./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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 6abe9611945b9347dad66f4454ebe10d21d58cf2fa4c1fd6e8973cdda78a961e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:04:05,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:04:05,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:04:05,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:04:05,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:04:05,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:04:05,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:04:05,194 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:04:05,194 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:04:05,194 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:04:05,194 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:04:05,194 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:04:05,195 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:04:05,195 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:04:05,195 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:04:05,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:04:05,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:04:05,195 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:04:05,195 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:04:05,196 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:04:05,196 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:04:05,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:04:05,197 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:04:05,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:04:05,198 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:04:05,198 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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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 -> 6abe9611945b9347dad66f4454ebe10d21d58cf2fa4c1fd6e8973cdda78a961e [2024-12-02 06:04:05,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:04:05,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:04:05,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:04:05,483 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:04:05,483 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:04:05,484 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i [2024-12-02 06:04:08,281 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/1b83960be/c28cb6dbeb024f8ebcfccf8d08d59c84/FLAGafde1d28a [2024-12-02 06:04:08,495 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:04:08,496 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i [2024-12-02 06:04:08,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/1b83960be/c28cb6dbeb024f8ebcfccf8d08d59c84/FLAGafde1d28a [2024-12-02 06:04:08,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/1b83960be/c28cb6dbeb024f8ebcfccf8d08d59c84 [2024-12-02 06:04:08,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:04:08,526 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:04:08,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:04:08,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:04:08,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:04:08,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,533 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73db74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08, skipping insertion in model container [2024-12-02 06:04:08,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:04:08,682 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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i[919,932] [2024-12-02 06:04:08,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:04:08,763 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:04:08,773 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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i[919,932] [2024-12-02 06:04:08,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:04:08,824 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:04:08,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08 WrapperNode [2024-12-02 06:04:08,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:04:08,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:04:08,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:04:08,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:04:08,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,883 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 235 [2024-12-02 06:04:08,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:04:08,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:04:08,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:04:08,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:04:08,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,896 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,917 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:04:08,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,928 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:04:08,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:04:08,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:04:08,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:04:08,951 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (1/1) ... [2024-12-02 06:04:08,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:04:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:04:08,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:04:08,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:04:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:04:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:04:09,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:04:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:04:09,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:04:09,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:04:09,088 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:04:09,089 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:04:09,468 INFO L? ?]: Removed 23 outVars from TransFormulas that were not future-live. [2024-12-02 06:04:09,468 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:04:09,479 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:04:09,479 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:04:09,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:09 BoogieIcfgContainer [2024-12-02 06:04:09,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:04:09,482 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:04:09,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:04:09,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:04:09,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:04:08" (1/3) ... [2024-12-02 06:04:09,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a9de4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:09, skipping insertion in model container [2024-12-02 06:04:09,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:04:08" (2/3) ... [2024-12-02 06:04:09,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a9de4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:04:09, skipping insertion in model container [2024-12-02 06:04:09,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:04:09" (3/3) ... [2024-12-02 06:04:09,490 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i [2024-12-02 06:04:09,506 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:04:09,509 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i that has 2 procedures, 97 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:04:09,567 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:04:09,593 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;@2b8c1214, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:04:09,593 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:04:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 06:04:09,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:04:09,610 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:09,611 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:09,612 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:09,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:09,617 INFO L85 PathProgramCache]: Analyzing trace with hash 109598789, now seen corresponding path program 1 times [2024-12-02 06:04:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285264092] [2024-12-02 06:04:09,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:09,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:09,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 06:04:09,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:09,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285264092] [2024-12-02 06:04:09,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285264092] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:04:09,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059185904] [2024-12-02 06:04:09,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:09,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:04:09,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:04:09,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:04:09,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:04:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:10,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:04:10,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:04:10,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 06:04:10,123 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:04:10,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059185904] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:10,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 06:04:10,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 06:04:10,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714028510] [2024-12-02 06:04:10,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:10,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:04:10,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:10,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:04:10,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:04:10,147 INFO L87 Difference]: Start difference. First operand has 97 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:04:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:10,175 INFO L93 Difference]: Finished difference Result 187 states and 329 transitions. [2024-12-02 06:04:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:04:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 174 [2024-12-02 06:04:10,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:10,183 INFO L225 Difference]: With dead ends: 187 [2024-12-02 06:04:10,183 INFO L226 Difference]: Without dead ends: 93 [2024-12-02 06:04:10,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 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 06:04:10,189 INFO L435 NwaCegarLoop]: 146 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, 146 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 06:04:10,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:04:10,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-02 06:04:10,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-12-02 06:04:10,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.4375) internal successors, (92), 64 states have internal predecessors, (92), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 06:04:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 146 transitions. [2024-12-02 06:04:10,229 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 146 transitions. Word has length 174 [2024-12-02 06:04:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:10,229 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 146 transitions. [2024-12-02 06:04:10,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:04:10,230 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 146 transitions. [2024-12-02 06:04:10,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:04:10,233 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:10,233 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:10,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:04:10,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 06:04:10,434 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:10,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash 744198851, now seen corresponding path program 1 times [2024-12-02 06:04:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:10,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402712106] [2024-12-02 06:04:10,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:10,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:10,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402712106] [2024-12-02 06:04:10,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402712106] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:10,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:10,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:04:10,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210000161] [2024-12-02 06:04:10,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:10,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:04:10,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:10,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:04:10,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:04:10,760 INFO L87 Difference]: Start difference. First operand 93 states and 146 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:10,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:10,795 INFO L93 Difference]: Finished difference Result 184 states and 291 transitions. [2024-12-02 06:04:10,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:04:10,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-12-02 06:04:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:10,798 INFO L225 Difference]: With dead ends: 184 [2024-12-02 06:04:10,799 INFO L226 Difference]: Without dead ends: 94 [2024-12-02 06:04:10,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:04:10,800 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:10,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:04:10,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-12-02 06:04:10,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-12-02 06:04:10,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 65 states have internal predecessors, (93), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 06:04:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 147 transitions. [2024-12-02 06:04:10,812 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 147 transitions. Word has length 174 [2024-12-02 06:04:10,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:10,814 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 147 transitions. [2024-12-02 06:04:10,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 147 transitions. [2024-12-02 06:04:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:04:10,817 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:10,817 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:10,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 06:04:10,817 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:10,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1775761083, now seen corresponding path program 1 times [2024-12-02 06:04:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:10,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643123083] [2024-12-02 06:04:10,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:11,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:11,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643123083] [2024-12-02 06:04:11,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643123083] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:11,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 06:04:11,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126987034] [2024-12-02 06:04:11,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:11,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:04:11,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:11,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:04:11,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:04:11,115 INFO L87 Difference]: Start difference. First operand 94 states and 147 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:11,390 INFO L93 Difference]: Finished difference Result 277 states and 436 transitions. [2024-12-02 06:04:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:04:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-12-02 06:04:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:11,393 INFO L225 Difference]: With dead ends: 277 [2024-12-02 06:04:11,393 INFO L226 Difference]: Without dead ends: 186 [2024-12-02 06:04:11,394 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 06:04:11,395 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 114 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:11,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 500 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:04:11,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-12-02 06:04:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 141. [2024-12-02 06:04:11,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 84 states have internal predecessors, (112), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 06:04:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 220 transitions. [2024-12-02 06:04:11,419 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 220 transitions. Word has length 174 [2024-12-02 06:04:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:11,420 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 220 transitions. [2024-12-02 06:04:11,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 220 transitions. [2024-12-02 06:04:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:04:11,422 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:11,423 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:11,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 06:04:11,423 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:11,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1353059257, now