./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.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_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/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_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/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_e6c21abf-5637-493f-b010-309aba70904c/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 19ddd5d3e870010456648368aac7f13027e543c029bb47d44edea54e5df0ea2e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:56:05,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:56:05,111 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:56:05,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:56:05,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:56:05,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:56:05,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:56:05,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:56:05,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:56:05,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:56:05,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:56:05,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:56:05,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:56:05,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:56:05,140 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:56:05,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:56:05,141 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:56:05,142 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:56:05,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:56:05,142 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:56:05,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:56:05,143 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:56:05,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:56:05,144 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_e6c21abf-5637-493f-b010-309aba70904c/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 -> 19ddd5d3e870010456648368aac7f13027e543c029bb47d44edea54e5df0ea2e [2024-12-02 07:56:05,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:56:05,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:56:05,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:56:05,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:56:05,392 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:56:05,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i [2024-12-02 07:56:08,053 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/data/e8ecca730/bcdb28d5da4f4535a1ed3db8fbcfebf4/FLAG9c85bb8cb [2024-12-02 07:56:08,255 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:56:08,256 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i [2024-12-02 07:56:08,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/data/e8ecca730/bcdb28d5da4f4535a1ed3db8fbcfebf4/FLAG9c85bb8cb [2024-12-02 07:56:08,280 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/data/e8ecca730/bcdb28d5da4f4535a1ed3db8fbcfebf4 [2024-12-02 07:56:08,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:56:08,284 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:56:08,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:56:08,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:56:08,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:56:08,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373cc04d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08, skipping insertion in model container [2024-12-02 07:56:08,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:56:08,446 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_e6c21abf-5637-493f-b010-309aba70904c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i[919,932] [2024-12-02 07:56:08,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:56:08,524 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:56:08,534 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_e6c21abf-5637-493f-b010-309aba70904c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i[919,932] [2024-12-02 07:56:08,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:56:08,586 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:56:08,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08 WrapperNode [2024-12-02 07:56:08,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:56:08,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:56:08,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:56:08,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:56:08,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,640 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2024-12-02 07:56:08,640 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:56:08,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:56:08,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:56:08,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:56:08,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,671 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 07:56:08,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,681 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,694 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:56:08,695 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:56:08,695 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:56:08,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:56:08,696 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (1/1) ... [2024-12-02 07:56:08,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:56:08,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:08,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:56:08,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:56:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:56:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:56:08,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:56:08,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:56:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:56:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:56:08,827 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:56:08,828 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:56:09,254 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-12-02 07:56:09,254 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:56:09,265 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:56:09,265 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 07:56:09,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:56:09 BoogieIcfgContainer [2024-12-02 07:56:09,266 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:56:09,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:56:09,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:56:09,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:56:09,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:56:08" (1/3) ... [2024-12-02 07:56:09,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dbd656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:56:09, skipping insertion in model container [2024-12-02 07:56:09,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:08" (2/3) ... [2024-12-02 07:56:09,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76dbd656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:56:09, skipping insertion in model container [2024-12-02 07:56:09,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:56:09" (3/3) ... [2024-12-02 07:56:09,275 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i [2024-12-02 07:56:09,290 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:56:09,291 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-34.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:56:09,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:09,349 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;@34f23521, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:09,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:56:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 07:56:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:56:09,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:09,365 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:09,366 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:09,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1464893856, now seen corresponding path program 1 times [2024-12-02 07:56:09,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:09,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981336855] [2024-12-02 07:56:09,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:09,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 07:56:09,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:09,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981336855] [2024-12-02 07:56:09,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981336855] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:56:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026624880] [2024-12-02 07:56:09,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:09,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:56:09,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:09,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:56:09,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:56:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:09,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:56:09,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:56:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-12-02 07:56:09,868 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:56:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026624880] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:09,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:56:09,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:56:09,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264287561] [2024-12-02 07:56:09,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:09,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:56:09,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:09,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:56:09,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:09,897 INFO L87 Difference]: Start difference. First operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:56:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:09,923 INFO L93 Difference]: Finished difference Result 179 states and 306 transitions. [2024-12-02 07:56:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:56:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-12-02 07:56:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:09,930 INFO L225 Difference]: With dead ends: 179 [2024-12-02 07:56:09,930 INFO L226 Difference]: Without dead ends: 89 [2024-12-02 07:56:09,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 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 07:56:09,937 INFO L435 NwaCegarLoop]: 138 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, 138 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 07:56:09,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:56:09,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-12-02 07:56:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-12-02 07:56:09,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.462686567164179) internal successors, (98), 67 states have internal predecessors, (98), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 07:56:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 138 transitions. [2024-12-02 07:56:09,977 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 138 transitions. Word has length 141 [2024-12-02 07:56:09,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:09,978 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 138 transitions. [2024-12-02 07:56:09,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:56:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 138 transitions. [2024-12-02 07:56:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-12-02 07:56:09,981 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:09,981 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:09,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:56:10,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 07:56:10,182 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:10,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash -77428508, now seen corresponding path program 1 times [2024-12-02 07:56:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:10,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172462619] [2024-12-02 07:56:10,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:10,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172462619] [2024-12-02 07:56:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172462619] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:10,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:10,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:56:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402201807] [2024-12-02 07:56:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:10,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:56:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:10,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:56:10,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:56:10,653 INFO L87 Difference]: Start difference. First operand 89 states and 138 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:10,858 INFO L93 Difference]: Finished difference Result 301 states and 471 transitions. [2024-12-02 07:56:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:56:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-12-02 07:56:10,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:10,861 INFO L225 Difference]: With dead ends: 301 [2024-12-02 07:56:10,861 INFO L226 Difference]: Without dead ends: 215 [2024-12-02 07:56:10,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:56:10,863 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 165 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:10,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 450 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:56:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-12-02 07:56:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 183. [2024-12-02 07:56:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 140 states have (on average 1.4857142857142858) internal successors, (208), 140 states have internal predecessors, (208), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 07:56:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 288 transitions. [2024-12-02 07:56:10,896 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 288 transitions. Word has length 141 [2024-12-02 07:56:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:10,896 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 288 transitions. [2024-12-02 07:56:10,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 288 transitions. [2024-12-02 07:56:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-12-02 07:56:10,899 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:10,899 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:10,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:56:10,900 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:10,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash -252230160, now seen corresponding path program 1 times [2024-12-02 07:56:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017191716] [2024-12-02 07:56:10,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:10,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:11,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017191716] [2024-12-02 07:56:11,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017191716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:11,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:11,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:56:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985676821] [2024-12-02 07:56:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:11,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:56:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:11,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:56:11,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:56:11,200 INFO L87 Difference]: Start difference. First operand 183 states and 288 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:11,561 INFO L93 Difference]: Finished difference Result 534 states and 841 transitions. [2024-12-02 07:56:11,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:56:11,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2024-12-02 07:56:11,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:11,566 INFO L225 Difference]: With dead ends: 534 [2024-12-02 07:56:11,566 INFO L226 Difference]: Without dead ends: 354 [2024-12-02 07:56:11,568 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 07:56:11,569 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 176 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:11,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 483 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:56:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-12-02 07:56:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 187. [2024-12-02 07:56:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 144 states have (on average 1.4722222222222223) internal successors, (212), 144 states have internal predecessors, (212), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 07:56:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 292 transitions. [2024-12-02 07:56:11,612 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 292 transitions. Word has length 142 [2024-12-02 07:56:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:11,613 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 292 transitions. [2024-12-02 07:56:11,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:11,613 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 292 transitions. [2024-12-02 07:56:11,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:56:11,616 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:11,616 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:11,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:56:11,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:11,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:11,618 INFO L85 PathProgramCache]: Analyzing trace with hash 860487981, now seen corresponding path program 1 times [2024-12-02 07:56:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:11,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955153087] [2024-12-02 07:56:11,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:11,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:22,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:22,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955153087] [2024-12-02 07:56:22,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955153087] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:22,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:22,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:56:22,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829801479] [2024-12-02 07:56:22,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:22,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:56:22,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:22,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:56:22,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:56:22,808 INFO L87 Difference]: Start difference. First operand 187 states and 292 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:26,887 INFO L93 Difference]: Finished difference Result 624 states and 955 transitions. [2024-12-02 07:56:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 07:56:26,888 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-12-02 07:56:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:26,890 INFO L225 Difference]: With dead ends: 624 [2024-12-02 07:56:26,891 INFO L226 Difference]: Without dead ends: 440 [2024-12-02 07:56:26,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:56:26,892 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 716 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:26,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 825 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 07:56:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-12-02 07:56:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 278. [2024-12-02 07:56:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 214 states have (on average 1.4579439252336448) internal successors, (312), 214 states have internal predecessors, (312), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:26,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2024-12-02 07:56:26,927 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 143 [2024-12-02 07:56:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:26,927 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2024-12-02 07:56:26,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:26,927 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2024-12-02 07:56:26,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:56:26,929 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:26,929 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:26,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:56:26,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:26,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1659471953, now seen corresponding path program 1 times [2024-12-02 07:56:26,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:26,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420193278] [2024-12-02 07:56:26,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:26,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:28,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420193278] [2024-12-02 07:56:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420193278] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:56:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853382160] [2024-12-02 07:56:28,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:28,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:56:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:28,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:56:28,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:56:28,856 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:30,255 INFO L93 Difference]: Finished difference Result 707 states and 1081 transitions. [2024-12-02 07:56:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:56:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-12-02 07:56:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:30,258 INFO L225 Difference]: With dead ends: 707 [2024-12-02 07:56:30,259 INFO L226 Difference]: Without dead ends: 497 [2024-12-02 07:56:30,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:56:30,260 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 451 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:30,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 522 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 07:56:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-12-02 07:56:30,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 339. [2024-12-02 07:56:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 275 states have (on average 1.4727272727272727) internal successors, (405), 275 states have internal predecessors, (405), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:30,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 525 transitions. [2024-12-02 07:56:30,284 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 525 transitions. Word has length 143 [2024-12-02 07:56:30,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:30,285 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 525 transitions. [2024-12-02 07:56:30,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:30,285 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 525 transitions. [2024-12-02 07:56:30,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:56:30,286 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:30,286 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:30,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:56:30,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:30,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1540546351, now seen corresponding path program 1 times [2024-12-02 07:56:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:30,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643149170] [2024-12-02 07:56:30,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:30,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:32,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:32,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643149170] [2024-12-02 07:56:32,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643149170] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:32,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:32,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 07:56:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899825110] [2024-12-02 07:56:32,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:32,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:56:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:32,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:56:32,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:56:32,098 INFO L87 Difference]: Start difference. First operand 339 states and 525 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:33,725 INFO L93 Difference]: Finished difference Result 793 states and 1204 transitions. [2024-12-02 07:56:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:56:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-12-02 07:56:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:33,730 INFO L225 Difference]: With dead ends: 793 [2024-12-02 07:56:33,730 INFO L226 Difference]: Without dead ends: 546 [2024-12-02 07:56:33,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:56:33,732 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 420 