:08:36,682 WARN L286 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 238 DAG size of output: 140 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:09:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:09:23,624 INFO L93 Difference]: Finished difference Result 14045 states and 21946 transitions. [2024-12-02 13:09:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 13:09:23,625 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 432 [2024-12-02 13:09:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:09:23,667 INFO L225 Difference]: With dead ends: 14045 [2024-12-02 13:09:23,668 INFO L226 Difference]: Without dead ends: 11359 [2024-12-02 13:09:23,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:09:23,676 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 4108 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 1554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 4978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:09:23,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4108 Valid, 3369 Invalid, 4978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1554 Valid, 3424 Invalid, 0 Unknown, 0 Unchecked, 34.3s Time] [2024-12-02 13:09:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11359 states. [2024-12-02 13:09:24,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11359 to 3905. [2024-12-02 13:09:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3035 states have (on average 1.543657331136738) internal successors, (4685), 3052 states have internal predecessors, (4685), 805 states have call successors, (805), 64 states have call predecessors, (805), 64 states have return successors, (805), 788 states have call predecessors, (805), 805 states have call successors, (805) [2024-12-02 13:09:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 6295 transitions. [2024-12-02 13:09:25,003 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 6295 transitions. Word has length 432 [2024-12-02 13:09:25,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:09:25,004 INFO L471 AbstractCegarLoop]: Abstraction has 3905 states and 6295 transitions. [2024-12-02 13:09:25,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:09:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 6295 transitions. [2024-12-02 13:09:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:09:25,009 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:09:25,009 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:09:25,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 13:09:25,009 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:09:25,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:09:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1947410321, now seen corresponding path program 1 times [2024-12-02 13:09:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:09:25,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374190855] [2024-12-02 13:09:25,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:09:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:09:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:09:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:09:32,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:09:32,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374190855] [2024-12-02 13:09:32,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374190855] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:09:32,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:09:32,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 13:09:32,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442047341] [2024-12-02 13:09:32,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:09:32,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:09:32,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:09:32,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:09:32,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-12-02 13:09:32,223 INFO L87 Difference]: Start difference. First operand 3905 states and 6295 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-12-02 13:10:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:10:05,877 INFO L93 Difference]: Finished difference Result 25644 states and 40643 transitions. [2024-12-02 13:10:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-12-02 13:10:05,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 432 [2024-12-02 13:10:05,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:10:05,950 INFO L225 Difference]: With dead ends: 25644 [2024-12-02 13:10:05,950 INFO L226 Difference]: Without dead ends: 21736 [2024-12-02 13:10:05,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 13:10:05,962 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 7318 mSDsluCounter, 3347 mSDsCounter, 0 mSdLazyCounter, 3357 mSolverCounterSat, 2062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7318 SdHoareTripleChecker+Valid, 3671 SdHoareTripleChecker+Invalid, 5419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2062 IncrementalHoareTripleChecker+Valid, 3357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:10:05,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7318 Valid, 3671 Invalid, 5419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2062 Valid, 3357 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2024-12-02 13:10:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21736 states. [2024-12-02 13:10:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21736 to 6335. [2024-12-02 13:10:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6335 states, 5465 states have (on average 1.632021957913998) internal successors, (8919), 5482 states have internal predecessors, (8919), 805 states have call successors, (805), 64 states have call predecessors, (805), 64 states have return successors, (805), 788 states have call predecessors, (805), 805 states have call successors, (805) [2024-12-02 13:10:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6335 states to 6335 states and 10529 transitions. [2024-12-02 13:10:07,692 INFO L78 Accepts]: Start accepts. Automaton has 6335 states and 10529 transitions. Word has length 432 [2024-12-02 13:10:07,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:10:07,692 INFO L471 AbstractCegarLoop]: Abstraction has 6335 states and 10529 transitions. [2024-12-02 13:10:07,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-12-02 13:10:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6335 states and 10529 transitions. [2024-12-02 13:10:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:10:07,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:10:07,697 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:07,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 13:10:07,697 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:10:07,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:10:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash -141971987, now seen corresponding path program 1 times [2024-12-02 13:10:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:10:07,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090195722] [2024-12-02 13:10:07,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:07,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:10:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:10:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:10:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090195722] [2024-12-02 13:10:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090195722] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:10:09,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:10:09,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 