seen corresponding path program 1 times [2024-12-02 06:04:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:11,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14502268] [2024-12-02 06:04:11,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:20,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:20,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:20,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14502268] [2024-12-02 06:04:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14502268] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:20,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:20,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 06:04:20,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502964468] [2024-12-02 06:04:20,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:20,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:04:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:20,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:04:20,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:04:20,347 INFO L87 Difference]: Start difference. First operand 141 states and 220 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:24,934 INFO L93 Difference]: Finished difference Result 464 states and 727 transitions. [2024-12-02 06:04:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:04:24,935 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-12-02 06:04:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:24,938 INFO L225 Difference]: With dead ends: 464 [2024-12-02 06:04:24,938 INFO L226 Difference]: Without dead ends: 373 [2024-12-02 06:04:24,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=198, Invalid=614, Unknown=0, NotChecked=0, Total=812 [2024-12-02 06:04:24,940 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 714 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:24,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 1214 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 06:04:24,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2024-12-02 06:04:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 183. [2024-12-02 06:04:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 126 states have internal predecessors, (177), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 06:04:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 285 transitions. [2024-12-02 06:04:24,966 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 285 transitions. Word has length 174 [2024-12-02 06:04:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:24,967 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 285 transitions. [2024-12-02 06:04:24,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 285 transitions. [2024-12-02 06:04:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:04:24,970 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:24,970 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:24,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 06:04:24,970 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:24,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -651994679, now seen corresponding path program 1 times [2024-12-02 06:04:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935625218] [2024-12-02 06:04:24,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:25,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:25,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935625218] [2024-12-02 06:04:25,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935625218] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:25,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:04:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399155966] [2024-12-02 06:04:25,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:25,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:04:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:25,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:04:25,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:04:25,297 INFO L87 Difference]: Start difference. First operand 183 states and 285 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:25,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:25,371 INFO L93 Difference]: Finished difference Result 357 states and 557 transitions. [2024-12-02 06:04:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:04:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-12-02 06:04:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:25,374 INFO L225 Difference]: With dead ends: 357 [2024-12-02 06:04:25,375 INFO L226 Difference]: Without dead ends: 266 [2024-12-02 06:04:25,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:04:25,376 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 169 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:25,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 324 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:04:25,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-12-02 06:04:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 197. [2024-12-02 06:04:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 140 states have (on average 1.4071428571428573) internal successors, (197), 140 states have internal predecessors, (197), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 06:04:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 305 transitions. [2024-12-02 06:04:25,399 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 305 transitions. Word has length 174 [2024-12-02 06:04:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:25,399 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 305 transitions. [2024-12-02 06:04:25,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 305 transitions. [2024-12-02 06:04:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:04:25,402 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:25,402 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:25,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 06:04:25,403 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:25,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 947763333, now seen corresponding path program 1 times [2024-12-02 06:04:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860780527] [2024-12-02 06:04:25,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:25,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860780527] [2024-12-02 06:04:25,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860780527] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:25,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:25,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:04:25,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285247862] [2024-12-02 06:04:25,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:25,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 06:04:25,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:25,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 06:04:25,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:04:25,496 INFO L87 Difference]: Start difference. First operand 197 states and 305 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:25,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:25,548 INFO L93 Difference]: Finished difference Result 388 states and 605 transitions. [2024-12-02 06:04:25,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 06:04:25,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-12-02 06:04:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:25,551 INFO L225 Difference]: With dead ends: 388 [2024-12-02 06:04:25,551 INFO L226 Difference]: Without dead ends: 279 [2024-12-02 06:04:25,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 06:04:25,552 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 138 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:25,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 332 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:04:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-12-02 06:04:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2024-12-02 06:04:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 192 states have (on average 1.3958333333333333) internal successors, (268), 192 states have internal predecessors, (268), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:04:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 430 transitions. [2024-12-02 06:04:25,574 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 430 transitions. Word has length 174 [2024-12-02 06:04:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:25,575 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 430 transitions. [2024-12-02 06:04:25,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:25,575 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 430 transitions. [2024-12-02 06:04:25,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:04:25,577 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:25,577 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:25,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 06:04:25,577 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:25,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1391099721, now seen corresponding path program 1 times [2024-12-02 06:04:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681259301] [2024-12-02 06:04:25,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:31,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:31,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681259301] [2024-12-02 06:04:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681259301] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:31,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:04:31,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710526547] [2024-12-02 06:04:31,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:31,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:04:31,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:31,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:04:31,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:04:31,628 INFO L87 Difference]: Start difference. First operand 277 states and 430 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:35,179 INFO L93 Difference]: Finished difference Result 431 states and 660 transitions. [2024-12-02 06:04:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:04:35,180 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-12-02 06:04:35,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:35,183 INFO L225 Difference]: With dead ends: 431 [2024-12-02 06:04:35,183 INFO L226 Difference]: Without dead ends: 429 [2024-12-02 06:04:35,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2024-12-02 06:04:35,185 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 1183 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:35,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1028 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 06:04:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-12-02 06:04:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 278. [2024-12-02 06:04:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 193 states have (on average 1.3937823834196892) internal successors, (269), 193 states have internal predecessors, (269), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:04:35,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2024-12-02 06:04:35,212 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 175 [2024-12-02 06:04:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:35,213 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2024-12-02 06:04:35,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2024-12-02 06:04:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:04:35,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:35,215 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:35,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 06:04:35,216 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:35,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:35,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1339895313, now seen corresponding path program 1 times [2024-12-02 06:04:35,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:35,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176571716] [2024-12-02 06:04:35,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:35,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:35,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176571716] [2024-12-02 06:04:35,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176571716] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:35,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:35,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:04:35,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016894084] [2024-12-02 06:04:35,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:35,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:04:35,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:35,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:04:35,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:04:35,445 INFO L87 Difference]: Start difference. First operand 278 states and 431 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:35,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:35,496 INFO L93 Difference]: Finished difference Result 529 states and 827 transitions. [2024-12-02 06:04:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:04:35,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-12-02 06:04:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:35,500 INFO L225 Difference]: With dead ends: 529 [2024-12-02 06:04:35,500 INFO L226 Difference]: Without dead ends: 340 [2024-12-02 06:04:35,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:04:35,502 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 47 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:35,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 312 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:04:35,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-12-02 06:04:35,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 278. [2024-12-02 06:04:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 193 states have (on average 1.378238341968912) internal successors, (266), 193 states have internal predecessors, (266), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:04:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 428 transitions. [2024-12-02 06:04:35,527 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 428 transitions. Word has length 175 [2024-12-02 06:04:35,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:35,527 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 428 transitions. [2024-12-02 06:04:35,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 428 transitions. [2024-12-02 06:04:35,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:04:35,529 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:35,530 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:35,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 06:04:35,530 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:35,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1943954733, now seen corresponding path program 1 times [2024-12-02 06:04:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:35,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496336049] [2024-12-02 06:04:35,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:35,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:42,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:42,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496336049] [2024-12-02 06:04:42,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496336049] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:42,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 06:04:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850189971] [2024-12-02 06:04:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:42,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:04:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:42,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:04:42,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:04:42,004 INFO L87 Difference]: Start difference. First operand 278 states and 428 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:04:47,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:47,189 INFO L93 Difference]: Finished difference Result 431 states and 654 transitions. [2024-12-02 06:04:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:04:47,190 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 175 [2024-12-02 06:04:47,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:47,192 INFO L225 Difference]: With dead ends: 431 [2024-12-02 06:04:47,192 INFO L226 Difference]: Without dead ends: 429 [2024-12-02 06:04:47,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:04:47,193 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 1015 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:47,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1399 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 06:04:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-12-02 06:04:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 281. [2024-12-02 06:04:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 196 states have (on average 1.3775510204081634) internal successors, (270), 196 states have internal predecessors, (270), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:04:47,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 432 transitions. [2024-12-02 06:04:47,218 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 432 transitions. Word has length 175 [2024-12-02 06:04:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:47,219 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 432 transitions. [2024-12-02 06:04:47,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:04:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 432 transitions. [2024-12-02 06:04:47,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:04:47,221 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:47,222 