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:33,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 489 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:56:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-12-02 07:56:33,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 470. [2024-12-02 07:56:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 406 states have (on average 1.4729064039408868) internal successors, (598), 406 states have internal predecessors, (598), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 718 transitions. [2024-12-02 07:56:33,768 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 718 transitions. Word has length 143 [2024-12-02 07:56:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:33,768 INFO L471 AbstractCegarLoop]: Abstraction has 470 states and 718 transitions. [2024-12-02 07:56:33,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 718 transitions. [2024-12-02 07:56:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:56:33,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:33,771 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:33,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:56:33,771 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:33,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:33,772 INFO L85 PathProgramCache]: Analyzing trace with hash -409645090, now seen corresponding path program 1 times [2024-12-02 07:56:33,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:33,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93703084] [2024-12-02 07:56:33,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:33,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:35,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93703084] [2024-12-02 07:56:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93703084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:35,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:35,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:56:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554857377] [2024-12-02 07:56:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:35,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:56:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:35,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:56:35,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:56:35,368 INFO L87 Difference]: Start difference. First operand 470 states and 718 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:35,864 INFO L93 Difference]: Finished difference Result 796 states and 1207 transitions. [2024-12-02 07:56:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:56:35,865 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-12-02 07:56:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:35,867 INFO L225 Difference]: With dead ends: 796 [2024-12-02 07:56:35,867 INFO L226 Difference]: Without dead ends: 566 [2024-12-02 07:56:35,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:56:35,868 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 197 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:35,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 458 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:56:35,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-12-02 07:56:35,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 472. [2024-12-02 07:56:35,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 408 states have (on average 1.4607843137254901) internal successors, (596), 408 states have internal predecessors, (596), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 716 transitions. [2024-12-02 07:56:35,893 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 716 transitions. Word has length 143 [2024-12-02 07:56:35,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:35,893 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 716 transitions. [2024-12-02 07:56:35,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 716 transitions. [2024-12-02 07:56:35,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 07:56:35,894 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:35,894 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:35,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:56:35,894 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:35,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -160580373, now seen corresponding path program 1 times [2024-12-02 07:56:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220846636] [2024-12-02 07:56:35,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:36,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:36,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220846636] [2024-12-02 07:56:36,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220846636] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:36,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:36,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:56:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042862080] [2024-12-02 07:56:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:36,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:56:36,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:36,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:56:36,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:56:36,254 INFO L87 Difference]: Start difference. First operand 472 states and 716 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:36,496 INFO L93 Difference]: Finished difference Result 712 states and 1086 transitions. [2024-12-02 07:56:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:56:36,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-12-02 07:56:36,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:36,499 INFO L225 Difference]: With dead ends: 712 [2024-12-02 07:56:36,499 INFO L226 Difference]: Without dead ends: 460 [2024-12-02 07:56:36,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:56:36,501 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 98 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:36,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 334 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:56:36,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-12-02 07:56:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 432. [2024-12-02 07:56:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 368 states have (on average 1.440217391304348) internal successors, (530), 368 states have internal predecessors, (530), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 650 transitions. [2024-12-02 07:56:36,541 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 650 transitions. Word has length 143 [2024-12-02 07:56:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:36,541 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 650 transitions. [2024-12-02 07:56:36,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 650 transitions. [2024-12-02 07:56:36,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:56:36,543 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:36,544 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:36,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:56:36,544 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:36,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:36,549 INFO L85 PathProgramCache]: Analyzing trace with hash 174777893, now seen corresponding path program 1 times [2024-12-02 07:56:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942552653] [2024-12-02 07:56:36,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:36,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942552653] [2024-12-02 07:56:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942552653] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:39,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 07:56:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541784448] [2024-12-02 07:56:39,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:39,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 07:56:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:39,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 07:56:39,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:56:39,238 INFO L87 Difference]: Start difference. First operand 432 states and 650 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:40,532 INFO L93 Difference]: Finished difference Result 803 states and 1194 transitions. [2024-12-02 07:56:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:56:40,533 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-12-02 07:56:40,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:40,535 INFO L225 Difference]: With dead ends: 803 [2024-12-02 07:56:40,535 INFO L226 Difference]: Without dead ends: 619 [2024-12-02 07:56:40,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:56:40,536 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 398 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:40,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 526 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:56:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2024-12-02 07:56:40,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 448. [2024-12-02 07:56:40,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 382 states have (on average 1.4293193717277486) internal successors, (546), 382 states have internal predecessors, (546), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 666 transitions. [2024-12-02 07:56:40,582 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 666 transitions. Word has length 144 [2024-12-02 07:56:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:40,582 INFO L471 AbstractCegarLoop]: Abstraction has 448 states and 666 transitions. [2024-12-02 07:56:40,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 666 transitions. [2024-12-02 07:56:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 07:56:40,583 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:40,583 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:40,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:56:40,584 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:40,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1479263024, now seen corresponding path program 1 times [2024-12-02 07:56:40,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:40,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533428633] [2024-12-02 07:56:40,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:40,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:45,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:45,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533428633] [2024-12-02 07:56:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533428633] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:45,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 07:56:45,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327383177] [2024-12-02 07:56:45,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:45,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:56:45,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:45,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:56:45,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:56:45,952 INFO L87 Difference]: Start difference. First operand 448 states and 666 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:48,154 INFO L93 Difference]: Finished difference Result 974 states and 1413 transitions. [2024-12-02 07:56:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:56:48,155 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-12-02 07:56:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:48,157 INFO L225 Difference]: With dead ends: 974 [2024-12-02 07:56:48,157 INFO L226 Difference]: Without dead ends: 635 [2024-12-02 07:56:48,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-12-02 07:56:48,158 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 289 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:48,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 911 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 07:56:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-12-02 07:56:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 519. [2024-12-02 07:56:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 453 states have (on average 1.4061810154525387) internal successors, (637), 453 states have internal predecessors, (637), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 757 transitions. [2024-12-02 07:56:48,187 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 757 transitions. Word has length 144 [2024-12-02 07:56:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:48,187 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 757 transitions. [2024-12-02 07:56:48,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 757 transitions. [2024-12-02 07:56:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:56:48,188 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:48,189 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:48,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:56:48,189 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:48,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:48,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1212835736, now seen corresponding path program 1 times [2024-12-02 07:56:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:48,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59609570] [2024-12-02 07:56:48,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:48,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:56:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:55,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59609570] [2024-12-02 07:56:55,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59609570] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:55,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:55,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 07:56:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586610862] [2024-12-02 07:56:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:55,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:56:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:55,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:56:55,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:56:55,225 INFO L87 Difference]: Start difference. First operand 519 states and 757 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:58,091 INFO L93 Difference]: Finished difference Result 813 states and 1172 transitions. [2024-12-02 07:56:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:56:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-12-02 07:56:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:58,094 INFO L225 Difference]: With dead ends: 813 [2024-12-02 07:56:58,094 INFO L226 Difference]: Without dead ends: 613 [2024-12-02 07:56:58,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:56:58,095 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 406 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:56:58,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 685 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 07:56:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-12-02 07:56:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 509. [2024-12-02 07:56:58,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 443 states have (on average 1.4108352144469527) internal successors, (625), 443 states have internal predecessors, (625), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:56:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 745 transitions. [2024-12-02 07:56:58,138 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 745 transitions. Word has length 145 [2024-12-02 07:56:58,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:58,139 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 745 transitions. [2024-12-02 07:56:58,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:56:58,139 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 745 transitions. [2024-12-02 07:56:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:56:58,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:58,140 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:58,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:56:58,140 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:58,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash -919249390, now seen corresponding path program 1 times [2024-12-02 07:56:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774592761] [2024-12-02 07:56:58,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:58,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:57:04,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774592761] [2024-12-02 07:57:04,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774592761] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:04,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:04,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:57:04,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973225163] [2024-12-02 07:57:04,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:04,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:57:04,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:04,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:57:04,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:57:04,245 INFO L87 Difference]: Start difference. First operand 509 states and 745 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:57:07,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:07,817 INFO L93 Difference]: Finished difference Result 807 states and 1174 transitions. [2024-12-02 07:57:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 07:57:07,818 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-12-02 07:57:07,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:07,820 INFO L225 Difference]: With dead ends: 807 [2024-12-02 07:57:07,821 INFO L226 Difference]: Without dead ends: 607 [2024-12-02 07:57:07,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2024-12-02 07:57:07,822 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 377 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:07,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 743 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 07:57:07,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-12-02 07:57:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 509. [2024-12-02 07:57:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 443 states have (on average 1.4108352144469527) internal successors, (625), 443 states have internal predecessors, (625), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:57:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 745 transitions. [2024-12-02 07:57:07,854 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 745 transitions. Word has length 145 [2024-12-02 07:57:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:07,855 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 745 transitions. [2024-12-02 07:57:07,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:57:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 745 transitions. [2024-12-02 07:57:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:57:07,856 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:07,856 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:07,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:57:07,856 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:07,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:07,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2014198382, now seen corresponding path program 1 times [2024-12-02 07:57:07,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106510214] [2024-12-02 07:57:07,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:57:12,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:12,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106510214] [2024-12-02 07:57:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106510214] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:12,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:12,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 07:57:12,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281942464] [2024-12-02 07:57:12,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:12,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:57:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:12,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:57:12,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:57:12,473 INFO L87 Difference]: Start difference. First operand 509 states and 745 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:57:18,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:18,614 INFO L93 Difference]: Finished difference Result 1188 states and 1711 transitions. [2024-12-02 07:57:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:57:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-12-02 07:57:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:18,617 INFO L225 Difference]: With dead ends: 1188 [2024-12-02 07:57:18,617 INFO L226 Difference]: Without dead ends: 887 [2024-12-02 07:57:18,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:57:18,618 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 645 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:18,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 791 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 07:57:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-12-02 07:57:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 593. [2024-12-02 07:57:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 527 states have (on average 1.413662239089184) internal successors, (745), 527 states have internal predecessors, (745), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:57:18,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 865 transitions. [2024-12-02 07:57:18,674 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 865 transitions. Word has length 145 [2024-12-02 07:57:18,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:18,675 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 865 transitions. [2024-12-02 07:57:18,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:57:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 865 transitions. [2024-12-02 07:57:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-12-02 07:57:18,676 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:18,676 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:18,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:57:18,676 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:18,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash -239191020, now seen corresponding path program 1 times [2024-12-02 07:57:18,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:18,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625429043] [2024-12-02 07:57:18,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:18,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:57:35,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:35,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625429043] [2024-12-02 07:57:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625429043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:57:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008676906] [2024-12-02 07:57:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:35,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:57:35,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:35,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:57:35,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:57:35,578 INFO L87 Difference]: Start difference. First operand 593 states and 865 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:57:39,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:39,728 INFO L93 Difference]: Finished difference Result 911 states and 1311 transitions. [2024-12-02 07:57:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:57:39,729 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-12-02 07:57:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:39,732 INFO L225 Difference]: With dead ends: 911 [2024-12-02 07:57:39,732 INFO L226 Difference]: Without dead ends: 707 [2024-12-02 07:57:39,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-12-02 07:57:39,733 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 407 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:39,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 743 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 07:57:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-12-02 07:57:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 615. [2024-12-02 07:57:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 549 states have (on average 1.4043715846994536) internal successors, (771), 549 states have internal predecessors, (771), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:57:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 891 transitions. [2024-12-02 07:57:39,766 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 891 transitions. Word has length 145 [2024-12-02 07:57:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:39,766 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 891 transitions. [2024-12-02 07:57:39,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:57:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 891 transitions. [2024-12-02 07:57:39,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:57:39,767 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:39,768 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:39,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 07:57:39,768 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:39,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:39,768 INFO L85 PathProgramCache]: Analyzing trace with hash -877955809, now seen corresponding path program 1 times [2024-12-02 07:57:39,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:39,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453681229] [2024-12-02 