13:10:09,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76405790] [2024-12-02 13:10:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:10:09,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 13:10:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:10:09,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 13:10:09,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 13:10:09,263 INFO L87 Difference]: Start difference. First operand 6335 states and 10529 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:10:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:10:19,443 INFO L93 Difference]: Finished difference Result 24686 states and 40418 transitions. [2024-12-02 13:10:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 13:10:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 432 [2024-12-02 13:10:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:10:19,476 INFO L225 Difference]: With dead ends: 24686 [2024-12-02 13:10:19,476 INFO L226 Difference]: Without dead ends: 18294 [2024-12-02 13:10:19,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-12-02 13:10:19,484 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 1702 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:10:19,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 1231 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 13:10:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18294 states. [2024-12-02 13:10:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18294 to 7893. [2024-12-02 13:10:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7893 states, 6998 states have (on average 1.660474421263218) internal successors, (11620), 7016 states have internal predecessors, (11620), 828 states have call successors, (828), 66 states have call predecessors, (828), 66 states have return successors, (828), 810 states have call predecessors, (828), 828 states have call successors, (828) [2024-12-02 13:10:21,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7893 states to 7893 states and 13276 transitions. [2024-12-02 13:10:21,089 INFO L78 Accepts]: Start accepts. Automaton has 7893 states and 13276 transitions. Word has length 432 [2024-12-02 13:10:21,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:10:21,090 INFO L471 AbstractCegarLoop]: Abstraction has 7893 states and 13276 transitions. [2024-12-02 13:10:21,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 13:10:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7893 states and 13276 transitions. [2024-12-02 13:10:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:10:21,094 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:10:21,094 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:10:21,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 13:10:21,095 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:10:21,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:10:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1790764561, now seen corresponding path program 1 times [2024-12-02 13:10:21,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:10:21,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462866573] [2024-12-02 13:10:21,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:10:21,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:10:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:10:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:10:52,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:10:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462866573] [2024-12-02 13:10:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462866573] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:10:52,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:10:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-12-02 13:10:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546888411] [2024-12-02 13:10:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:10:52,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 13:10:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:10:52,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 13:10:52,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-12-02 13:10:52,720 INFO L87 Difference]: Start difference. First operand 7893 states and 13276 transitions. Second operand has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 4 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2024-12-02 13:13:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:13:46,692 INFO L93 Difference]: Finished difference Result 44957 states and 74237 transitions. [2024-12-02 13:13:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-12-02 13:13:46,692 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 4 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 432 [2024-12-02 13:13:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:13:46,753 INFO L225 Difference]: With dead ends: 44957 [2024-12-02 13:13:46,753 INFO L226 Difference]: Without dead ends: 37061 [2024-12-02 13:13:46,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 91.3s TimeCoverageRelationStatistics Valid=2374, Invalid=6182, Unknown=0, NotChecked=0, Total=8556 [2024-12-02 13:13:46,767 INFO L435 NwaCegarLoop]: 376 mSDtfsCounter, 12851 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 4345 mSolverCounterSat, 3795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12851 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 8140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3795 IncrementalHoareTripleChecker+Valid, 4345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.5s IncrementalHoareTripleChecker+Time [2024-12-02 13:13:46,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12851 Valid, 4088 Invalid, 8140 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3795 Valid, 4345 Invalid, 0 Unknown, 0 Unchecked, 69.5s Time] [2024-12-02 13:13:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37061 states. [2024-12-02 13:13:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37061 to 10233. [2024-12-02 13:13:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10233 states, 9269 states have (on average 1.6737512137231632) internal successors, (15514), 9290 states have internal predecessors, (15514), 891 states have call successors, (891), 72 states have call predecessors, (891), 72 states have return successors, (891), 870 states have call predecessors, (891), 891 states have call successors, (891) [2024-12-02 13:13:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10233 states to 10233 states and 17296 transitions. [2024-12-02 13:13:49,312 INFO L78 Accepts]: Start accepts. Automaton has 10233 states and 17296 transitions. Word has length 432 [2024-12-02 13:13:49,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:13:49,313 INFO L471 AbstractCegarLoop]: Abstraction has 10233 states and 17296 transitions. [2024-12-02 13:13:49,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.545454545454546) internal successors, (100), 22 states have internal predecessors, (100), 4 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2024-12-02 13:13:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 10233 states and 17296 transitions. [2024-12-02 13:13:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:13:49,318 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:13:49,318 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:13:49,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 13:13:49,318 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:13:49,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:13:49,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1924778067, now seen corresponding path program 1 times [2024-12-02 