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:47,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 06:04:47,222 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:47,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1888325872, now seen corresponding path program 1 times [2024-12-02 06:04:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167831861] [2024-12-02 06:04:47,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:47,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167831861] [2024-12-02 06:04:47,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167831861] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:47,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:47,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:04:47,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58613977] [2024-12-02 06:04:47,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:47,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:04:47,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:47,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:04:47,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:04:47,406 INFO L87 Difference]: Start difference. First operand 281 states and 432 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:47,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:04:47,477 INFO L93 Difference]: Finished difference Result 544 states and 835 transitions. [2024-12-02 06:04:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:04:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-12-02 06:04:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:04:47,480 INFO L225 Difference]: With dead ends: 544 [2024-12-02 06:04:47,480 INFO L226 Difference]: Without dead ends: 355 [2024-12-02 06:04:47,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:04:47,482 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 115 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:04:47,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 373 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 06:04:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-12-02 06:04:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 291. [2024-12-02 06:04:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 206 states have (on average 1.3737864077669903) internal successors, (283), 206 states have internal predecessors, (283), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:04:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 445 transitions. [2024-12-02 06:04:47,508 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 445 transitions. Word has length 175 [2024-12-02 06:04:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:04:47,509 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 445 transitions. [2024-12-02 06:04:47,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:04:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 445 transitions. [2024-12-02 06:04:47,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:04:47,511 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:04:47,511 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:04:47,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 06:04:47,511 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:04:47,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:04:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1705576846, now seen corresponding path program 1 times [2024-12-02 06:04:47,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:04:47,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816259420] [2024-12-02 06:04:47,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:04:47,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:04:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:04:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:04:55,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:04:55,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816259420] [2024-12-02 06:04:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816259420] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:04:55,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:04:55,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:04:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066797631] [2024-12-02 06:04:55,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:04:55,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:04:55,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:04:55,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:04:55,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:04:55,215 INFO L87 Difference]: Start difference. First operand 291 states and 445 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:05:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:01,456 INFO L93 Difference]: Finished difference Result 524 states and 790 transitions. [2024-12-02 06:05:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 06:05:01,457 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-12-02 06:05:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:01,460 INFO L225 Difference]: With dead ends: 524 [2024-12-02 06:05:01,460 INFO L226 Difference]: Without dead ends: 522 [2024-12-02 06:05:01,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2024-12-02 06:05:01,462 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 536 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:01,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 1225 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-12-02 06:05:01,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-12-02 06:05:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 335. [2024-12-02 06:05:01,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 250 states have (on average 1.4) internal successors, (350), 250 states have internal predecessors, (350), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:05:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 512 transitions. [2024-12-02 06:05:01,490 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 512 transitions. Word has length 175 [2024-12-02 06:05:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:01,491 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 512 transitions. [2024-12-02 06:05:01,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:05:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 512 transitions. [2024-12-02 06:05:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 06:05:01,494 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:01,494 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:01,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 06:05:01,495 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:01,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:01,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1568322096, now seen corresponding path program 1 times [2024-12-02 06:05:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:01,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730161875] [2024-12-02 06:05:01,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:01,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:05:10,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:10,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730161875] [2024-12-02 06:05:10,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730161875] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:10,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:10,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:05:10,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993656307] [2024-12-02 06:05:10,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:10,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:05:10,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:10,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:05:10,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:05:10,170 INFO L87 Difference]: Start difference. First operand 335 states and 512 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:05:17,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:17,295 INFO L93 Difference]: Finished difference Result 516 states and 782 transitions. [2024-12-02 06:05:17,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:05:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 175 [2024-12-02 06:05:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:17,298 INFO L225 Difference]: With dead ends: 516 [2024-12-02 06:05:17,298 INFO L226 Difference]: Without dead ends: 514 [2024-12-02 06:05:17,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:05:17,299 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 400 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:17,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1262 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 06:05:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-12-02 06:05:17,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 335. [2024-12-02 06:05:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 250 states have (on average 1.4) internal successors, (350), 250 states have internal predecessors, (350), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:05:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 512 transitions. [2024-12-02 06:05:17,325 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 512 transitions. Word has length 175 [2024-12-02 06:05:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:17,325 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 512 transitions. [2024-12-02 06:05:17,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:05:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 512 transitions. [2024-12-02 06:05:17,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:05:17,327 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:17,327 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:17,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 06:05:17,327 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:17,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash 519318307, now seen corresponding path program 1 times [2024-12-02 06:05:17,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:17,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157785496] [2024-12-02 06:05:17,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:05:23,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:23,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157785496] [2024-12-02 06:05:23,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157785496] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:23,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:23,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:05:23,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468528280] [2024-12-02 06:05:23,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:23,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:05:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:23,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:05:23,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:05:23,623 INFO L87 Difference]: Start difference. First operand 335 states and 512 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:05:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:28,928 INFO L93 Difference]: Finished difference Result 499 states and 759 transitions. [2024-12-02 06:05:28,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:05:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2024-12-02 06:05:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:28,930 INFO L225 Difference]: With dead ends: 499 [2024-12-02 06:05:28,930 INFO L226 Difference]: Without dead ends: 497 [2024-12-02 06:05:28,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 06:05:28,932 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 1041 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:28,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1594 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 06:05:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2024-12-02 06:05:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 333. [2024-12-02 06:05:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 248 states have (on average 1.3991935483870968) internal successors, (347), 248 states have internal predecessors, (347), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:05:28,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 509 transitions. [2024-12-02 06:05:28,948 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 509 transitions. Word has length 176 [2024-12-02 06:05:28,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:28,948 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 509 transitions. [2024-12-02 06:05:28,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:05:28,948 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 509 transitions. [2024-12-02 06:05:28,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:05:28,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:28,949 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:28,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 06:05:28,950 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:28,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:28,950 INFO L85 PathProgramCache]: Analyzing trace with hash -245946368, now seen corresponding path program 1 times [2024-12-02 06:05:28,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:28,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829861217] [2024-12-02 06:05:28,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:28,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:05:35,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:35,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829861217] [2024-12-02 06:05:35,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829861217] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:35,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:35,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 06:05:35,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020494451] [2024-12-02 06:05:35,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:35,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:05:35,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:35,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:05:35,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:05:35,947 INFO L87 Difference]: Start difference. First operand 333 states and 509 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:05:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:05:43,871 INFO L93 Difference]: Finished difference Result 551 states and 835 transitions. [2024-12-02 06:05:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:05:43,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-12-02 06:05:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:05:43,874 INFO L225 Difference]: With dead ends: 551 [2024-12-02 06:05:43,874 INFO L226 Difference]: Without dead ends: 549 [2024-12-02 06:05:43,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=280, Invalid=842, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:05:43,875 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 679 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:05:43,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1525 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-12-02 06:05:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2024-12-02 06:05:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 343. [2024-12-02 06:05:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 258 states have (on average 1.3992248062015504) internal successors, (361), 258 states have internal predecessors, (361), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:05:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 523 transitions. [2024-12-02 06:05:43,890 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 523 transitions. Word has length 176 [2024-12-02 06:05:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:05:43,890 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 523 transitions. [2024-12-02 06:05:43,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:05:43,891 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 523 transitions. [2024-12-02 06:05:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:05:43,892 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:05:43,892 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:05:43,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 06:05:43,892 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:05:43,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:05:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 48743206, now seen corresponding path program 1 times [2024-12-02 06:05:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:05:43,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280475224] [2024-12-02 06:05:43,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:05:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:05:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:05:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:05:50,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:05:50,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280475224] [2024-12-02 06:05:50,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280475224] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:05:50,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:05:50,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 06:05:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242347887] [2024-12-02 06:05:50,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:05:50,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:05:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:05:50,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:05:50,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:05:50,570 INFO L87 Difference]: Start difference. First operand 343 states and 523 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:06:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:03,560 INFO L93 Difference]: Finished difference