07:57:39,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:39,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:57:57,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:57,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453681229] [2024-12-02 07:57:57,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453681229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:57,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:57,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 07:57:57,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915505967] [2024-12-02 07:57:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:57,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:57:57,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:57,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:57:57,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:57:57,122 INFO L87 Difference]: Start difference. First operand 615 states and 891 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:57:58,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:58,657 INFO L93 Difference]: Finished difference Result 1055 states and 1490 transitions. [2024-12-02 07:57:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:57:58,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2024-12-02 07:57:58,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:58,661 INFO L225 Difference]: With dead ends: 1055 [2024-12-02 07:57:58,661 INFO L226 Difference]: Without dead ends: 1053 [2024-12-02 07:57:58,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:57:58,662 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 475 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:58,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 990 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:57:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2024-12-02 07:57:58,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 756. [2024-12-02 07:57:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 690 states have (on average 1.4043478260869566) internal successors, (969), 690 states have internal predecessors, (969), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:57:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1089 transitions. [2024-12-02 07:57:58,722 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1089 transitions. Word has length 146 [2024-12-02 07:57:58,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:58,723 INFO L471 AbstractCegarLoop]: Abstraction has 756 states and 1089 transitions. [2024-12-02 07:57:58,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:57:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1089 transitions. [2024-12-02 07:57:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:57:58,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:58,725 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:57:58,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 07:57:58,725 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:58,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1045272225, now seen corresponding path program 1 times [2024-12-02 07:57:58,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:58,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293395252] [2024-12-02 07:57:58,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:58,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:58:17,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293395252] [2024-12-02 07:58:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293395252] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:17,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:17,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 07:58:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919271192] [2024-12-02 07:58:17,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:17,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:58:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:17,982 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:58:17,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:58:17,982 INFO L87 Difference]: Start difference. First operand 756 states and 1089 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:58:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:19,199 INFO L93 Difference]: Finished difference Result 1074 states and 1512 transitions. [2024-12-02 07:58:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:58:19,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2024-12-02 07:58:19,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:19,202 INFO L225 Difference]: With dead ends: 1074 [2024-12-02 07:58:19,202 INFO L226 Difference]: Without dead ends: 1072 [2024-12-02 07:58:19,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2024-12-02 07:58:19,203 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 454 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:19,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1203 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 07:58:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2024-12-02 07:58:19,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 893. [2024-12-02 07:58:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 827 states have (on average 1.396614268440145) internal successors, (1155), 827 states have internal predecessors, (1155), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:58:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1275 transitions. [2024-12-02 07:58:19,245 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1275 transitions. Word has length 146 [2024-12-02 07:58:19,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:19,245 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1275 transitions. [2024-12-02 07:58:19,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:58:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1275 transitions. [2024-12-02 07:58:19,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:58:19,247 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:19,247 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:19,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 07:58:19,247 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:19,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:19,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1387428899, now seen corresponding path program 1 times [2024-12-02 07:58:19,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:19,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883723333] [2024-12-02 07:58:19,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:19,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:58:19,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:19,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883723333] [2024-12-02 07:58:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883723333] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:19,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:19,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:58:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859138864] [2024-12-02 07:58:19,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:19,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:58:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:19,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:58:19,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:58:19,354 INFO L87 Difference]: Start difference. First operand 893 states and 1275 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:19,497 INFO L93 Difference]: Finished difference Result 1337 states and 1915 transitions. [2024-12-02 07:58:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:58:19,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-12-02 07:58:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:19,501 INFO L225 Difference]: With dead ends: 1337 [2024-12-02 07:58:19,501 INFO L226 Difference]: Without dead ends: 852 [2024-12-02 07:58:19,502 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 07:58:19,502 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 116 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:19,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 519 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:58:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-12-02 07:58:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 828. [2024-12-02 07:58:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 762 states have (on average 1.3923884514435696) internal successors, (1061), 762 states have internal predecessors, (1061), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:58:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1181 transitions. [2024-12-02 07:58:19,564 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1181 transitions. Word has length 146 [2024-12-02 07:58:19,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:19,564 INFO L471 AbstractCegarLoop]: Abstraction has 828 states and 1181 transitions. [2024-12-02 07:58:19,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:19,564 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1181 transitions. [2024-12-02 07:58:19,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:58:19,566 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:19,566 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:19,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 07:58:19,566 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:19,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1721048839, now seen corresponding path program 1 times [2024-12-02 07:58:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:19,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928092792] [2024-12-02 07:58:19,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:58:25,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:25,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928092792] [2024-12-02 07:58:25,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928092792] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:25,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:25,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 07:58:25,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358430127] [2024-12-02 07:58:25,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:25,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:58:25,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:25,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:58:25,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:58:25,177 INFO L87 Difference]: Start difference. First operand 828 states and 1181 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:28,958 INFO L93 Difference]: Finished difference Result 1166 states and 1657 transitions. [2024-12-02 07:58:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 07:58:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-12-02 07:58:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:28,960 INFO L225 Difference]: With dead ends: 1166 [2024-12-02 07:58:28,960 INFO L226 Difference]: Without dead ends: 958 [2024-12-02 07:58:28,961 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2024-12-02 07:58:28,961 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 332 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:28,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 911 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:58:28,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2024-12-02 07:58:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 832. [2024-12-02 07:58:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 766 states have (on average 1.3929503916449086) internal successors, (1067), 766 states have internal predecessors, (1067), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:58:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1187 transitions. [2024-12-02 07:58:28,997 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1187 transitions. Word has length 146 [2024-12-02 07:58:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:28,997 INFO L471 AbstractCegarLoop]: Abstraction has 832 states and 1187 transitions. [2024-12-02 07:58:28,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1187 transitions. [2024-12-02 07:58:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:58:28,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:28,998 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:28,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 07:58:28,998 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:28,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1040990469, now seen corresponding path program 1 times [2024-12-02 07:58:28,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:28,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200102923] [2024-12-02 07:58:28,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:58:31,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:31,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200102923] [2024-12-02 07:58:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200102923] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:31,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:58:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591292973] [2024-12-02 07:58:31,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:31,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:58:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:31,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:58:31,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:58:31,900 INFO L87 Difference]: Start difference. First operand 832 states and 1187 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:33,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:33,234 INFO L93 Difference]: Finished difference Result 1361 states and 1965 transitions. [2024-12-02 07:58:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 07:58:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-12-02 07:58:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:33,237 INFO L225 Difference]: With dead ends: 1361 [2024-12-02 07:58:33,238 INFO L226 Difference]: Without dead ends: 1161 [2024-12-02 07:58:33,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:58:33,238 INFO L435 NwaCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:33,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 642 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:58:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2024-12-02 07:58:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 930. [2024-12-02 07:58:33,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 864 states have (on average 1.4178240740740742) internal successors, (1225), 864 states have internal predecessors, (1225), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:58:33,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1345 transitions. [2024-12-02 07:58:33,297 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1345 transitions. Word has length 146 [2024-12-02 07:58:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:33,297 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1345 transitions. [2024-12-02 07:58:33,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1345 transitions. [2024-12-02 07:58:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-12-02 07:58:33,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:33,299 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:33,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 07:58:33,300 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:33,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash -873119068, now seen corresponding path program 1 times [2024-12-02 07:58:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048606456] [2024-12-02 07:58:33,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:33,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:58:37,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:37,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048606456] [2024-12-02 07:58:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048606456] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:37,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:37,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:58:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886950986] [2024-12-02 07:58:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:37,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:58:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:37,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:58:37,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:58:37,054 INFO L87 Difference]: Start difference. First operand 930 states and 1345 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:40,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:40,274 INFO L93 Difference]: Finished difference Result 1391 states and 2030 transitions. [2024-12-02 07:58:40,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 07:58:40,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-12-02 07:58:40,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:40,277 INFO L225 Difference]: With dead ends: 1391 [2024-12-02 07:58:40,277 INFO L226 Difference]: Without dead ends: 1077 [2024-12-02 07:58:40,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2024-12-02 07:58:40,278 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 232 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:40,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 593 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 07:58:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2024-12-02 07:58:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 932. [2024-12-02 07:58:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 866 states have (on average 1.4168591224018476) internal successors, (1227), 866 states have internal predecessors, (1227), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:58:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1347 transitions. [2024-12-02 07:58:40,314 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1347 transitions. Word has length 146 [2024-12-02 07:58:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:40,314 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1347 transitions. [2024-12-02 07:58:40,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:58:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1347 transitions. [2024-12-02 07:58:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:58:40,315 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:40,315 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:40,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 07:58:40,315 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:40,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:40,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2002727641, now seen corresponding path program 1 times [2024-12-02 07:58:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:40,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426306623] [2024-12-02 07:58:40,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:40,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:59:05,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:05,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426306623] [2024-12-02 07:59:05,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426306623] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:05,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:05,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 07:59:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266753672] [2024-12-02 07:59:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:05,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 07:59:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:05,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 07:59:05,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-12-02 07:59:05,542 INFO L87 Difference]: Start difference. First operand 932 states and 1347 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:59:08,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:08,991 INFO L93 Difference]: Finished difference Result 1162 states and 1645 transitions. [2024-12-02 07:59:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:59:08,992 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 147 [2024-12-02 07:59:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:08,994 INFO L225 Difference]: With dead ends: 1162 [2024-12-02 07:59:08,994 INFO L226 Difference]: Without dead ends: 1160 [2024-12-02 07:59:08,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2024-12-02 07:59:08,995 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 428 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:08,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 864 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 07:59:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2024-12-02 07:59:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 964. [2024-12-02 07:59:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 898 states have (on average 1.418708240534521) internal successors, (1274), 898 states have internal predecessors, (1274), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:59:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1394 transitions. [2024-12-02 07:59:09,032 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1394 transitions. Word has length 147 [2024-12-02 07:59:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:09,032 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1394 transitions. [2024-12-02 07:59:09,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 07:59:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1394 transitions. [2024-12-02 07:59:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:59:09,033 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:09,033 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:09,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 07:59:09,033 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:09,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:09,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1281122405, now seen corresponding path program 1 times [2024-12-02 07:59:09,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:09,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209089892] [2024-12-02 07:59:09,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:09,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:59:09,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:09,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209089892] [2024-12-02 07:59:09,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209089892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:09,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:09,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:59:09,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521312850] [2024-12-02 07:59:09,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:09,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:59:09,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:09,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:59:09,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:59:09,095 INFO L87 Difference]: Start difference. First operand 964 states and 1394 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:59:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:09,165 INFO L93 Difference]: Finished difference Result 1439 states and 2091 transitions. [2024-12-02 07:59:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:59:09,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-12-02 07:59:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:09,168 INFO L225 Difference]: With dead ends: 1439 [2024-12-02 07:59:09,168 INFO L226 Difference]: Without dead ends: 1035 [2024-12-02 07:59:09,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:59:09,169 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 58 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:09,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 336 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:59:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-12-02 07:59:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 964. [2024-12-02 07:59:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 898 states have (on average 1.398663697104677) internal successors, (1256), 898 states have internal predecessors, (1256), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:59:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1376 transitions. [2024-12-02 07:59:09,207 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1376 transitions. Word has length 147 [2024-12-02 07:59:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:09,207 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1376 transitions. [2024-12-02 07:59:09,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:59:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1376 transitions. [2024-12-02 07:59:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:59:09,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:09,208 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:09,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 07:59:09,209 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:09,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:09,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1782766565, now seen corresponding path program 1 times [2024-12-02 07:59:09,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:09,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369611246] [2024-12-02 07:59:09,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:09,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:59:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:35,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369611246] [2024-12-02 07:59:35,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369611246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:35,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:35,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 07:59:35,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145044500] [2024-12-02 