13:13:49,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:13:49,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479103546] [2024-12-02 13:13:49,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:13:49,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:13:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:14:16,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:14:16,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:14:16,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479103546] [2024-12-02 13:14:16,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479103546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:14:16,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:14:16,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 13:14:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966006159] [2024-12-02 13:14:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:14:16,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 13:14:16,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:14:16,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 13:14:16,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=295, Unknown=1, NotChecked=0, Total=342 [2024-12-02 13:14:16,500 INFO L87 Difference]: Start difference. First operand 10233 states and 17296 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2024-12-02 13:14:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:14:59,682 INFO L93 Difference]: Finished difference Result 42971 states and 71613 transitions. [2024-12-02 13:14:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 13:14:59,683 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 432 [2024-12-02 13:14:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:14:59,721 INFO L225 Difference]: With dead ends: 42971 [2024-12-02 13:14:59,721 INFO L226 Difference]: Without dead ends: 32663 [2024-12-02 13:14:59,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=695, Invalid=1754, Unknown=1, NotChecked=0, Total=2450 [2024-12-02 13:14:59,733 INFO L435 NwaCegarLoop]: 662 mSDtfsCounter, 6469 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 3840 mSolverCounterSat, 1197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6469 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 5037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 3840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:14:59,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6469 Valid, 3960 Invalid, 5037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1197 Valid, 3840 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2024-12-02 13:14:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32663 states. [2024-12-02 13:15:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32663 to 10406. [2024-12-02 13:15:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10406 states, 9442 states have (on average 1.6745392925227707) internal successors, (15811), 9463 states have internal predecessors, (15811), 891 states have call successors, (891), 72 states have call predecessors, (891), 72 states have return successors, (891), 870 states have call predecessors, (891), 891 states have call successors, (891) [2024-12-02 13:15:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10406 states to 10406 states and 17593 transitions. [2024-12-02 13:15:02,002 INFO L78 Accepts]: Start accepts. Automaton has 10406 states and 17593 transitions. Word has length 432 [2024-12-02 13:15:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:02,003 INFO L471 AbstractCegarLoop]: Abstraction has 10406 states and 17593 transitions. [2024-12-02 13:15:02,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 4 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2024-12-02 13:15:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10406 states and 17593 transitions. [2024-12-02 13:15:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:15:02,007 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:02,008 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:02,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 13:15:02,008 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:02,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:02,008 INFO L85 PathProgramCache]: Analyzing trace with hash -532029027, now seen corresponding path program 1 times [2024-12-02 13:15:02,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:02,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201099007] [2024-12-02 13:15:02,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:02,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:15:09,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:09,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201099007] [2024-12-02 13:15:09,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201099007] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:09,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:09,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 13:15:09,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905979194] [2024-12-02 13:15:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:09,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 13:15:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:09,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 13:15:09,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-12-02 13:15:09,282 INFO L87 Difference]: Start difference. First operand 10406 states and 17593 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 13:15:31,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:15:31,726 INFO L93 Difference]: Finished difference Result 36480 states and 61133 transitions. [2024-12-02 13:15:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 13:15:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 432 [2024-12-02 13:15:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:15:31,757 INFO L225 Difference]: With dead ends: 36480 [2024-12-02 13:15:31,757 INFO L226 Difference]: Without dead ends: 25586 [2024-12-02 13:15:31,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-12-02 13:15:31,768 INFO L435 NwaCegarLoop]: 451 mSDtfsCounter, 941 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2024-12-02 13:15:31,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 2226 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2024-12-02 13:15:31,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25586 states. [2024-12-02 13:15:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25586 to 11264. [2024-12-02 13:15:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11264 states, 10248 states have (on average 1.6804254488680719) internal successors, (17221), 10271 states have internal predecessors, (17221), 937 states have call successors, (937), 78 states have call predecessors, (937), 78 states have return successors, (937), 914 states have call predecessors, (937), 937 states have call successors, (937) [2024-12-02 13:15:34,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11264 states to 11264 states and 19095 transitions. [2024-12-02 13:15:34,291 INFO L78 Accepts]: Start accepts. Automaton has 11264 states and 19095 transitions. Word has length 432 [2024-12-02 13:15:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:15:34,291 INFO L471 AbstractCegarLoop]: Abstraction has 11264 states and 19095 transitions. [2024-12-02 13:15:34,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 11 states have internal predecessors, (100), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 13:15:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 11264 states and 19095 transitions. [2024-12-02 13:15:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:15:34,296 