Result 613 states and 930 transitions. [2024-12-02 06:06:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 06:06:03,561 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2024-12-02 06:06:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:03,563 INFO L225 Difference]: With dead ends: 613 [2024-12-02 06:06:03,563 INFO L226 Difference]: Without dead ends: 611 [2024-12-02 06:06:03,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=379, Invalid=1103, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 06:06:03,564 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 799 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:03,564 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [799 Valid, 1562 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-12-02 06:06:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-12-02 06:06:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 345. [2024-12-02 06:06:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.396153846153846) internal successors, (363), 260 states have internal predecessors, (363), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:06:03,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 525 transitions. [2024-12-02 06:06:03,581 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 525 transitions. Word has length 176 [2024-12-02 06:06:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:03,581 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 525 transitions. [2024-12-02 06:06:03,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:06:03,581 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 525 transitions. [2024-12-02 06:06:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:06:03,582 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:03,582 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:03,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 06:06:03,582 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:03,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1834294270, now seen corresponding path program 1 times [2024-12-02 06:06:03,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:03,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283637284] [2024-12-02 06:06:03,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:03,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:06:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283637284] [2024-12-02 06:06:10,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283637284] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:10,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:10,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 06:06:10,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902993257] [2024-12-02 06:06:10,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:10,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:06:10,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:10,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:06:10,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:06:10,783 INFO L87 Difference]: Start difference. First operand 345 states and 525 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:06:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:17,453 INFO L93 Difference]: Finished difference Result 547 states and 831 transitions. [2024-12-02 06:06:17,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 06:06:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-12-02 06:06:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:17,455 INFO L225 Difference]: With dead ends: 547 [2024-12-02 06:06:17,455 INFO L226 Difference]: Without dead ends: 545 [2024-12-02 06:06:17,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 06:06:17,456 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 701 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:17,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1301 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 06:06:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-02 06:06:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 345. [2024-12-02 06:06:17,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.396153846153846) internal successors, (363), 260 states have internal predecessors, (363), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:06:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 525 transitions. [2024-12-02 06:06:17,480 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 525 transitions. Word has length 176 [2024-12-02 06:06:17,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:17,480 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 525 transitions. [2024-12-02 06:06:17,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:06:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 525 transitions. [2024-12-02 06:06:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:06:17,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:17,482 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:17,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 06:06:17,482 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:17,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1539604696, now seen corresponding path program 1 times [2024-12-02 06:06:17,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:17,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291649080] [2024-12-02 06:06:17,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:17,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:06:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291649080] [2024-12-02 06:06:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291649080] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:25,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:25,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 06:06:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946431334] [2024-12-02 06:06:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:25,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 06:06:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:25,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 06:06:25,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:06:25,711 INFO L87 Difference]: Start difference. First operand 345 states and 525 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:06:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:06:35,309 INFO L93 Difference]: Finished difference Result 512 states and 777 transitions. [2024-12-02 06:06:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 06:06:35,310 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2024-12-02 06:06:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:06:35,311 INFO L225 Difference]: With dead ends: 512 [2024-12-02 06:06:35,311 INFO L226 Difference]: Without dead ends: 510 [2024-12-02 06:06:35,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:06:35,312 INFO L435 NwaCegarLoop]: 204 mSDtfsCounter, 488 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:06:35,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1734 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 06:06:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-12-02 06:06:35,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 341. [2024-12-02 06:06:35,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 256 states have (on average 1.39453125) internal successors, (357), 256 states have internal predecessors, (357), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:06:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 519 transitions. [2024-12-02 06:06:35,327 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 519 transitions. Word has length 176 [2024-12-02 06:06:35,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:06:35,327 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 519 transitions. [2024-12-02 06:06:35,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:06:35,328 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 519 transitions. [2024-12-02 06:06:35,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:06:35,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:06:35,328 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:06:35,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 06:06:35,329 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:06:35,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:06:35,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1876519213, now seen corresponding path program 1 times [2024-12-02 06:06:35,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:06:35,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273992041] [2024-12-02 06:06:35,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:06:35,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:06:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:06:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:06:53,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:06:53,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273992041] [2024-12-02 06:06:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273992041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:06:53,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:06:53,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:06:53,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810438932] [2024-12-02 06:06:53,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:06:53,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:06:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:06:53,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:06:53,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:06:53,801 INFO L87 Difference]: Start difference. First operand 341 states and 519 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:07:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:06,785 INFO L93 Difference]: Finished difference Result 623 states and 953 transitions. [2024-12-02 06:07:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:07:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-12-02 06:07:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:06,788 INFO L225 Difference]: With dead ends: 623 [2024-12-02 06:07:06,788 INFO L226 Difference]: Without dead ends: 621 [2024-12-02 06:07:06,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=344, Invalid=916, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:07:06,788 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 533 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:06,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1355 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 06:07:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2024-12-02 06:07:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 346. [2024-12-02 06:07:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 261 states have (on average 1.3984674329501916) internal successors, (365), 261 states have internal predecessors, (365), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:07:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 527 transitions. [2024-12-02 06:07:06,802 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 527 transitions. Word has length 176 [2024-12-02 06:07:06,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:06,802 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 527 transitions. [2024-12-02 06:07:06,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:07:06,803 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 527 transitions. [2024-12-02 06:07:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 06:07:06,803 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:06,804 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:06,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 06:07:06,804 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:06,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1397379729, now seen corresponding path program 1 times [2024-12-02 06:07:06,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:06,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856938883] [2024-12-02 06:07:06,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:06,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:07:28,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:28,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856938883] [2024-12-02 06:07:28,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856938883] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:28,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:28,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:07:28,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538642652] [2024-12-02 06:07:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:28,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:07:28,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:28,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:07:28,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:07:28,137 INFO L87 Difference]: Start difference. First operand 346 states and 527 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:07:40,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:40,538 INFO L93 Difference]: Finished difference Result 559 states and 855 transitions. [2024-12-02 06:07:40,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:07:40,539 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 176 [2024-12-02 06:07:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:40,541 INFO L225 Difference]: With dead ends: 559 [2024-12-02 06:07:40,541 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 06:07:40,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=341, Invalid=849, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:07:40,542 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 759 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:40,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1097 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-12-02 06:07:40,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 06:07:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 342. [2024-12-02 06:07:40,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 257 states have (on average 1.3968871595330739) internal successors, (359), 257 states have internal predecessors, (359), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:07:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 521 transitions. [2024-12-02 06:07:40,566 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 521 transitions. Word has length 176 [2024-12-02 06:07:40,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:40,566 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 521 transitions. [2024-12-02 06:07:40,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 18 states have internal predecessors, (44), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:07:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 521 transitions. [2024-12-02 06:07:40,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 06:07:40,567 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:40,568 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:40,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 06:07:40,568 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:40,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1696599604, now seen corresponding path program 1 times [2024-12-02 06:07:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25421296] [2024-12-02 06:07:40,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:40,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:07:46,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:07:46,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:07:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25421296] [2024-12-02 06:07:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25421296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:07:46,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:07:46,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:07:46,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198394532] [2024-12-02 06:07:46,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:07:46,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:07:46,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:07:46,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:07:46,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:07:46,086 INFO L87 Difference]: Start difference. First operand 342 states and 521 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:07:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:07:56,529 INFO L93 Difference]: Finished difference Result 582 states and 884 transitions. [2024-12-02 06:07:56,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:07:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-12-02 06:07:56,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:07:56,531 INFO L225 Difference]: With dead ends: 582 [2024-12-02 06:07:56,531 INFO L226 Difference]: Without dead ends: 580 [2024-12-02 06:07:56,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 06:07:56,532 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 674 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:07:56,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 2032 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 06:07:56,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-12-02 06:07:56,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 350. [2024-12-02 06:07:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 265 states have (on average 1.3962264150943395) internal successors, (370), 265 states have internal predecessors, (370), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:07:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 532 transitions. [2024-12-02 06:07:56,547 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 532 transitions. Word has length 177 [2024-12-02 06:07:56,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:07:56,547 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 532 transitions. [2024-12-02 06:07:56,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:07:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 532 