07:59:35,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:35,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:59:35,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:35,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:59:35,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:59:35,959 INFO L87 Difference]: Start difference. First operand 964 states and 1376 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:59:38,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:38,245 INFO L93 Difference]: Finished difference Result 1134 states and 1582 transitions. [2024-12-02 07:59:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 07:59:38,246 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-12-02 07:59:38,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:38,248 INFO L225 Difference]: With dead ends: 1134 [2024-12-02 07:59:38,248 INFO L226 Difference]: Without dead ends: 1132 [2024-12-02 07:59:38,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2024-12-02 07:59:38,249 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 285 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:38,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 769 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 07:59:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2024-12-02 07:59:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 996. [2024-12-02 07:59:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 930 states have (on average 1.396774193548387) internal successors, (1299), 930 states have internal predecessors, (1299), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:59:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1419 transitions. [2024-12-02 07:59:38,285 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1419 transitions. Word has length 147 [2024-12-02 07:59:38,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:38,285 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1419 transitions. [2024-12-02 07:59:38,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:59:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1419 transitions. [2024-12-02 07:59:38,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:59:38,286 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:38,286 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:38,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 07:59:38,286 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:38,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:38,287 INFO L85 PathProgramCache]: Analyzing trace with hash -397852357, now seen corresponding path program 1 times [2024-12-02 07:59:38,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:38,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419330320] [2024-12-02 07:59:38,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:38,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:59:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419330320] [2024-12-02 07:59:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419330320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 07:59:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143486265] [2024-12-02 07:59:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:51,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 07:59:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:51,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 07:59:51,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 07:59:51,923 INFO L87 Difference]: Start difference. First operand 996 states and 1419 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:59:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:55,819 INFO L93 Difference]: Finished difference Result 1709 states and 2391 transitions. [2024-12-02 07:59:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 07:59:55,819 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-12-02 07:59:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:55,822 INFO L225 Difference]: With dead ends: 1709 [2024-12-02 07:59:55,822 INFO L226 Difference]: Without dead ends: 1379 [2024-12-02 07:59:55,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2024-12-02 07:59:55,823 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 815 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:55,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 792 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 07:59:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-12-02 07:59:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1020. [2024-12-02 07:59:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 954 states have (on average 1.3972746331236898) internal successors, (1333), 954 states have internal predecessors, (1333), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 07:59:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1453 transitions. [2024-12-02 07:59:55,865 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1453 transitions. Word has length 147 [2024-12-02 07:59:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:55,865 INFO L471 AbstractCegarLoop]: Abstraction has 1020 states and 1453 transitions. [2024-12-02 07:59:55,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 07:59:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1453 transitions. [2024-12-02 07:59:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 07:59:55,866 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:55,866 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:55,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 07:59:55,866 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:55,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1377155005, now seen corresponding path program 1 times [2024-12-02 07:59:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:55,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069599017] [2024-12-02 07:59:55,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 07:59:59,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:59,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069599017] [2024-12-02 07:59:59,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069599017] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:59,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:59,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 07:59:59,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492838967] [2024-12-02 07:59:59,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:59,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 07:59:59,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:59,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 07:59:59,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:59:59,444 INFO L87 Difference]: Start difference. First operand 1020 states and 1453 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:01,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:01,455 INFO L93 Difference]: Finished difference Result 1658 states and 2357 transitions. [2024-12-02 08:00:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 08:00:01,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-12-02 08:00:01,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:01,458 INFO L225 Difference]: With dead ends: 1658 [2024-12-02 08:00:01,458 INFO L226 Difference]: Without dead ends: 1328 [2024-12-02 08:00:01,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:00:01,459 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 235 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:01,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 470 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 08:00:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2024-12-02 08:00:01,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1000. [2024-12-02 08:00:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 934 states have (on average 1.3972162740899357) internal successors, (1305), 934 states have internal predecessors, (1305), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1425 transitions. [2024-12-02 08:00:01,500 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1425 transitions. Word has length 147 [2024-12-02 08:00:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:01,500 INFO L471 AbstractCegarLoop]: Abstraction has 1000 states and 1425 transitions. [2024-12-02 08:00:01,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1425 transitions. [2024-12-02 08:00:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:00:01,502 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:01,502 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:01,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 08:00:01,502 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:01,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash 282206013, now seen corresponding path program 1 times [2024-12-02 08:00:01,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:01,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141622211] [2024-12-02 08:00:01,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:01,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:03,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:03,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141622211] [2024-12-02 08:00:03,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141622211] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:03,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:03,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:00:03,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632901395] [2024-12-02 08:00:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:03,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:00:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:03,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:00:03,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:00:03,921 INFO L87 Difference]: Start difference. First operand 1000 states and 1425 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:05,800 INFO L93 Difference]: Finished difference Result 1560 states and 2206 transitions. [2024-12-02 08:00:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:00:05,801 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-12-02 08:00:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:05,803 INFO L225 Difference]: With dead ends: 1560 [2024-12-02 08:00:05,804 INFO L226 Difference]: Without dead ends: 1152 [2024-12-02 08:00:05,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:00:05,805 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 284 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:05,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 644 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 08:00:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2024-12-02 08:00:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 913. [2024-12-02 08:00:05,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 847 states have (on average 1.386068476977568) internal successors, (1174), 847 states have internal predecessors, (1174), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:05,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1294 transitions. [2024-12-02 08:00:05,847 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1294 transitions. Word has length 147 [2024-12-02 08:00:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:05,847 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1294 transitions. [2024-12-02 08:00:05,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1294 transitions. [2024-12-02 08:00:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-12-02 08:00:05,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:05,848 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:05,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 08:00:05,848 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:05,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:05,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2057213375, now seen corresponding path program 1 times [2024-12-02 08:00:05,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:05,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163235486] [2024-12-02 08:00:05,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:05,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:19,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:19,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163235486] [2024-12-02 08:00:19,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163235486] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:19,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:19,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 08:00:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928687598] [2024-12-02 08:00:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:19,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:00:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:19,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:00:19,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:00:19,506 INFO L87 Difference]: Start difference. First operand 913 states and 1294 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:23,071 INFO L93 Difference]: Finished difference Result 1553 states and 2185 transitions. [2024-12-02 08:00:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 08:00:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-12-02 08:00:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:23,074 INFO L225 Difference]: With dead ends: 1553 [2024-12-02 08:00:23,074 INFO L226 Difference]: Without dead ends: 1219 [2024-12-02 08:00:23,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-12-02 08:00:23,075 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 574 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:23,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 714 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 08:00:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-12-02 08:00:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 952. [2024-12-02 08:00:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 886 states have (on average 1.391647855530474) internal successors, (1233), 886 states have internal predecessors, (1233), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1353 transitions. [2024-12-02 08:00:23,118 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1353 transitions. Word has length 147 [2024-12-02 08:00:23,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:23,118 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1353 transitions. [2024-12-02 08:00:23,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1353 transitions. [2024-12-02 08:00:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 08:00:23,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:23,118 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:23,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 08:00:23,119 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:23,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 15156425, now seen corresponding path program 1 times [2024-12-02 08:00:23,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:23,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728348523] [2024-12-02 08:00:23,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:23,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:23,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728348523] [2024-12-02 08:00:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728348523] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:00:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4485192] [2024-12-02 08:00:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:23,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:00:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:23,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:00:23,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:00:23,401 INFO L87 Difference]: Start difference. First operand 952 states and 1353 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:24,050 INFO L93 Difference]: Finished difference Result 1464 states and 2089 transitions. [2024-12-02 08:00:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:00:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-12-02 08:00:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:24,053 INFO L225 Difference]: With dead ends: 1464 [2024-12-02 08:00:24,053 INFO L226 Difference]: Without dead ends: 1122 [2024-12-02 08:00:24,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:00:24,054 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 151 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:24,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 611 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:00:24,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-12-02 08:00:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1011. [2024-12-02 08:00:24,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 945 states have (on average 1.3873015873015873) internal successors, (1311), 945 states have internal predecessors, (1311), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1431 transitions. [2024-12-02 08:00:24,094 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1431 transitions. Word has length 148 [2024-12-02 08:00:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:24,094 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1431 transitions. [2024-12-02 08:00:24,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1431 transitions. [2024-12-02 08:00:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-12-02 08:00:24,095 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:24,095 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:24,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 08:00:24,095 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:24,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash -653893229, now seen corresponding path program 1 times [2024-12-02 08:00:24,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:24,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103822887] [2024-12-02 08:00:24,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:24,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103822887] [2024-12-02 08:00:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103822887] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:00:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662055813] [2024-12-02 08:00:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:24,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:00:24,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:24,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:00:24,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:00:24,390 INFO L87 Difference]: Start difference. First operand 1011 states and 1431 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:24,852 INFO L93 Difference]: Finished difference Result 1405 states and 2008 transitions. [2024-12-02 08:00:24,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:00:24,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-12-02 08:00:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:24,855 INFO L225 Difference]: With dead ends: 1405 [2024-12-02 08:00:24,855 INFO L226 Difference]: Without dead ends: 1009 [2024-12-02 08:00:24,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:00:24,856 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 203 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:24,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 473 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:00:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-12-02 08:00:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 949. [2024-12-02 08:00:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 883 states have (on average 1.3873159682899208) internal successors, (1225), 883 states have internal predecessors, (1225), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1345 transitions. [2024-12-02 08:00:24,896 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1345 transitions. Word has length 148 [2024-12-02 08:00:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:24,896 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1345 transitions. [2024-12-02 08:00:24,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1345 transitions. [2024-12-02 08:00:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 08:00:24,897 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:24,897 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:24,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 08:00:24,897 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:24,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:24,897 INFO L85 PathProgramCache]: Analyzing trace with hash -619191226, now seen corresponding path program 1 times [2024-12-02 08:00:24,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:24,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131837329] [2024-12-02 08:00:24,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131837329] [2024-12-02 08:00:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131837329] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:24,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:00:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833756720] [2024-12-02 08:00:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:24,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:00:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:24,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:00:24,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:00:24,970 INFO L87 Difference]: Start difference. First operand 949 states and 1345 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:25,109 INFO L93 Difference]: Finished difference Result 1472 states and 2124 transitions. [2024-12-02 08:00:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:00:25,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-12-02 08:00:25,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:25,114 INFO L225 Difference]: With dead ends: 1472 [2024-12-02 08:00:25,114 INFO L226 Difference]: Without dead ends: 1014 [2024-12-02 08:00:25,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:00:25,116 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 72 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:25,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 246 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:00:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2024-12-02 08:00:25,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 902. [2024-12-02 08:00:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 836 states have (on average 1.4138755980861244) internal successors, (1182), 836 states have internal predecessors, (1182), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1302 transitions. [2024-12-02 08:00:25,159 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1302 transitions. Word has length 150 [2024-12-02 08:00:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:25,159 INFO L471 AbstractCegarLoop]: Abstraction has 902 states and 1302 transitions. [2024-12-02 08:00:25,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:25,159 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1302 transitions. [2024-12-02 08:00:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 08:00:25,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:25,160 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:25,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 08:00:25,160 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:25,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1382790144, now seen corresponding path program 1 times [2024-12-02 08:00:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004539407] [2024-12-02 08:00:25,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:25,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:25,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:25,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004539407] [2024-12-02 08:00:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004539407] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:25,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:25,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:00:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573456475] [2024-12-02 08:00:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:25,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:00:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:25,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:00:25,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:00:25,356 INFO L87 Difference]: Start difference. First operand 902 states and 1302 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:25,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:25,777 INFO L93 Difference]: Finished difference Result 1487 states and 2140 transitions. [2024-12-02 08:00:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:00:25,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-12-02 08:00:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:25,781 INFO L225 Difference]: With dead ends: 1487 [2024-12-02 08:00:25,781 INFO L226 Difference]: Without dead ends: 1045 [2024-12-02 08:00:25,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:00:25,783 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 147 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:25,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 686 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:00:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-12-02 08:00:25,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 928. [2024-12-02 08:00:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 862 states have (on average 1.406032482598608) internal successors, (1212), 862 states have internal predecessors, (1212), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1332 transitions. [2024-12-02 08:00:25,843 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1332 transitions. Word has length 151 [2024-12-02 08:00:25,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:25,843 INFO L471 AbstractCegarLoop]: Abstraction has 928 states and 1332 transitions. [2024-12-02 