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:15:34,296 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:15:34,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 13:15:34,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:15:34,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:15:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 240188013, now seen corresponding path program 1 times [2024-12-02 13:15:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:15:34,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266510126] [2024-12-02 13:15:34,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:15:34,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:15:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:15:40,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:15:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:15:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266510126] [2024-12-02 13:15:40,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266510126] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:15:40,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:15:40,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 13:15:40,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94035164] [2024-12-02 13:15:40,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:15:40,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 13:15:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:15:40,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 13:15:40,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-12-02 13:15:40,721 INFO L87 Difference]: Start difference. First operand 11264 states and 19095 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-12-02 13:16:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:13,929 INFO L93 Difference]: Finished difference Result 33152 states and 55431 transitions. [2024-12-02 13:16:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 13:16:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 432 [2024-12-02 13:16:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:13,954 INFO L225 Difference]: With dead ends: 33152 [2024-12-02 13:16:13,955 INFO L226 Difference]: Without dead ends: 21887 [2024-12-02 13:16:13,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=354, Invalid=836, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 13:16:13,963 INFO L435 NwaCegarLoop]: 419 mSDtfsCounter, 2978 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2978 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 3776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:13,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2978 Valid, 3108 Invalid, 3776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2024-12-02 13:16:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21887 states. [2024-12-02 13:16:16,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21887 to 11832. [2024-12-02 13:16:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11832 states, 10790 states have (on average 1.6826691380908247) internal successors, (18156), 10814 states have internal predecessors, (18156), 960 states have call successors, (960), 81 states have call predecessors, (960), 81 states have return successors, (960), 936 states have call predecessors, (960), 960 states have call successors, (960) [2024-12-02 13:16:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11832 states to 11832 states and 20076 transitions. [2024-12-02 13:16:16,704 INFO L78 Accepts]: Start accepts. Automaton has 11832 states and 20076 transitions. Word has length 432 [2024-12-02 13:16:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:16,704 INFO L471 AbstractCegarLoop]: Abstraction has 11832 states and 20076 transitions. [2024-12-02 13:16:16,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 3 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2024-12-02 13:16:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 11832 states and 20076 transitions. [2024-12-02 13:16:16,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:16:16,709 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:16,709 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:16,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 13:16:16,709 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:16,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:16,710 INFO L85 PathProgramCache]: Analyzing trace with hash 106174507, now seen corresponding path program 1 times [2024-12-02 13:16:16,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:16,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453624450] [2024-12-02 13:16:16,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:16,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 81 proven. 117 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 13:16:18,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453624450] [2024-12-02 13:16:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453624450] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 13:16:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592048350] [2024-12-02 13:16:18,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:18,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 13:16:18,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 13:16:18,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 13:16:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:18,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 13:16:18,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 13:16:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4610 proven. 243 refuted. 0 times theorem prover too weak. 3991 trivial. 0 not checked. [2024-12-02 13:16:19,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 13:16:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 81 proven. 117 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 13:16:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592048350] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 13:16:21,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 13:16:21,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 37 [2024-12-02 13:16:21,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006251604] [2024-12-02 13:16:21,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 13:16:21,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-02 13:16:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:21,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-02 13:16:21,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1155, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 13:16:21,232 INFO L87 Difference]: Start difference. First operand 11832 states and 20076 transitions. Second operand has 37 states, 37 states have (on average 6.324324324324325) internal successors, (234), 37 states have internal predecessors, (234), 8 states have call successors, (155), 4 states have call predecessors, (155), 7 states have return successors, (155), 7 states have call predecessors, (155), 8 states have call successors, (155) [2024-12-02 13:16:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:35,040 INFO L93 Difference]: Finished difference Result 29575 states and 49802 transitions. [2024-12-02 13:16:35,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 13:16:35,041 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.324324324324325) internal successors, (234), 37 states have internal predecessors, (234), 8 states have call successors, (155), 4 states have call predecessors, (155), 7 states have return successors, (155), 7 states have call predecessors, (155), 8 states have call successors, (155) Word has length 432 [2024-12-02 