transitions. [2024-12-02 06:07:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 06:07:56,548 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:07:56,548 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:07:56,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 06:07:56,548 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:07:56,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:07:56,549 INFO L85 PathProgramCache]: Analyzing trace with hash 604222986, now seen corresponding path program 1 times [2024-12-02 06:07:56,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:07:56,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144938795] [2024-12-02 06:07:56,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:07:56,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:07:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:08:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:08:07,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144938795] [2024-12-02 06:08:07,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144938795] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:08:07,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:08:07,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 06:08:07,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857980035] [2024-12-02 06:08:07,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:08:07,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:08:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:08:07,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:08:07,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:08:07,017 INFO L87 Difference]: Start difference. First operand 350 states and 532 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:08:17,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:08:17,964 INFO L93 Difference]: Finished difference Result 542 states and 824 transitions. [2024-12-02 06:08:17,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 06:08:17,965 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-12-02 06:08:17,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:08:17,967 INFO L225 Difference]: With dead ends: 542 [2024-12-02 06:08:17,967 INFO L226 Difference]: Without dead ends: 540 [2024-12-02 06:08:17,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:08:17,968 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 647 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:08:17,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1988 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-12-02 06:08:17,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-12-02 06:08:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 340. [2024-12-02 06:08:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 255 states have (on average 1.396078431372549) internal successors, (356), 255 states have internal predecessors, (356), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:08:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 518 transitions. [2024-12-02 06:08:17,982 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 518 transitions. Word has length 177 [2024-12-02 06:08:17,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:08:17,982 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 518 transitions. [2024-12-02 06:08:17,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:08:17,982 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 518 transitions. [2024-12-02 06:08:17,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 06:08:17,983 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:08:17,983 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:08:17,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 06:08:17,984 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:08:17,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:08:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1693091589, now seen corresponding path program 1 times [2024-12-02 06:08:17,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:08:17,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194765082] [2024-12-02 06:08:17,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:17,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:08:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:08:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:08:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:08:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194765082] [2024-12-02 06:08:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194765082] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:08:35,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:08:35,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-12-02 06:08:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519909924] [2024-12-02 06:08:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:08:35,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 06:08:35,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:08:35,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 06:08:35,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:08:35,356 INFO L87 Difference]: Start difference. First operand 340 states and 518 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:08:53,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:08:53,578 INFO L93 Difference]: Finished difference Result 559 states and 855 transitions. [2024-12-02 06:08:53,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:08:53,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-12-02 06:08:53,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:08:53,580 INFO L225 Difference]: With dead ends: 559 [2024-12-02 06:08:53,580 INFO L226 Difference]: Without dead ends: 557 [2024-12-02 06:08:53,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 06:08:53,585 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 532 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:08:53,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1490 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-12-02 06:08:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-12-02 06:08:53,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 345. [2024-12-02 06:08:53,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.396153846153846) internal successors, (363), 260 states have internal predecessors, (363), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:08:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 525 transitions. [2024-12-02 06:08:53,599 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 525 transitions. Word has length 177 [2024-12-02 06:08:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:08:53,599 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 525 transitions. [2024-12-02 06:08:53,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:08:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 525 transitions. [2024-12-02 06:08:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 06:08:53,600 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:08:53,600 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:08:53,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 06:08:53,600 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:08:53,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:08:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1398402015, now seen corresponding path program 1 times [2024-12-02 06:08:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:08:53,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605806480] [2024-12-02 06:08:53,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:08:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:08:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:09:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:09:11,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:09:11,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605806480] [2024-12-02 06:09:11,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605806480] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:09:11,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:09:11,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 06:09:11,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618728983] [2024-12-02 06:09:11,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:09:11,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 06:09:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:09:11,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 06:09:11,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:09:11,730 INFO L87 Difference]: Start difference. First operand 345 states and 525 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:09:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:09:41,793 INFO L93 Difference]: Finished difference Result 589 states and 902 transitions. [2024-12-02 06:09:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 06:09:41,794 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-12-02 06:09:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:09:41,795 INFO L225 Difference]: With dead ends: 589 [2024-12-02 06:09:41,795 INFO L226 Difference]: Without dead ends: 587 [2024-12-02 06:09:41,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=465, Invalid=1257, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 06:09:41,796 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 575 mSDsluCounter, 1535 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:09:41,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1709 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-12-02 06:09:41,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-12-02 06:09:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 346. [2024-12-02 06:09:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 261 states have (on average 1.3946360153256705) internal successors, (364), 261 states have internal predecessors, (364), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:09:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 526 transitions. [2024-12-02 06:09:41,810 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 526 transitions. Word has length 177 [2024-12-02 06:09:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:09:41,810 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 526 transitions. [2024-12-02 06:09:41,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:09:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 526 transitions. [2024-12-02 06:09:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 06:09:41,811 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:09:41,811 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:09:41,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 06:09:41,811 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:09:41,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:09:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1013527805, now seen corresponding path program 1 times [2024-12-02 06:09:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:09:41,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465820937] [2024-12-02 06:09:41,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:09:41,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:09:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:10:01,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:01,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465820937] [2024-12-02 06:10:01,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465820937] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:01,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:01,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-12-02 06:10:01,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195083811] [2024-12-02 06:10:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:01,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 06:10:01,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:01,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 06:10:01,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-12-02 06:10:01,629 INFO L87 Difference]: Start difference. First operand 346 states and 526 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:10:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:10:16,288 INFO L93 Difference]: Finished difference Result 501 states and 765 transitions. [2024-12-02 06:10:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:10:16,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-12-02 06:10:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:10:16,290 INFO L225 Difference]: With dead ends: 501 [2024-12-02 06:10:16,290 INFO L226 Difference]: Without dead ends: 499 [2024-12-02 06:10:16,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=380, Invalid=952, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 06:10:16,291 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 601 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:10:16,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1372 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-02 06:10:16,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-12-02 06:10:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 346. [2024-12-02 06:10:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 261 states have (on average 1.3946360153256705) internal successors, (364), 261 states have internal predecessors, (364), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:10:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 526 transitions. [2024-12-02 06:10:16,315 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 526 transitions. Word has length 177 [2024-12-02 06:10:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:10:16,316 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 526 transitions. [2024-12-02 06:10:16,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:10:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 526 transitions. [2024-12-02 06:10:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 06:10:16,317 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:10:16,317 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:10:16,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-02 06:10:16,317 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:10:16,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:10:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1308217379, now seen corresponding path program 1 times [2024-12-02 06:10:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:10:16,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471614053] [2024-12-02 06:10:16,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:10:16,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:10:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:10:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:10:35,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:10:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471614053] [2024-12-02 06:10:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471614053] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:10:35,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:10:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 06:10:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632276342] [2024-12-02 06:10:35,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:10:35,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:10:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:10:35,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:10:35,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:10:35,698 INFO L87 Difference]: Start difference. First operand 346 states and 526 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:11:05,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:11:05,785 INFO L93 Difference]: Finished difference Result 527 states and 806 transitions. [2024-12-02 06:11:05,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 06:11:05,785 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-12-02 06:11:05,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:11:05,787 INFO L225 Difference]: With dead ends: 527 [2024-12-02 06:11:05,787 INFO L226 Difference]: Without dead ends: 525 [2024-12-02 06:11:05,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=489, Invalid=1317, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 06:11:05,788 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 755 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:11:05,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1442 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-12-02 06:11:05,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-12-02 06:11:05,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 341. [2024-12-02 06:11:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 256 states have (on average 1.39453125) internal successors, (357), 256 states have internal predecessors, (357), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:11:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 519 transitions. [2024-12-02 06:11:05,801 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 519 transitions. Word has length 177 [2024-12-02 06:11:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:11:05,802 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 519 transitions. [2024-12-02 06:11:05,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:11:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 519 transitions. [2024-12-02 06:11:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 06:11:05,802 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:11:05,803 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:11:05,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 06:11:05,803 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:11:05,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:11:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 243639661, now seen corresponding path program 1 times [2024-12-02 06:11:05,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:11:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902072942] [2024-12-02 