08:00:25,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:25,843 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1332 transitions. [2024-12-02 08:00:25,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 08:00:25,844 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:25,844 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:25,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 08:00:25,844 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:25,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1312539197, now seen corresponding path program 1 times [2024-12-02 08:00:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:25,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042775326] [2024-12-02 08:00:25,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:26,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042775326] [2024-12-02 08:00:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042775326] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:26,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 08:00:26,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396605433] [2024-12-02 08:00:26,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:26,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 08:00:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:26,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 08:00:26,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 08:00:26,052 INFO L87 Difference]: Start difference. First operand 928 states and 1332 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:26,517 INFO L93 Difference]: Finished difference Result 1412 states and 2040 transitions. [2024-12-02 08:00:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 08:00:26,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-12-02 08:00:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:26,522 INFO L225 Difference]: With dead ends: 1412 [2024-12-02 08:00:26,522 INFO L226 Difference]: Without dead ends: 978 [2024-12-02 08:00:26,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:00:26,523 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 140 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:26,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 667 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:00:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-12-02 08:00:26,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 926. [2024-12-02 08:00:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 860 states have (on average 1.4046511627906977) internal successors, (1208), 860 states have internal predecessors, (1208), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:26,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1328 transitions. [2024-12-02 08:00:26,597 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1328 transitions. Word has length 151 [2024-12-02 08:00:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:26,597 INFO L471 AbstractCegarLoop]: Abstraction has 926 states and 1328 transitions. [2024-12-02 08:00:26,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1328 transitions. [2024-12-02 08:00:26,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-12-02 08:00:26,599 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:26,599 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:26,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-02 08:00:26,599 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:26,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -502844202, now seen corresponding path program 1 times [2024-12-02 08:00:26,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:26,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970696973] [2024-12-02 08:00:26,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:37,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:37,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970696973] [2024-12-02 08:00:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970696973] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:37,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:37,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 08:00:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872905436] [2024-12-02 08:00:37,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:37,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:00:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:37,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:00:37,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:00:37,305 INFO L87 Difference]: Start difference. First operand 926 states and 1328 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:40,089 INFO L93 Difference]: Finished difference Result 1544 states and 2192 transitions. [2024-12-02 08:00:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:00:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-12-02 08:00:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:40,092 INFO L225 Difference]: With dead ends: 1544 [2024-12-02 08:00:40,092 INFO L226 Difference]: Without dead ends: 1047 [2024-12-02 08:00:40,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=164, Invalid=592, Unknown=0, NotChecked=0, Total=756 [2024-12-02 08:00:40,093 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 295 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:40,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 842 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 08:00:40,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2024-12-02 08:00:40,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 804. [2024-12-02 08:00:40,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 738 states have (on average 1.4037940379403795) internal successors, (1036), 738 states have internal predecessors, (1036), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1156 transitions. [2024-12-02 08:00:40,134 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1156 transitions. Word has length 151 [2024-12-02 08:00:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:40,134 INFO L471 AbstractCegarLoop]: Abstraction has 804 states and 1156 transitions. [2024-12-02 08:00:40,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:40,134 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1156 transitions. [2024-12-02 08:00:40,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 08:00:40,135 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:40,135 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:40,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 08:00:40,135 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:40,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash -668357850, now seen corresponding path program 1 times [2024-12-02 08:00:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789670119] [2024-12-02 08:00:40,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:40,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:40,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:40,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789670119] [2024-12-02 08:00:40,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789670119] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:40,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:40,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:00:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288772500] [2024-12-02 08:00:40,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:40,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:00:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:40,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:00:40,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:00:40,507 INFO L87 Difference]: Start difference. First operand 804 states and 1156 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:41,555 INFO L93 Difference]: Finished difference Result 1427 states and 2041 transitions. [2024-12-02 08:00:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:00:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-12-02 08:00:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:41,558 INFO L225 Difference]: With dead ends: 1427 [2024-12-02 08:00:41,558 INFO L226 Difference]: Without dead ends: 993 [2024-12-02 08:00:41,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-12-02 08:00:41,559 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 194 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:41,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1024 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:00:41,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-12-02 08:00:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 816. [2024-12-02 08:00:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 750 states have (on average 1.3973333333333333) internal successors, (1048), 750 states have internal predecessors, (1048), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1168 transitions. [2024-12-02 08:00:41,602 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1168 transitions. Word has length 154 [2024-12-02 08:00:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:41,602 INFO L471 AbstractCegarLoop]: Abstraction has 816 states and 1168 transitions. [2024-12-02 08:00:41,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1168 transitions. [2024-12-02 08:00:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 08:00:41,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:41,603 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:41,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 08:00:41,603 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:41,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1131306506, now seen corresponding path program 1 times [2024-12-02 08:00:41,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:41,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939592738] [2024-12-02 08:00:41,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:00:43,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:43,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939592738] [2024-12-02 08:00:43,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939592738] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:43,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:43,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 08:00:43,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363716017] [2024-12-02 08:00:43,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:43,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:00:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:43,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:00:43,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:00:43,773 INFO L87 Difference]: Start difference. First operand 816 states and 1168 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:45,935 INFO L93 Difference]: Finished difference Result 1429 states and 2042 transitions. [2024-12-02 08:00:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:00:45,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-12-02 08:00:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:45,937 INFO L225 Difference]: With dead ends: 1429 [2024-12-02 08:00:45,937 INFO L226 Difference]: Without dead ends: 995 [2024-12-02 08:00:45,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-12-02 08:00:45,939 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 331 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:45,939 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 750 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 08:00:45,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-12-02 08:00:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 913. [2024-12-02 08:00:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 847 states have (on average 1.3919716646989375) internal successors, (1179), 847 states have internal predecessors, (1179), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:00:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1299 transitions. [2024-12-02 08:00:46,004 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1299 transitions. Word has length 154 [2024-12-02 08:00:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:46,004 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1299 transitions. [2024-12-02 08:00:46,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:00:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1299 transitions. [2024-12-02 08:00:46,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 08:00:46,005 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:46,005 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:46,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 08:00:46,005 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:46,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2142592436, now seen corresponding path program 1 times [2024-12-02 08:00:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983406690] [2024-12-02 08:00:46,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:46,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:01:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:01:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:01:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983406690] [2024-12-02 08:01:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983406690] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:01:11,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:01:11,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 08:01:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153656763] [2024-12-02 08:01:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:01:11,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 08:01:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:01:11,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 08:01:11,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2024-12-02 08:01:11,425 INFO L87 Difference]: Start difference. First operand 913 states and 1299 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:01:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:01:20,085 INFO L93 Difference]: Finished difference Result 1055 states and 1448 transitions. [2024-12-02 08:01:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 08:01:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-12-02 08:01:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:01:20,088 INFO L225 Difference]: With dead ends: 1055 [2024-12-02 08:01:20,088 INFO L226 Difference]: Without dead ends: 1053 [2024-12-02 08:01:20,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 08:01:20,089 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 503 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:01:20,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 882 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1865 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 08:01:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2024-12-02 08:01:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 928. [2024-12-02 08:01:20,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 862 states have (on average 1.388631090487239) internal successors, (1197), 862 states have internal predecessors, (1197), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:01:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1317 transitions. [2024-12-02 08:01:20,138 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1317 transitions. Word has length 154 [2024-12-02 08:01:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:01:20,138 INFO L471 AbstractCegarLoop]: Abstraction has 928 states and 1317 transitions. [2024-12-02 08:01:20,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:01:20,138 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1317 transitions. [2024-12-02 08:01:20,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-12-02 08:01:20,139 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:01:20,139 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:20,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 08:01:20,139 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:01:20,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:01:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2070205878, now seen corresponding path program 1 times [2024-12-02 08:01:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:01:20,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221085726] [2024-12-02 08:01:20,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:01:20,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:01:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:01:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:01:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:01:41,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221085726] [2024-12-02 08:01:41,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221085726] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:01:41,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:01:41,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 08:01:41,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540233583] [2024-12-02 08:01:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:01:41,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 08:01:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:01:41,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 08:01:41,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2024-12-02 08:01:41,448 INFO L87 Difference]: Start difference. First operand 928 states and 1317 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:01:49,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:01:49,280 INFO L93 Difference]: Finished difference Result 1070 states and 1466 transitions. [2024-12-02 08:01:49,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 08:01:49,281 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-12-02 08:01:49,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:01:49,284 INFO L225 Difference]: With dead ends: 1070 [2024-12-02 08:01:49,284 INFO L226 Difference]: Without dead ends: 1068 [2024-12-02 08:01:49,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=470, Invalid=1980, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 08:01:49,285 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 532 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 2063 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:01:49,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1024 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2063 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 08:01:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2024-12-02 08:01:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 943. [2024-12-02 08:01:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 943 states, 877 states have (on average 1.3854047890535919) internal successors, (1215), 877 states have internal predecessors, (1215), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:01:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1335 transitions. [2024-12-02 08:01:49,333 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1335 transitions. Word has length 154 [2024-12-02 08:01:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:01:49,333 INFO L471 AbstractCegarLoop]: Abstraction has 943 states and 1335 transitions. [2024-12-02 08:01:49,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:01:49,334 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1335 transitions. [2024-12-02 08:01:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:01:49,334 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:01:49,335 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:49,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 08:01:49,335 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:01:49,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:01:49,335 INFO L85 PathProgramCache]: Analyzing trace with hash -562528926, now seen corresponding path program 1 times [2024-12-02 08:01:49,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:01:49,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413196681] [2024-12-02 08:01:49,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:01:49,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:01:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:02:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:02:15,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:02:15,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413196681] [2024-12-02 08:02:15,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413196681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:02:15,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:02:15,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-12-02 08:02:15,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591649299] [2024-12-02 08:02:15,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:02:15,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 08:02:15,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:02:15,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 08:02:15,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-12-02 08:02:15,231 INFO L87 Difference]: Start difference. First operand 943 states and 1335 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:02:22,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:02:22,088 INFO L93 Difference]: Finished difference Result 1064 states and 1460 transitions. [2024-12-02 08:02:22,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-12-02 08:02:22,089 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-12-02 08:02:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:02:22,091 INFO L225 Difference]: With dead ends: 1064 [2024-12-02 08:02:22,091 INFO L226 Difference]: Without dead ends: 1062 [2024-12-02 08:02:22,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=564, Invalid=2192, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 08:02:22,092 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 464 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:02:22,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 961 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 08:02:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2024-12-02 08:02:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 940. [2024-12-02 08:02:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 874 states have (on average 1.3844393592677346) internal successors, (1210), 874 states have internal predecessors, (1210), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:02:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1330 transitions. [2024-12-02 08:02:22,159 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1330 transitions. Word has length 155 [2024-12-02 08:02:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:02:22,159 INFO L471 AbstractCegarLoop]: Abstraction has 940 states and 1330 transitions. [2024-12-02 08:02:22,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:02:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1330 transitions. [2024-12-02 08:02:22,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-12-02 08:02:22,160 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:02:22,160 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:22,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 08:02:22,161 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:02:22,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:02:22,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1488455072, now seen corresponding path program 1 times [2024-12-02 08:02:22,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:02:22,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043771366] [2024-12-02 08:02:22,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:02:22,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:02:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:02:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:02:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:02:39,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043771366] [2024-12-02 08:02:39,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043771366] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:02:39,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:02:39,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 08:02:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610175196] [2024-12-02 08:02:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:02:39,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:02:39,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:02:39,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:02:39,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:02:39,791 INFO L87 Difference]: Start difference. First operand 940 states and 1330 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:02:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:02:43,896 INFO L93 Difference]: Finished difference Result 1109 states and 1513 transitions. [2024-12-02 08:02:43,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 08:02:43,896 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-12-02 08:02:43,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:02:43,898 INFO L225 Difference]: With dead ends: 1109 [2024-12-02 08:02:43,898 INFO L226 Difference]: Without dead ends: 1107 [2024-12-02 08:02:43,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2024-12-02 08:02:43,899 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 435 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:02:43,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1102 Invalid, 1595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 08:02:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-12-02 08:02:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 949. [2024-12-02 08:02:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 883 states have (on average 1.3827859569648924) internal successors, (1221), 883 states have internal predecessors, (1221), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:02:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1341 transitions. [2024-12-02 08:02:43,959 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1341 transitions. Word has length 155 [2024-12-02 