13:16:35,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:35,063 INFO L225 Difference]: With dead ends: 29575 [2024-12-02 13:16:35,063 INFO L226 Difference]: Without dead ends: 17763 [2024-12-02 13:16:35,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 851 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1725, Invalid=6285, Unknown=0, NotChecked=0, Total=8010 [2024-12-02 13:16:35,075 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 3053 mSDsluCounter, 3882 mSDsCounter, 0 mSdLazyCounter, 6222 mSolverCounterSat, 1274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3122 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 7496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1274 IncrementalHoareTripleChecker+Valid, 6222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:35,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3122 Valid, 4240 Invalid, 7496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1274 Valid, 6222 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-12-02 13:16:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17763 states. [2024-12-02 13:16:37,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17763 to 11023. [2024-12-02 13:16:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11023 states, 10244 states have (on average 1.6765911753221399) internal successors, (17175), 10258 states have internal predecessors, (17175), 712 states have call successors, (712), 66 states have call predecessors, (712), 66 states have return successors, (712), 698 states have call predecessors, (712), 712 states have call successors, (712) [2024-12-02 13:16:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11023 states to 11023 states and 18599 transitions. [2024-12-02 13:16:37,143 INFO L78 Accepts]: Start accepts. Automaton has 11023 states and 18599 transitions. Word has length 432 [2024-12-02 13:16:37,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:37,144 INFO L471 AbstractCegarLoop]: Abstraction has 11023 states and 18599 transitions. [2024-12-02 13:16:37,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.324324324324325) internal successors, (234), 37 states have internal predecessors, (234), 8 states have call successors, (155), 4 states have call predecessors, (155), 7 states have return successors, (155), 7 states have call predecessors, (155), 8 states have call successors, (155) [2024-12-02 13:16:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11023 states and 18599 transitions. [2024-12-02 13:16:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:16:37,148 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:37,148 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:37,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 13:16:37,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1efac672-fdc0-458b-af4b-2b279e80cf11/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 13:16:37,349 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:37,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash -283882533, now seen corresponding path program 1 times [2024-12-02 13:16:37,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:37,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877008562] [2024-12-02 13:16:37,350 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:37,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:16:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 13:16:37,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 13:16:37,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877008562] [2024-12-02 13:16:37,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877008562] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 13:16:37,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 13:16:37,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 13:16:37,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023730445] [2024-12-02 13:16:37,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 13:16:37,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 13:16:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 13:16:37,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 13:16:37,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 13:16:37,547 INFO L87 Difference]: Start difference. First operand 11023 states and 18599 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 13:16:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 13:16:41,707 INFO L93 Difference]: Finished difference Result 26944 states and 45233 transitions. [2024-12-02 13:16:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 13:16:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 432 [2024-12-02 13:16:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 13:16:41,735 INFO L225 Difference]: With dead ends: 26944 [2024-12-02 13:16:41,735 INFO L226 Difference]: Without dead ends: 15924 [2024-12-02 13:16:41,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 13:16:41,747 INFO L435 NwaCegarLoop]: 416 mSDtfsCounter, 199 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 13:16:41,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1469 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 13:16:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15924 states. [2024-12-02 13:16:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15924 to 11795. [2024-12-02 13:16:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11795 states, 11016 states have (on average 1.6773783587509077) internal successors, (18478), 11030 states have internal predecessors, (18478), 712 states have call successors, (712), 66 states have call predecessors, (712), 66 states have return successors, (712), 698 states have call predecessors, (712), 712 states have call successors, (712) [2024-12-02 13:16:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11795 states to 11795 states and 19902 transitions. [2024-12-02 13:16:43,753 INFO L78 Accepts]: Start accepts. Automaton has 11795 states and 19902 transitions. Word has length 432 [2024-12-02 13:16:43,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 13:16:43,753 INFO L471 AbstractCegarLoop]: Abstraction has 11795 states and 19902 transitions. [2024-12-02 13:16:43,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 13:16:43,753 INFO L276 IsEmpty]: Start isEmpty. Operand 11795 states and 19902 transitions. [2024-12-02 13:16:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 13:16:43,758 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 13:16:43,758 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:16:43,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 13:16:43,758 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 13:16:43,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 13:16:43,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1806283279, now seen corresponding path program 1 times [2024-12-02 13:16:43,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 13:16:43,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414657127] [2024-12-02 13:16:43,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 13:16:43,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 13:16:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 13:19:20,006 WARN L286 SmtUtils]: Spent 21.04s on a formula simplification. DAG size of input: 199 DAG size of output: 194 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 13:19:44,802 WARN L286 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:20:09,931 WARN L286 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:20:57,310 WARN L286 SmtUtils]: Spent 10.40s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 13:21:06,607 WARN L286 SmtUtils]: Spent 5.37s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)