06:11:05,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:11:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:11:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:11:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:11:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:11:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902072942] [2024-12-02 06:11:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902072942] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:11:21,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:11:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-12-02 06:11:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094131241] [2024-12-02 06:11:21,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:11:21,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 06:11:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:11:21,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 06:11:21,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2024-12-02 06:11:21,631 INFO L87 Difference]: Start difference. First operand 341 states and 519 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:11:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:11:46,212 INFO L93 Difference]: Finished difference Result 531 states and 811 transitions. [2024-12-02 06:11:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 06:11:46,213 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 178 [2024-12-02 06:11:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:11:46,214 INFO L225 Difference]: With dead ends: 531 [2024-12-02 06:11:46,214 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 06:11:46,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=400, Invalid=1082, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 06:11:46,215 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 584 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:11:46,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1964 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-12-02 06:11:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 06:11:46,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 344. [2024-12-02 06:11:46,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 259 states have (on average 1.393822393822394) internal successors, (361), 259 states have internal predecessors, (361), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-12-02 06:11:46,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 523 transitions. [2024-12-02 06:11:46,229 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 523 transitions. Word has length 178 [2024-12-02 06:11:46,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:11:46,229 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 523 transitions. [2024-12-02 06:11:46,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:11:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 523 transitions. [2024-12-02 06:11:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-12-02 06:11:46,230 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:11:46,231 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:11:46,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-02 06:11:46,231 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:11:46,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:11:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1750505045, now seen corresponding path program 1 times [2024-12-02 06:11:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:11:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845458208] [2024-12-02 06:11:46,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:11:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:11:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:12:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:12:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:12:06,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845458208] [2024-12-02 06:12:06,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845458208] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:12:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:12:06,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-02 06:12:06,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418906060] [2024-12-02 06:12:06,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:12:06,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 06:12:06,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:12:06,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 06:12:06,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:12:06,549 INFO L87 Difference]: Start difference. First operand 344 states and 523 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:12:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:12:50,294 INFO L93 Difference]: Finished difference Result 785 states and 1198 transitions. [2024-12-02 06:12:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-12-02 06:12:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 178 [2024-12-02 06:12:50,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:12:50,296 INFO L225 Difference]: With dead ends: 785 [2024-12-02 06:12:50,296 INFO L226 Difference]: Without dead ends: 783 [2024-12-02 06:12:50,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=518, Invalid=1552, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 06:12:50,297 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 1275 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-12-02 06:12:50,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2768 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2024-12-02 06:12:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-12-02 06:12:50,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 428. [2024-12-02 06:12:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 315 states have (on average 1.3904761904761904) internal successors, (438), 315 states have internal predecessors, (438), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:12:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 654 transitions. [2024-12-02 06:12:50,322 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 654 transitions. Word has length 178 [2024-12-02 06:12:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:12:50,322 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 654 transitions. [2024-12-02 06:12:50,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:12:50,323 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 654 transitions. [2024-12-02 06:12:50,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-12-02 06:12:50,324 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:12:50,325 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:12:50,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-02 06:12:50,325 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:12:50,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:12:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash 641807006, now seen corresponding path program 1 times [2024-12-02 06:12:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:12:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123718902] [2024-12-02 06:12:50,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:12:50,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:12:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:13:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:13:09,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123718902] [2024-12-02 06:13:09,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123718902] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:13:09,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:13:09,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 06:13:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475668950] [2024-12-02 06:13:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:13:09,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:13:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:13:09,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:13:09,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:13:09,008 INFO L87 Difference]: Start difference. First operand 428 states and 654 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:13:18,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:13:18,159 INFO L93 Difference]: Finished difference Result 664 states and 1008 transitions. [2024-12-02 06:13:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:13:18,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 345 [2024-12-02 06:13:18,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:13:18,163 INFO L225 Difference]: With dead ends: 664 [2024-12-02 06:13:18,163 INFO L226 Difference]: Without dead ends: 662 [2024-12-02 06:13:18,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:13:18,163 INFO L435 NwaCegarLoop]: 170 mSDtfsCounter, 443 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-12-02 06:13:18,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1586 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-12-02 06:13:18,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-12-02 06:13:18,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 439. [2024-12-02 06:13:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 326 states have (on average 1.392638036809816) internal successors, (454), 326 states have internal predecessors, (454), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:13:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 670 transitions. [2024-12-02 06:13:18,188 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 670 transitions. Word has length 345 [2024-12-02 06:13:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:13:18,189 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 670 transitions. [2024-12-02 06:13:18,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:13:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 670 transitions. [2024-12-02 06:13:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-12-02 06:13:18,191 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:13:18,191 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:13:18,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-02 06:13:18,191 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:13:18,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:13:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1064508832, now seen corresponding path program 1 times [2024-12-02 06:13:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:13:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611514959] [2024-12-02 06:13:18,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:13:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:13:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:13:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:13:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611514959] [2024-12-02 06:13:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611514959] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:13:30,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:13:30,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 06:13:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967083086] [2024-12-02 06:13:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:13:30,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 06:13:30,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:13:30,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 06:13:30,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-12-02 06:13:30,758 INFO L87 Difference]: Start difference. First operand 439 states and 670 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:13:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:13:39,683 INFO L93 Difference]: Finished difference Result 780 states and 1190 transitions. [2024-12-02 06:13:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:13:39,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 345 [2024-12-02 06:13:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:13:39,686 INFO L225 Difference]: With dead ends: 780 [2024-12-02 06:13:39,686 INFO L226 Difference]: Without dead ends: 778 [2024-12-02 06:13:39,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2024-12-02 06:13:39,687 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 443 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-12-02 06:13:39,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1210 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-12-02 06:13:39,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2024-12-02 06:13:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 430. [2024-12-02 06:13:39,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 317 states have (on average 1.391167192429022) internal successors, (441), 317 states have internal predecessors, (441), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:13:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 657 transitions. [2024-12-02 06:13:39,715 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 657 transitions. Word has length 345 [2024-12-02 06:13:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:13:39,715 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 657 transitions. [2024-12-02 06:13:39,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:13:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 657 transitions. [2024-12-02 06:13:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-12-02 06:13:39,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:13:39,717 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:13:39,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-02 06:13:39,717 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:13:39,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:13:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1192555566, now seen corresponding path program 1 times [2024-12-02 06:13:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:13:39,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688580364] [2024-12-02 06:13:39,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:13:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:13:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:13:57,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:13:57,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:13:57,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688580364] [2024-12-02 06:13:57,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688580364] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:13:57,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:13:57,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 06:13:57,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927288277] [2024-12-02 06:13:57,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:13:57,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:13:57,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:13:57,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:13:57,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:13:57,812 INFO L87 Difference]: Start difference. First operand 430 states and 657 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:14:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:14:09,620 INFO L93 Difference]: Finished difference Result 664 states and 1009 transitions. [2024-12-02 06:14:09,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 06:14:09,621 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 346 [2024-12-02 06:14:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:14:09,623 INFO L225 Difference]: With dead ends: 664 [2024-12-02 06:14:09,623 INFO L226 Difference]: Without dead ends: 662 [2024-12-02 06:14:09,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-12-02 06:14:09,624 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 610 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:14:09,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 1575 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-12-02 06:14:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-12-02 06:14:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 439. [2024-12-02 06:14:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 326 states have (on average 1.392638036809816) internal successors, (454), 326 states have internal predecessors, (454), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:14:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 670 transitions. [2024-12-02 06:14:09,648 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 670 transitions. Word has length 346 [2024-12-02 06:14:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:14:09,648 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 670 transitions. [2024-12-02 06:14:09,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:14:09,648 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 670 transitions. [2024-12-02 06:14:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-12-02 06:14:09,650 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:14:09,650 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:14:09,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-02 06:14:09,650 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:14:09,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:14:09,650 INFO L85 PathProgramCache]: Analyzing trace with hash -639700554, now seen corresponding path program 1 times [2024-12-02 06:14:09,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:14:09,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801175109] [2024-12-02 06:14:09,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:14:09,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:14:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:14:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 5732 trivial. 