08:02:43,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:02:43,959 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1341 transitions. [2024-12-02 08:02:43,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:02:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1341 transitions. [2024-12-02 08:02:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:02:43,960 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:02:43,960 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:02:43,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-12-02 08:02:43,960 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:02:43,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:02:43,960 INFO L85 PathProgramCache]: Analyzing trace with hash -532468993, now seen corresponding path program 1 times [2024-12-02 08:02:43,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:02:43,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147863517] [2024-12-02 08:02:43,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:02:43,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:02:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:03:02,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147863517] [2024-12-02 08:03:02,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147863517] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:02,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:02,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 08:03:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333332532] [2024-12-02 08:03:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:02,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 08:03:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:02,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 08:03:02,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:03:02,767 INFO L87 Difference]: Start difference. First operand 949 states and 1341 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:03:06,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:06,596 INFO L93 Difference]: Finished difference Result 1037 states and 1432 transitions. [2024-12-02 08:03:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 08:03:06,597 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-12-02 08:03:06,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:06,599 INFO L225 Difference]: With dead ends: 1037 [2024-12-02 08:03:06,599 INFO L226 Difference]: Without dead ends: 1035 [2024-12-02 08:03:06,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 08:03:06,600 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 311 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:06,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1101 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 08:03:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-12-02 08:03:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 935. [2024-12-02 08:03:06,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 869 states have (on average 1.385500575373993) internal successors, (1204), 869 states have internal predecessors, (1204), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:03:06,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1324 transitions. [2024-12-02 08:03:06,649 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1324 transitions. Word has length 158 [2024-12-02 08:03:06,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:06,649 INFO L471 AbstractCegarLoop]: Abstraction has 935 states and 1324 transitions. [2024-12-02 08:03:06,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:03:06,650 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1324 transitions. [2024-12-02 08:03:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:03:06,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:06,650 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:06,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 08:03:06,650 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:06,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash -604855551, now seen corresponding path program 1 times [2024-12-02 08:03:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:06,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250336388] [2024-12-02 08:03:06,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:06,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:03:23,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:23,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250336388] [2024-12-02 08:03:23,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250336388] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:23,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:23,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 08:03:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99206891] [2024-12-02 08:03:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:23,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 08:03:23,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:23,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 08:03:23,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:03:23,098 INFO L87 Difference]: Start difference. First operand 935 states and 1324 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:03:26,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:26,582 INFO L93 Difference]: Finished difference Result 1037 states and 1432 transitions. [2024-12-02 08:03:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 08:03:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-12-02 08:03:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:26,584 INFO L225 Difference]: With dead ends: 1037 [2024-12-02 08:03:26,584 INFO L226 Difference]: Without dead ends: 1035 [2024-12-02 08:03:26,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=828, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 08:03:26,585 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 244 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:26,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1029 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 08:03:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-12-02 08:03:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 921. [2024-12-02 08:03:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 855 states have (on average 1.3883040935672515) internal successors, (1187), 855 states have internal predecessors, (1187), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:03:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1307 transitions. [2024-12-02 08:03:26,634 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1307 transitions. Word has length 158 [2024-12-02 08:03:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:26,635 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1307 transitions. [2024-12-02 08:03:26,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 08:03:26,635 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1307 transitions. [2024-12-02 08:03:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:03:26,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:26,635 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:26,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-12-02 08:03:26,636 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:26,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1518515005, now seen corresponding path program 1 times [2024-12-02 08:03:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504835530] [2024-12-02 08:03:26,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:03:29,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:29,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504835530] [2024-12-02 08:03:29,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504835530] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:29,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:29,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-02 08:03:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938211714] [2024-12-02 08:03:29,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:29,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 08:03:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:29,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 08:03:29,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:03:29,331 INFO L87 Difference]: Start difference. First operand 921 states and 1307 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:03:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:30,834 INFO L93 Difference]: Finished difference Result 1453 states and 2065 transitions. [2024-12-02 08:03:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:03:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 08:03:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:30,837 INFO L225 Difference]: With dead ends: 1453 [2024-12-02 08:03:30,837 INFO L226 Difference]: Without dead ends: 903 [2024-12-02 08:03:30,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-12-02 08:03:30,838 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 238 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:30,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 618 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:03:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2024-12-02 08:03:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 837. [2024-12-02 08:03:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 771 states have (on average 1.3942931258106355) internal successors, (1075), 771 states have internal predecessors, (1075), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:03:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1195 transitions. [2024-12-02 08:03:30,889 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1195 transitions. Word has length 158 [2024-12-02 08:03:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:30,889 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 1195 transitions. [2024-12-02 08:03:30,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:03:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1195 transitions. [2024-12-02 08:03:30,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-12-02 08:03:30,889 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:30,890 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:03:30,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-12-02 08:03:30,890 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:30,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:30,890 INFO L85 PathProgramCache]: Analyzing trace with hash 497446651, now seen corresponding path program 1 times [2024-12-02 08:03:30,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:30,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142243245] [2024-12-02 08:03:30,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:30,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-12-02 08:03:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142243245] [2024-12-02 08:03:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142243245] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:03:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129622635] [2024-12-02 08:03:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:31,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:03:31,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:31,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:03:31,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:03:31,380 INFO L87 Difference]: Start difference. First operand 837 states and 1195 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:03:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:32,045 INFO L93 Difference]: Finished difference Result 1311 states and 1892 transitions. [2024-12-02 08:03:32,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 08:03:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-12-02 08:03:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:32,047 INFO L225 Difference]: With dead ends: 1311 [2024-12-02 08:03:32,047 INFO L226 Difference]: Without dead ends: 816 [2024-12-02 08:03:32,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-12-02 08:03:32,048 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 154 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:32,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 698 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 08:03:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2024-12-02 08:03:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 776. [2024-12-02 08:03:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 710 states have (on average 1.3985915492957746) internal successors, (993), 710 states have internal predecessors, (993), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:03:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1113 transitions. [2024-12-02 08:03:32,097 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1113 transitions. Word has length 158 [2024-12-02 08:03:32,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:32,098 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 1113 transitions. [2024-12-02 08:03:32,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:03:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1113 transitions. [2024-12-02 08:03:32,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-12-02 08:03:32,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:32,099 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:32,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-12-02 08:03:32,100 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:32,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:32,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1381257276, now seen corresponding path program 1 times [2024-12-02 08:03:32,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:32,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220574942] [2024-12-02 08:03:32,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:03:32,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:32,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220574942] [2024-12-02 08:03:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220574942] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:32,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923591882] [2024-12-02 08:03:32,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:32,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:32,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:32,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:03:32,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:03:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:32,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 08:03:32,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:03:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 412 proven. 1663 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-12-02 08:03:33,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:03:33,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 132 proven. 24 refuted. 0 times theorem prover too weak. 3022 trivial. 0 not checked. [2024-12-02 08:03:33,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923591882] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:03:33,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:03:33,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 19 [2024-12-02 08:03:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124532291] [2024-12-02 08:03:33,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:03:33,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 08:03:33,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:33,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 08:03:33,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-12-02 08:03:33,778 INFO L87 Difference]: Start difference. First operand 776 states and 1113 transitions. Second operand has 19 states, 19 states have (on average 11.421052631578947) internal successors, (217), 19 states have internal predecessors, (217), 6 states have call successors, (88), 4 states have call predecessors, (88), 6 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) [2024-12-02 08:03:34,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:34,398 INFO L93 Difference]: Finished difference Result 1259 states and 1785 transitions. [2024-12-02 08:03:34,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 08:03:34,398 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.421052631578947) internal successors, (217), 19 states have internal predecessors, (217), 6 states have call successors, (88), 4 states have call predecessors, (88), 6 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) Word has length 285 [2024-12-02 08:03:34,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:34,400 INFO L225 Difference]: With dead ends: 1259 [2024-12-02 08:03:34,400 INFO L226 Difference]: Without dead ends: 898 [2024-12-02 08:03:34,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 08:03:34,401 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 1211 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:34,401 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 989 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:03:34,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-12-02 08:03:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 788. [2024-12-02 08:03:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 719 states have (on average 1.3796940194714882) internal successors, (992), 719 states have internal predecessors, (992), 60 states have call successors, (60), 8 states have call predecessors, (60), 8 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 08:03:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1112 transitions. [2024-12-02 08:03:34,466 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1112 transitions. Word has length 285 [2024-12-02 08:03:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:34,466 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1112 transitions. [2024-12-02 08:03:34,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.421052631578947) internal successors, (217), 19 states have internal predecessors, (217), 6 states have call successors, (88), 4 states have call predecessors, (88), 6 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) [2024-12-02 08:03:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1112 transitions. [2024-12-02 08:03:34,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-12-02 08:03:34,468 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:34,468 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:34,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:03:34,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:34,668 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:34,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:34,669 INFO L85 PathProgramCache]: Analyzing trace with hash 79350780, now seen corresponding path program 1 times [2024-12-02 08:03:34,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:34,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176990242] [2024-12-02 08:03:34,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:34,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:03:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176990242] [2024-12-02 08:03:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176990242] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754440750] [2024-12-02 08:03:35,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:35,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:35,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:35,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:03:35,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:03:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:35,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-02 08:03:35,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:03:37,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 2095 proven. 87 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2024-12-02 08:03:37,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:03:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754440750] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:39,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:03:39,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 20 [2024-12-02 08:03:39,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222111267] [2024-12-02 08:03:39,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:03:39,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 08:03:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:39,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 08:03:39,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2024-12-02 08:03:39,964 INFO L87 Difference]: Start difference. First operand 788 states and 1112 transitions. Second operand has 20 states, 20 states have (on average 7.7) internal successors, (154), 19 states have internal predecessors, (154), 7 states have call successors, (80), 6 states have call predecessors, (80), 8 states have return successors, (80), 7 states have call predecessors, (80), 7 states have call successors, (80) [2024-12-02 08:03:41,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:41,901 INFO L93 Difference]: Finished difference Result 2313 states and 3277 transitions. [2024-12-02 08:03:41,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 08:03:41,902 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 19 states have internal predecessors, (154), 7 states have call successors, (80), 6 states have call predecessors, (80), 8 states have return successors, (80), 7 states have call predecessors, (80), 7 states have call successors, (80) Word has length 285 [2024-12-02 08:03:41,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:41,906 INFO L225 Difference]: With dead ends: 2313 [2024-12-02 08:03:41,906 INFO L226 Difference]: Without dead ends: 1809 [2024-12-02 08:03:41,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=550, Invalid=2642, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 08:03:41,908 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 1231 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:41,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 911 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:03:41,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2024-12-02 08:03:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1424. [2024-12-02 08:03:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1283 states have (on average 1.3764614185502728) internal successors, (1766), 1283 states have internal predecessors, (1766), 120 states have call successors, (120), 20 states have call predecessors, (120), 20 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 08:03:42,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2006 transitions. [2024-12-02 08:03:42,036 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2006 transitions. Word has length 285 [2024-12-02 08:03:42,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:42,037 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 2006 transitions. [2024-12-02 08:03:42,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.7) internal successors, (154), 19 states have internal predecessors, (154), 7 states have call successors, (80), 6 states have call predecessors, (80), 8 states have return successors, (80), 7 states have call predecessors, (80), 7 states have call successors, (80) [2024-12-02 08:03:42,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2006 transitions. [2024-12-02 08:03:42,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-12-02 08:03:42,038 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:42,039 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:42,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:03:42,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:42,239 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:42,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:42,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1144326875, now seen corresponding path program 1 times [2024-12-02 08:03:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:42,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594028524] [2024-12-02 08:03:42,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:42,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:03:42,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594028524] [2024-12-02 08:03:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594028524] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474943137] [2024-12-02 08:03:42,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:42,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:42,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:42,621 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:03:42,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:03:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:42,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 08:03:42,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:03:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 1632 proven. 51 refuted. 0 times theorem prover too weak. 1495 trivial. 0 not checked. [2024-12-02 08:03:43,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:03:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 119 proven. 51 refuted. 0 times theorem prover too weak. 3008 trivial. 0 not checked. [2024-12-02 08:03:43,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474943137] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:03:43,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:03:43,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-12-02 08:03:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173721487] [2024-12-02 08:03:43,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:03:43,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 08:03:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:43,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 08:03:43,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 08:03:43,274 INFO L87 Difference]: Start difference. First operand 1424 states and 2006 transitions. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 4 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2024-12-02 08:03:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:45,352 INFO L93 Difference]: Finished difference Result 2506 states and 3538 transitions. [2024-12-02 08:03:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 08:03:45,352 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 4 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) Word has length 286 [2024-12-02 08:03:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:45,357 INFO L225 Difference]: With dead ends: 2506 [2024-12-02 08:03:45,358 INFO L226 Difference]: Without dead ends: 1431 [2024-12-02 08:03:45,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 575 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=477, Invalid=1685, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 08:03:45,361 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 1390 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:45,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 771 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 08:03:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2024-12-02 08:03:45,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1077. [2024-12-02 08:03:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 930 states have (on average 1.3333333333333333) internal successors, (1240), 930 states have internal predecessors, (1240), 120 states have call successors, (120), 26 states have call predecessors, (120), 26 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 08:03:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1480 transitions. [2024-12-02 08:03:45,605 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1480 transitions. Word has length 286 [2024-12-02 08:03:45,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:45,606 INFO L471 AbstractCegarLoop]: Abstraction has 1077 states and 1480 transitions. [2024-12-02 08:03:45,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 4 states have call successors, (94), 2 states have call predecessors, (94), 4 states have return successors, (96), 4 states have call predecessors, (96), 4 states have call successors, (96) [2024-12-02 08:03:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1480 transitions. [2024-12-02 08:03:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-12-02 08:03:45,609 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:45,609 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:45,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:03:45,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-12-02 08:03:45,810 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:45,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash -263203124, now seen corresponding path program 1 times [2024-12-02 08:03:45,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:45,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561182858] [2024-12-02 08:03:45,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 8 proven. 51 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:03:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561182858] [2024-12-02 08:03:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561182858] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817349279] [2024-12-02 08:03:48,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:48,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:48,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:48,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:03:48,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:03:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:48,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:03:48,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:03:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 165 proven. 1704 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-12-02 08:03:50,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:03:52,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817349279] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:52,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:03:52,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2024-12-02 08:03:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904640788] [2024-12-02 08:03:52,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:03:52,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 08:03:52,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:52,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 08:03:52,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:03:52,023 INFO L87 Difference]: Start difference. First operand 1077 states and 1480 transitions. Second operand has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-12-02 08:03:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:54,653 INFO L93 Difference]: Finished difference Result 2423 states and 3351 transitions. [2024-12-02 08:03:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 08:03:54,654 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 286 [2024-12-02 08:03:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:54,657 INFO L225 Difference]: With dead ends: 2423 [2024-12-02 08:03:54,657 INFO L226 Difference]: Without dead ends: 1719 [2024-12-02 08:03:54,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=435, Invalid=1635, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 08:03:54,659 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 1178 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 1946 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:54,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1649 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1946 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 08:03:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-12-02 08:03:54,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1389. [2024-12-02 08:03:54,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 1194 states have (on average 1.3190954773869348) internal successors, (1575), 1194 states have internal predecessors, (1575), 160 states have call successors, (160), 34 states have call predecessors, (160), 34 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2024-12-02 08:03:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1895 transitions. [2024-12-02 08:03:54,807 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1895 transitions. Word has length 286 [2024-12-02 08:03:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:54,807 INFO L471 AbstractCegarLoop]: Abstraction has 1389 states and 1895 transitions. [2024-12-02 08:03:54,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.75) internal successors, (135), 20 states have internal predecessors, (135), 4 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-12-02 08:03:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1895 transitions. [2024-12-02 08:03:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-12-02 08:03:54,809 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:54,809 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:54,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:03:55,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-12-02 08:03:55,010 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:55,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1284271478, now seen corresponding path program 1 times [2024-12-02 08:03:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801987100] [2024-12-02 08:03:55,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:03:56,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801987100] [2024-12-02 08:03:56,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801987100] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:03:56,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674439635] [2024-12-02 08:03:56,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:56,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:03:56,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:03:56,839 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:03:56,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:03:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:57,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-02 08:03:57,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:03:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 164 proven. 1705 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-12-02 08:03:59,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:04:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:04:01,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674439635] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:04:01,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:04:01,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 36 [2024-12-02 08:04:01,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815999670] [2024-12-02 08:04:01,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:04:01,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 08:04:01,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:01,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 08:04:01,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 08:04:01,986 INFO L87 Difference]: Start difference. First operand 1389 states and 1895 transitions. Second operand has 36 states, 36 states have (on average 7.166666666666667) internal successors, (258), 36 states have internal predecessors, (258), 8 states have call successors, (120), 4 states have call predecessors, (120), 5 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) [2024-12-02 08:04:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:04:09,579 INFO L93 Difference]: Finished difference Result 4268 states and 5833 transitions. [2024-12-02 08:04:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 08:04:09,580 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.166666666666667) internal successors, (258), 36 states have internal predecessors, (258), 8 states have call successors, (120), 4 states have call predecessors, (120), 5 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) Word has length 286 [2024-12-02 08:04:09,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:04:09,588 INFO L225 Difference]: With dead ends: 4268 [2024-12-02 08:04:09,588 INFO L226 Difference]: Without dead ends: 3284 [2024-12-02 08:04:09,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=718, Invalid=4538, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 08:04:09,591 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 2572 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 5226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:04:09,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 3170 Invalid, 5226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 08:04:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2024-12-02 08:04:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 2431. [2024-12-02 08:04:09,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2431 states, 2044 states have (on average 1.3145792563600782) internal successors, (2687), 2044 states have internal predecessors, (2687), 320 states have call successors, (320), 66 states have call predecessors, (320), 66 states have return successors, (320), 320 states have call predecessors, (320), 320 states have call successors, (320) [2024-12-02 08:04:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3327 transitions. [2024-12-02 08:04:09,878 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3327 transitions. Word has length 286 [2024-12-02 08:04:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:04:09,878 INFO L471 AbstractCegarLoop]: Abstraction has 2431 states and 3327 transitions. [2024-12-02 08:04:09,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.166666666666667) internal successors, (258), 36 states have internal predecessors, (258), 8 states have call successors, (120), 4 states have call predecessors, (120), 5 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) [2024-12-02 08:04:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3327 transitions. [2024-12-02 08:04:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-12-02 08:04:09,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:04:09,880 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:04:09,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:04:10,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-12-02 08:04:10,081 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:04:10,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:04:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash 490735884, now seen corresponding path program 1 times [2024-12-02 08:04:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:04:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110540325] [2024-12-02 08:04:10,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:04:10,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:04:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:04:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:04:14,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:04:14,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110540325] [2024-12-02 08:04:14,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110540325] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:04:14,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966438981] [2024-12-02 08:04:14,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:04:14,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:04:14,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:04:14,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:04:14,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:04:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:04:14,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:04:14,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:04:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-12-02 08:04:16,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:04:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-12-02 08:04:24,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966438981] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:04:24,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:04:24,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17, 12] total 35 [2024-12-02 08:04:24,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928295053] [2024-12-02 08:04:24,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:04:24,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:04:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:04:24,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:04:24,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 08:04:24,958 INFO L87 Difference]: Start difference. First operand 2431 states and 3327 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:04:33,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:04:37,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:04:40,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:04:48,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:04:50,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:04:57,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:01,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:04,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:09,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:14,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:16,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:18,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:05:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:05:18,515 INFO L93 Difference]: Finished difference Result 4385 states and 5990 transitions. [2024-12-02 08:05:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:05:18,516 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 286 [2024-12-02 08:05:18,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:05:18,521 INFO L225 Difference]: With dead ends: 4385 [2024-12-02 08:05:18,522 INFO L226 Difference]: Without dead ends: 3366 [2024-12-02 08:05:18,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=191, Invalid=1369, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 08:05:18,524 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 280 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:05:18,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1127 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 886 Invalid, 4 Unknown, 0 Unchecked, 49.0s Time] [2024-12-02 08:05:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2024-12-02 08:05:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 2575. [2024-12-02 08:05:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 2188 states have (on average 1.3217550274223036) internal successors, (2892), 2188 states have internal predecessors, (2892), 320 states have call successors, (320), 66 states have call predecessors, (320), 66 states have return successors, (320), 320 states have call predecessors, (320), 320 states have call successors, (320) [2024-12-02 08:05:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3532 transitions. [2024-12-02 08:05:18,845 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3532 transitions. Word has length 286 [2024-12-02 08:05:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:05:18,846 INFO L471 AbstractCegarLoop]: Abstraction has 2575 states and 3532 transitions. [2024-12-02 08:05:18,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:05:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3532 transitions. [2024-12-02 08:05:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-12-02 08:05:18,848 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:05:18,848 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:18,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 08:05:19,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-12-02 08:05:19,048 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:05:19,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:19,049 INFO L85 PathProgramCache]: Analyzing trace with hash 137867660, now seen corresponding path program 1 times [2024-12-02 08:05:19,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:19,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809072973] [2024-12-02 08:05:19,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:05:19,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:05:22,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:05:22,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809072973] [2024-12-02 08:05:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809072973] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194489446] [2024-12-02 08:05:22,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:05:22,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:05:22,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:05:22,190 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:05:22,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:05:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:05:22,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 08:05:22,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:05:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3179 backedges. 1658 proven. 1 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-12-02 08:05:25,064 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:05:43,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194489446] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:43,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:05:43,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16] total 26 [2024-12-02 08:05:43,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503009353] [2024-12-02 08:05:43,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:05:43,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 08:05:43,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:43,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 08:05:43,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=961, Unknown=1, NotChecked=0, Total=1122 [2024-12-02 08:05:43,595 INFO L87 Difference]: Start difference. First operand 2575 states and 3532 transitions. Second operand has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-12-02 08:05:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:05:51,281 INFO L93 Difference]: Finished difference Result 5628 states and 7710 transitions. [2024-12-02 08:05:51,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 08:05:51,281 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) Word has length 286 [2024-12-02 08:05:51,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:05:51,287 INFO L225 Difference]: With dead ends: 5628 [2024-12-02 08:05:51,287 INFO L226 Difference]: Without dead ends: 3458 [2024-12-02 08:05:51,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=612, Invalid=3419, Unknown=1, NotChecked=0, Total=4032 [2024-12-02 08:05:51,291 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 1079 mSDsluCounter, 3575 mSDsCounter, 0 mSdLazyCounter, 3792 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 3892 SdHoareTripleChecker+Invalid, 4101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 3792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:05:51,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 3892 Invalid, 4101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 3792 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-12-02 08:05:51,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3458 states. [2024-12-02 08:05:51,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3458 to 2936. [2024-12-02 08:05:51,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2501 states have (on average 1.319872051179528) internal successors, (3301), 2501 states have internal predecessors, (3301), 360 states have call successors, (360), 74 states have call predecessors, (360), 74 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2024-12-02 08:05:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4021 transitions. [2024-12-02 08:05:51,697 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4021 transitions. Word has length 286 [2024-12-02 08:05:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:05:51,697 INFO L471 AbstractCegarLoop]: Abstraction has 2936 states and 4021 transitions. [2024-12-02 08:05:51,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.8076923076923075) internal successors, (177), 26 states have internal predecessors, (177), 4 states have call successors, (80), 3 states have call predecessors, (80), 3 states have return successors, (80), 4 states have call predecessors, (80), 4 states have call successors, (80) [2024-12-02 08:05:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4021 transitions. [2024-12-02 08:05:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-12-02 08:05:51,700 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:05:51,700 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:51,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:05:51,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-12-02 08:05:51,901 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:05:51,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1005218772, now seen corresponding path program 1 times [2024-12-02 08:05:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:51,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261606389] [2024-12-02 08:05:51,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:05:51,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:05:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 5 proven. 53 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:05:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261606389] [2024-12-02 08:05:55,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261606389] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:05:55,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355065686] [2024-12-02 08:05:55,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:05:55,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:05:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:05:55,126 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:05:55,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:05:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:05:55,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-12-02 08:05:55,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:05:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-12-02 08:05:57,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:06:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-12-02 08:06:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355065686] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:06:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:06:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18, 12] total 36 [2024-12-02 08:06:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422478191] [2024-12-02 08:06:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:06:01,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:06:01,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:06:01,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:06:01,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 08:06:01,881 INFO L87 Difference]: Start difference. First operand 2936 states and 4021 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:06:08,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:11,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:19,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:24,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:27,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:31,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:35,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:40,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:43,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:49,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:57,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:06:59,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:01,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:05,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:09,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:11,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:16,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:21,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:25,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:29,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:32,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:33,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:41,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:46,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:51,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:57,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:07:58,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:03,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:04,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:06,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:08,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:13,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:16,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:21,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:26,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:30,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:33,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:37,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:42,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:46,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-12-02 08:08:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:08:47,177 INFO L93 Difference]: Finished difference Result 5528 states and 7601 transitions. [2024-12-02 08:08:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 08:08:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 287 [2024-12-02 08:08:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:08:47,187 INFO L225 Difference]: With dead ends: 5528 [2024-12-02 08:08:47,187 INFO L226 Difference]: Without dead ends: 4365 [2024-12-02 08:08:47,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 08:08:47,190 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 393 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 88 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 156.