0 not checked. [2024-12-02 06:14:20,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:14:20,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801175109] [2024-12-02 06:14:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801175109] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:14:20,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:14:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-12-02 06:14:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991851716] [2024-12-02 06:14:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:14:20,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 06:14:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:14:20,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 06:14:20,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-12-02 06:14:20,520 INFO L87 Difference]: Start difference. First operand 439 states and 670 transitions. Second operand has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 3 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2024-12-02 06:14:30,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:14:30,444 INFO L93 Difference]: Finished difference Result 694 states and 1055 transitions. [2024-12-02 06:14:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 06:14:30,445 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 3 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 346 [2024-12-02 06:14:30,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:14:30,448 INFO L225 Difference]: With dead ends: 694 [2024-12-02 06:14:30,448 INFO L226 Difference]: Without dead ends: 692 [2024-12-02 06:14:30,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 06:14:30,449 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 805 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:14:30,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1438 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-12-02 06:14:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-12-02 06:14:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 440. [2024-12-02 06:14:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 327 states have (on average 1.3914373088685015) internal successors, (455), 327 states have internal predecessors, (455), 108 states have call successors, (108), 4 states have call predecessors, (108), 4 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:14:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 671 transitions. [2024-12-02 06:14:30,491 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 671 transitions. Word has length 346 [2024-12-02 06:14:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:14:30,492 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 671 transitions. [2024-12-02 06:14:30,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.470588235294118) internal successors, (76), 17 states have internal predecessors, (76), 3 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2024-12-02 06:14:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 671 transitions. [2024-12-02 06:14:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-12-02 06:14:30,494 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:14:30,494 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:14:30,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-02 06:14:30,495 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:14:30,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:14:30,495 INFO L85 PathProgramCache]: Analyzing trace with hash 5735163, now seen corresponding path program 1 times [2024-12-02 06:14:30,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:14:30,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122142775] [2024-12-02 06:14:30,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:14:30,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:14:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:14:59,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 1 proven. 57 refuted. 0 times theorem prover too weak. 5728 trivial. 0 not checked. [2024-12-02 06:14:59,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:14:59,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122142775] [2024-12-02 06:14:59,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122142775] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:14:59,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977108082] [2024-12-02 06:14:59,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:14:59,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:14:59,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:14:59,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:14:59,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:14:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:14:59,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 06:14:59,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:14:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5786 backedges. 3150 proven. 3 refuted. 0 times theorem prover too weak. 2633 trivial. 0 not checked. [2024-12-02 06:14:59,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:15:00,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977108082] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:15:00,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:15:00,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5] total 21 [2024-12-02 06:15:00,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028562636] [2024-12-02 06:15:00,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:15:00,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 06:15:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:15:00,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 06:15:00,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-12-02 06:15:00,411 INFO L87 Difference]: Start difference. First operand 440 states and 671 transitions. Second operand has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 21 states have internal predecessors, (142), 4 states have call successors, (80), 3 states have call predecessors, (80), 4 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81) [2024-12-02 06:15:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:15:29,444 INFO L93 Difference]: Finished difference Result 1081 states and 1631 transitions. [2024-12-02 06:15:29,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 06:15:29,445 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 21 states have internal predecessors, (142), 4 states have call successors, (80), 3 states have call predecessors, (80), 4 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81) Word has length 346 [2024-12-02 06:15:29,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:15:29,447 INFO L225 Difference]: With dead ends: 1081 [2024-12-02 06:15:29,447 INFO L226 Difference]: Without dead ends: 741 [2024-12-02 06:15:29,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 06:15:29,449 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 723 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-12-02 06:15:29,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1504 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2024-12-02 06:15:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-12-02 06:15:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 477. [2024-12-02 06:15:29,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 360 states have (on average 1.3722222222222222) internal successors, (494), 360 states have internal predecessors, (494), 108 states have call successors, (108), 8 states have call predecessors, (108), 8 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:15:29,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 710 transitions. [2024-12-02 06:15:29,488 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 710 transitions. Word has length 346 [2024-12-02 06:15:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:15:29,488 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 710 transitions. [2024-12-02 06:15:29,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.761904761904762) internal successors, (142), 21 states have internal predecessors, (142), 4 states have call successors, (80), 3 states have call predecessors, (80), 4 states have return successors, (81), 4 states have call predecessors, (81), 4 states have call successors, (81) [2024-12-02 06:15:29,488 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 710 transitions. [2024-12-02 06:15:29,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:15:29,490 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:15:29,490 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:15:29,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 06:15:29,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 06:15:29,690 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:15:29,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:15:29,690 INFO L85 PathProgramCache]: Analyzing trace with hash 980489877, now seen corresponding path program 1 times [2024-12-02 06:15:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:15:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631275823] [2024-12-02 06:15:29,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:15:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:15:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:15:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:15:57,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:15:57,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631275823] [2024-12-02 06:15:57,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631275823] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:15:57,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:15:57,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:15:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485749945] [2024-12-02 06:15:57,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:15:57,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:15:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:15:57,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:15:57,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:15:57,068 INFO L87 Difference]: Start difference. First operand 477 states and 710 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:16:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:16:12,456 INFO L93 Difference]: Finished difference Result 765 states and 1137 transitions. [2024-12-02 06:16:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:16:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 348 [2024-12-02 06:16:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:16:12,459 INFO L225 Difference]: With dead ends: 765 [2024-12-02 06:16:12,459 INFO L226 Difference]: Without dead ends: 763 [2024-12-02 06:16:12,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:16:12,460 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 533 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-12-02 06:16:12,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 1626 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-12-02 06:16:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-12-02 06:16:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 478. [2024-12-02 06:16:12,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 361 states have (on average 1.373961218836565) internal successors, (496), 361 states have internal predecessors, (496), 108 states have call successors, (108), 8 states have call predecessors, (108), 8 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:16:12,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 712 transitions. [2024-12-02 06:16:12,493 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 712 transitions. Word has length 348 [2024-12-02 06:16:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:16:12,494 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 712 transitions. [2024-12-02 06:16:12,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:16:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 712 transitions. [2024-12-02 06:16:12,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:16:12,495 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:16:12,495 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:16:12,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-12-02 06:16:12,495 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:16:12,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:16:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1959751811, now seen corresponding path program 1 times [2024-12-02 06:16:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:16:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536946259] [2024-12-02 06:16:12,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:16:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:16:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:16:26,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:16:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536946259] [2024-12-02 06:16:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536946259] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:16:26,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:16:26,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 06:16:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763468000] [2024-12-02 06:16:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:16:26,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:16:26,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:16:26,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:16:26,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:16:26,025 INFO L87 Difference]: Start difference. First operand 478 states and 712 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:16:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:16:33,201 INFO L93 Difference]: Finished difference Result 1213 states and 1823 transitions. [2024-12-02 06:16:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 06:16:33,203 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 348 [2024-12-02 06:16:33,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:16:33,206 INFO L225 Difference]: With dead ends: 1213 [2024-12-02 06:16:33,206 INFO L226 Difference]: Without dead ends: 913 [2024-12-02 06:16:33,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2024-12-02 06:16:33,208 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 579 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:16:33,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1986 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-12-02 06:16:33,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2024-12-02 06:16:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 490. [2024-12-02 06:16:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 373 states have (on average 1.3753351206434317) internal successors, (513), 373 states have internal predecessors, (513), 108 states have call successors, (108), 8 states have call predecessors, (108), 8 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:16:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 729 transitions. [2024-12-02 06:16:33,266 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 729 transitions. Word has length 348 [2024-12-02 06:16:33,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:16:33,267 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 729 transitions. [2024-12-02 06:16:33,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:16:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 729 transitions. [2024-12-02 06:16:33,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:16:33,269 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:16:33,270 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:16:33,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-12-02 06:16:33,270 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:16:33,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:16:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1142103361, now seen corresponding path program 1 times [2024-12-02 06:16:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:16:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528913067] [2024-12-02 06:16:33,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:33,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:16:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:16:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 06:16:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:16:33,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528913067] [2024-12-02 06:16:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528913067] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:16:33,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:16:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 06:16:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411073621] [2024-12-02 06:16:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:16:33,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 06:16:33,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:16:33,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 06:16:33,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 06:16:33,578 INFO L87 Difference]: Start difference. First operand 490 states and 729 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2024-12-02 06:16:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:16:33,822 INFO L93 Difference]: Finished difference Result 1267 states and 1898 transitions. [2024-12-02 06:16:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:16:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 348 [2024-12-02 06:16:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:16:33,826 INFO L225 Difference]: With dead ends: 1267 [2024-12-02 06:16:33,826 INFO L226 Difference]: Without dead ends: 955 [2024-12-02 06:16:33,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:16:33,827 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 342 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:16:33,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 734 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 06:16:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2024-12-02 06:16:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 674. [2024-12-02 06:16:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 528 states have (on average 1.3920454545454546) internal successors, (735), 528 states have internal predecessors, (735), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 06:16:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1005 transitions. [2024-12-02 06:16:33,908 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1005 