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:08:47,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1398 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 934 Invalid, 20 Unknown, 0 Unchecked, 156.5s Time] [2024-12-02 08:08:47,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2024-12-02 08:08:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 2859. [2024-12-02 08:08:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2424 states have (on average 1.3172442244224423) internal successors, (3193), 2424 states have internal predecessors, (3193), 360 states have call successors, (360), 74 states have call predecessors, (360), 74 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2024-12-02 08:08:47,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3913 transitions. [2024-12-02 08:08:47,694 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3913 transitions. Word has length 287 [2024-12-02 08:08:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:08:47,694 INFO L471 AbstractCegarLoop]: Abstraction has 2859 states and 3913 transitions. [2024-12-02 08:08:47,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-12-02 08:08:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3913 transitions. [2024-12-02 08:08:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-12-02 08:08:47,698 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:08:47,698 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:08:47,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 08:08:47,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:08:47,899 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:08:47,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:08:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash -616871941, now seen corresponding path program 1 times [2024-12-02 08:08:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:08:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871837730] [2024-12-02 08:08:47,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:08:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:08:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:08:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:08:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:08:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871837730] [2024-12-02 08:08:48,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871837730] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:08:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80050730] [2024-12-02 08:08:48,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:08:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:08:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:08:48,276 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:08:48,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:08:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:08:48,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:08:48,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:08:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 23 proven. 1635 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-12-02 08:08:49,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:08:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 23 proven. 35 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:08:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80050730] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:08:50,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:08:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-12-02 08:08:50,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999957400] [2024-12-02 08:08:50,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:08:50,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 08:08:50,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:08:50,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 08:08:50,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:08:50,286 INFO L87 Difference]: Start difference. First operand 2859 states and 3913 transitions. Second operand has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 states have internal predecessors, (176), 5 states have call successors, (120), 3 states have call predecessors, (120), 3 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2024-12-02 08:08:51,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:08:51,967 INFO L93 Difference]: Finished difference Result 4501 states and 6175 transitions. [2024-12-02 08:08:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 08:08:51,967 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 states have internal predecessors, (176), 5 states have call successors, (120), 3 states have call predecessors, (120), 3 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) Word has length 287 [2024-12-02 08:08:51,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:08:51,975 INFO L225 Difference]: With dead ends: 4501 [2024-12-02 08:08:51,975 INFO L226 Difference]: Without dead ends: 3415 [2024-12-02 08:08:51,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 570 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2024-12-02 08:08:51,977 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 1175 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 08:08:51,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1295 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 08:08:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3415 states. [2024-12-02 08:08:52,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3415 to 2859. [2024-12-02 08:08:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2859 states, 2424 states have (on average 1.316006600660066) internal successors, (3190), 2424 states have internal predecessors, (3190), 360 states have call successors, (360), 74 states have call predecessors, (360), 74 states have return successors, (360), 360 states have call predecessors, (360), 360 states have call successors, (360) [2024-12-02 08:08:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3910 transitions. [2024-12-02 08:08:52,412 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3910 transitions. Word has length 287 [2024-12-02 08:08:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:08:52,412 INFO L471 AbstractCegarLoop]: Abstraction has 2859 states and 3910 transitions. [2024-12-02 08:08:52,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.0) internal successors, (176), 16 states have internal predecessors, (176), 5 states have call successors, (120), 3 states have call predecessors, (120), 3 states have return successors, (120), 5 states have call predecessors, (120), 5 states have call successors, (120) [2024-12-02 08:08:52,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3910 transitions. [2024-12-02 08:08:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2024-12-02 08:08:52,416 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:08:52,417 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:08:52,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 08:08:52,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:08:52,617 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:08:52,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:08:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash 366971732, now seen corresponding path program 1 times [2024-12-02 08:08:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:08:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712407996] [2024-12-02 08:08:52,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:08:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:08:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:08:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:08:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:08:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712407996] [2024-12-02 08:08:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712407996] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:08:58,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100791007] [2024-12-02 08:08:58,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:08:58,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:08:58,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:08:58,808 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:08:58,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 08:08:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:08:59,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 08:08:59,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 366 proven. 1674 refuted. 0 times theorem prover too weak. 1138 trivial. 0 not checked. [2024-12-02 08:09:01,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:09:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 41 proven. 134 refuted. 0 times theorem prover too weak. 3003 trivial. 0 not checked. [2024-12-02 08:09:01,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100791007] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:09:01,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:09:01,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 33 [2024-12-02 08:09:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370338012] [2024-12-02 08:09:01,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:09:01,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 08:09:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:01,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 08:09:01,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=951, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 08:09:01,960 INFO L87 Difference]: Start difference. First operand 2859 states and 3910 transitions. Second operand has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 8 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) [2024-12-02 08:09:14,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:14,249 INFO L93 Difference]: Finished difference Result 6218 states and 8499 transitions. [2024-12-02 08:09:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-12-02 08:09:14,250 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 8 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) Word has length 287 [2024-12-02 08:09:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:14,256 INFO L225 Difference]: With dead ends: 6218 [2024-12-02 08:09:14,256 INFO L226 Difference]: Without dead ends: 4005 [2024-12-02 08:09:14,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2266 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1168, Invalid=7022, Unknown=0, NotChecked=0, Total=8190 [2024-12-02 08:09:14,259 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 2870 mSDsluCounter, 3485 mSDsCounter, 0 mSdLazyCounter, 5631 mSolverCounterSat, 616 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2883 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 6247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 616 IncrementalHoareTripleChecker+Valid, 5631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:14,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2883 Valid, 3812 Invalid, 6247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [616 Valid, 5631 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-12-02 08:09:14,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4005 states. [2024-12-02 08:09:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4005 to 3332. [2024-12-02 08:09:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3332 states, 2812 states have (on average 1.3068990042674253) internal successors, (3675), 2812 states have internal predecessors, (3675), 420 states have call successors, (420), 99 states have call predecessors, (420), 99 states have return successors, (420), 420 states have call predecessors, (420), 420 states have call successors, (420) [2024-12-02 08:09:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 4515 transitions. [2024-12-02 08:09:14,778 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 4515 transitions. Word has length 287 [2024-12-02 08:09:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:14,778 INFO L471 AbstractCegarLoop]: Abstraction has 3332 states and 4515 transitions. [2024-12-02 08:09:14,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 7.575757575757576) internal successors, (250), 33 states have internal predecessors, (250), 8 states have call successors, (120), 4 states have call predecessors, (120), 6 states have return successors, (120), 8 states have call predecessors, (120), 8 states have call successors, (120) [2024-12-02 08:09:14,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 4515 transitions. [2024-12-02 08:09:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-12-02 08:09:14,781 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:14,781 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:14,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 08:09:14,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:14,982 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:14,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1173895970, now seen corresponding path program 1 times [2024-12-02 08:09:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731522109] [2024-12-02 08:09:14,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:09:20,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731522109] [2024-12-02 08:09:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731522109] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:20,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380426726] [2024-12-02 08:09:20,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:20,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:20,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:20,434 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:20,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 08:09:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:21,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 08:09:21,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 611 proven. 1800 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2024-12-02 08:09:25,001 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:09:26,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380426726] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:26,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:09:26,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23] total 35 [2024-12-02 08:09:26,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272073807] [2024-12-02 08:09:26,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 08:09:26,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 08:09:26,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:26,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 08:09:26,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 08:09:26,162 INFO L87 Difference]: Start difference. First operand 3332 states and 4515 transitions. Second operand has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) [2024-12-02 08:09:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:38,050 INFO L93 Difference]: Finished difference Result 7064 states and 9604 transitions. [2024-12-02 08:09:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-12-02 08:09:38,052 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) Word has length 288 [2024-12-02 08:09:38,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:38,057 INFO L225 Difference]: With dead ends: 7064 [2024-12-02 08:09:38,057 INFO L226 Difference]: Without dead ends: 4624 [2024-12-02 08:09:38,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2058 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=704, Invalid=6268, Unknown=0, NotChecked=0, Total=6972 [2024-12-02 08:09:38,060 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 1151 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 3922 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 4134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 3922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:38,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 2059 Invalid, 4134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 3922 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2024-12-02 08:09:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2024-12-02 08:09:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4258. [2024-12-02 08:09:38,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4258 states, 3535 states have (on average 1.3035360678925036) internal successors, (4608), 3539 states have internal predecessors, (4608), 576 states have call successors, (576), 146 states have call predecessors, (576), 146 states have return successors, (576), 572 states have call predecessors, (576), 576 states have call successors, (576) [2024-12-02 08:09:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4258 states to 4258 states and 5760 transitions. [2024-12-02 08:09:38,810 INFO L78 Accepts]: Start accepts. Automaton has 4258 states and 5760 transitions. Word has length 288 [2024-12-02 08:09:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:38,810 INFO L471 AbstractCegarLoop]: Abstraction has 4258 states and 5760 transitions. [2024-12-02 08:09:38,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.771428571428571) internal successors, (202), 34 states have internal predecessors, (202), 8 states have call successors, (80), 7 states have call predecessors, (80), 10 states have return successors, (80), 8 states have call predecessors, (80), 8 states have call successors, (80) [2024-12-02 08:09:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4258 states and 5760 transitions. [2024-12-02 08:09:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-12-02 08:09:38,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:38,814 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:38,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 08:09:39,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-12-02 08:09:39,016 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:39,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash 58663466, now seen corresponding path program 1 times [2024-12-02 08:09:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419935681] [2024-12-02 08:09:39,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 51 proven. 7 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:09:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419935681] [2024-12-02 08:09:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419935681] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896999775] [2024-12-02 08:09:39,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:39,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:39,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:39,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:39,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 08:09:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:39,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 08:09:39,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 14 proven. 1644 refuted. 0 times theorem prover too weak. 1520 trivial. 0 not checked. [2024-12-02 08:09:40,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:09:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:09:40,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896999775] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:40,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 08:09:40,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 8] total 16 [2024-12-02 08:09:40,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702665235] [2024-12-02 08:09:40,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:09:40,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:09:40,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:09:40,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:09:40,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-12-02 08:09:40,425 INFO L87 Difference]: Start difference. First operand 4258 states and 5760 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 08:09:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:09:41,655 INFO L93 Difference]: Finished difference Result 6169 states and 8388 transitions. [2024-12-02 08:09:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:09:41,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 289 [2024-12-02 08:09:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:09:41,663 INFO L225 Difference]: With dead ends: 6169 [2024-12-02 08:09:41,664 INFO L226 Difference]: Without dead ends: 4749 [2024-12-02 08:09:41,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:09:41,666 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 291 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 08:09:41,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 572 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 08:09:41,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4749 states. [2024-12-02 08:09:42,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4749 to 4137. [2024-12-02 08:09:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4137 states, 3439 states have (on average 1.3018319278860133) internal successors, (4477), 3443 states have internal predecessors, (4477), 556 states have call successors, (556), 141 states have call predecessors, (556), 141 states have return successors, (556), 552 states have call predecessors, (556), 556 states have call successors, (556) [2024-12-02 08:09:42,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4137 states to 4137 states and 5589 transitions. [2024-12-02 08:09:42,425 INFO L78 Accepts]: Start accepts. Automaton has 4137 states and 5589 transitions. Word has length 289 [2024-12-02 08:09:42,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:09:42,425 INFO L471 AbstractCegarLoop]: Abstraction has 4137 states and 5589 transitions. [2024-12-02 08:09:42,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2024-12-02 08:09:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 4137 states and 5589 transitions. [2024-12-02 08:09:42,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-12-02 08:09:42,427 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:09:42,427 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:09:42,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 08:09:42,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-12-02 08:09:42,628 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:09:42,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:09:42,628 INFO L85 PathProgramCache]: Analyzing trace with hash -754603350, now seen corresponding path program 1 times [2024-12-02 08:09:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:09:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861435708] [2024-12-02 08:09:42,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:09:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 3 proven. 55 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 08:09:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:09:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861435708] [2024-12-02 08:09:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861435708] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:09:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356704476] [2024-12-02 08:09:52,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:09:52,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:09:52,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:09:52,293 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:09:52,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6c21abf-5637-493f-b010-309aba70904c/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 08:09:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:09:52,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 08:09:52,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:09:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 416 proven. 1705 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2024-12-02 08:09:56,500 INFO L312 TraceCheckSpWp]: Computing backward predicates...