transitions. Word has length 348 [2024-12-02 06:16:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:16:33,909 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1005 transitions. [2024-12-02 06:16:33,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2024-12-02 06:16:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1005 transitions. [2024-12-02 06:16:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:16:33,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:16:33,912 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:16:33,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-12-02 06:16:33,912 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:16:33,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:16:33,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2023874786, now seen corresponding path program 1 times [2024-12-02 06:16:33,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:16:33,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291601120] [2024-12-02 06:16:33,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:16:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:16:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:16:42,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:16:42,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291601120] [2024-12-02 06:16:42,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291601120] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:16:42,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:16:42,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 06:16:42,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91189489] [2024-12-02 06:16:42,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:16:42,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:16:42,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:16:42,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:16:42,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-12-02 06:16:42,041 INFO L87 Difference]: Start difference. First operand 674 states and 1005 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:16:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:16:45,833 INFO L93 Difference]: Finished difference Result 1072 states and 1602 transitions. [2024-12-02 06:16:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 06:16:45,834 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 348 [2024-12-02 06:16:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:16:45,836 INFO L225 Difference]: With dead ends: 1072 [2024-12-02 06:16:45,836 INFO L226 Difference]: Without dead ends: 1070 [2024-12-02 06:16:45,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-12-02 06:16:45,837 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 605 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:16:45,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1234 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 06:16:45,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2024-12-02 06:16:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 674. [2024-12-02 06:16:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 528 states have (on average 1.3920454545454546) internal successors, (735), 528 states have internal predecessors, (735), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 06:16:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1005 transitions. [2024-12-02 06:16:45,893 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1005 transitions. Word has length 348 [2024-12-02 06:16:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:16:45,894 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 1005 transitions. [2024-12-02 06:16:45,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:16:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1005 transitions. [2024-12-02 06:16:45,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:16:45,896 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:16:45,896 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:16:45,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-12-02 06:16:45,896 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:16:45,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:16:45,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2065238598, now seen corresponding path program 1 times [2024-12-02 06:16:45,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:16:45,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897535042] [2024-12-02 06:16:45,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:16:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:16:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:16:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 5732 trivial. 0 not checked. [2024-12-02 06:16:59,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:16:59,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897535042] [2024-12-02 06:16:59,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897535042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:16:59,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:16:59,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:16:59,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375769304] [2024-12-02 06:16:59,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:16:59,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:16:59,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:16:59,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:16:59,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:16:59,064 INFO L87 Difference]: Start difference. First operand 674 states and 1005 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-12-02 06:17:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:17:13,727 INFO L93 Difference]: Finished difference Result 1099 states and 1643 transitions. [2024-12-02 06:17:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 06:17:13,728 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 348 [2024-12-02 06:17:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:17:13,731 INFO L225 Difference]: With dead ends: 1099 [2024-12-02 06:17:13,731 INFO L226 Difference]: Without dead ends: 1097 [2024-12-02 06:17:13,731 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2024-12-02 06:17:13,731 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 692 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:17:13,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 939 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-12-02 06:17:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2024-12-02 06:17:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 667. [2024-12-02 06:17:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 521 states have (on average 1.3934740882917467) internal successors, (726), 521 states have internal predecessors, (726), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 06:17:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 996 transitions. [2024-12-02 06:17:13,774 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 996 transitions. Word has length 348 [2024-12-02 06:17:13,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:17:13,774 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 996 transitions. [2024-12-02 06:17:13,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 2 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2024-12-02 06:17:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 996 transitions. [2024-12-02 06:17:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:17:13,776 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:17:13,776 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:17:13,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-12-02 06:17:13,776 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:17:13,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:17:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 763399445, now seen corresponding path program 1 times [2024-12-02 06:17:13,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:17:13,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415185221] [2024-12-02 06:17:13,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:17:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:17:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:17:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5766 trivial. 0 not checked. [2024-12-02 06:17:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:17:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415185221] [2024-12-02 06:17:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415185221] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:17:28,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:17:28,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 06:17:28,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362255167] [2024-12-02 06:17:28,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:17:28,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 06:17:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:17:28,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 06:17:28,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-12-02 06:17:28,323 INFO L87 Difference]: Start difference. First operand 667 states and 996 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:17:37,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:17:37,764 INFO L93 Difference]: Finished difference Result 1358 states and 2032 transitions. [2024-12-02 06:17:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 06:17:37,765 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 348 [2024-12-02 06:17:37,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:17:37,768 INFO L225 Difference]: With dead ends: 1358 [2024-12-02 06:17:37,768 INFO L226 Difference]: Without dead ends: 1356 [2024-12-02 06:17:37,769 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-12-02 06:17:37,769 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 478 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:17:37,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1140 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 06:17:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2024-12-02 06:17:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 666. [2024-12-02 06:17:37,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 520 states have (on average 1.3923076923076922) internal successors, (724), 520 states have internal predecessors, (724), 135 states have call successors, (135), 10 states have call predecessors, (135), 10 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-12-02 06:17:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 994 transitions. [2024-12-02 06:17:37,814 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 994 transitions. Word has length 348 [2024-12-02 06:17:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:17:37,815 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 994 transitions. [2024-12-02 06:17:37,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:17:37,815 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 994 transitions. [2024-12-02 06:17:37,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:17:37,816 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:17:37,817 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:17:37,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-12-02 06:17:37,817 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:17:37,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:17:37,817 INFO L85 PathProgramCache]: Analyzing trace with hash -824948457, now seen corresponding path program 1 times [2024-12-02 06:17:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:17:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648493611] [2024-12-02 06:17:37,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:17:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:17:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:18:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-12-02 06:18:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 06:18:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648493611] [2024-12-02 06:18:00,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648493611] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 06:18:00,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909475217] [2024-12-02 06:18:00,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:18:00,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:00,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:18:00,233 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:18:00,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:18:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:18:00,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:18:00,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:18:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 2975 proven. 78 refuted. 0 times theorem prover too weak. 2734 trivial. 0 not checked. [2024-12-02 06:18:00,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:18:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5787 backedges. 141 proven. 78 refuted. 0 times theorem prover too weak. 5568 trivial. 0 not checked. [2024-12-02 06:18:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909475217] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:18:01,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 06:18:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5, 5] total 28 [2024-12-02 06:18:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315945154] [2024-12-02 06:18:01,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 06:18:01,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 06:18:01,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 06:18:01,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 06:18:01,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2024-12-02 06:18:01,617 INFO L87 Difference]: Start difference. First operand 666 states and 994 transitions. Second operand has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 5 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (133), 5 states have call predecessors, (133), 5 states have call successors, (133) [2024-12-02 06:18:09,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:18:09,212 INFO L93 Difference]: Finished difference Result 2160 states and 3192 transitions. [2024-12-02 06:18:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-12-02 06:18:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 5 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (133), 5 states have call predecessors, (133), 5 states have call successors, (133) Word has length 348 [2024-12-02 06:18:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:18:09,216 INFO L225 Difference]: With dead ends: 2160 [2024-12-02 06:18:09,216 INFO L226 Difference]: Without dead ends: 1453 [2024-12-02 06:18:09,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 769 GetRequests, 705 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=708, Invalid=3452, Unknown=0, NotChecked=0, Total=4160 [2024-12-02 06:18:09,218 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 1343 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-12-02 06:18:09,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 2864 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2508 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-12-02 06:18:09,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2024-12-02 06:18:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 464. [2024-12-02 06:18:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 343 states have (on average 1.338192419825073) internal successors, (459), 343 states have internal predecessors, (459), 108 states have call successors, (108), 12 states have call predecessors, (108), 12 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2024-12-02 06:18:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 675 transitions. [2024-12-02 06:18:09,270 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 675 transitions. Word has length 348 [2024-12-02 06:18:09,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:18:09,270 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 675 transitions. [2024-12-02 06:18:09,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 5 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (133), 5 states have call predecessors, (133), 5 states have call successors, (133) [2024-12-02 06:18:09,270 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 675 transitions. [2024-12-02 06:18:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-12-02 06:18:09,272 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:18:09,272 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-12-02 06:18:09,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 06:18:09,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-02 06:18:09,472 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:18:09,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:18:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash 154313477, now seen corresponding path program 1 times [2024-12-02 06:18:09,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:18:09,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244733074] [2024-12-02 06:18:09,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:18:09,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:18:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:18:15,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-12-02 06:18:15,124 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 06:18:15,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-12-02 06:18:15,125 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:417) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-12-02 06:18:15,128 INFO L158 Benchmark]: Toolchain (without parser) took 846603.28ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 116.7MB in the beginning and 923.1MB in the end (delta: -806.5MB). Peak memory consumption was 179.4MB. Max. memory is 16.1GB. [2024-12-02 06:18:15,129 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:18:15,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.97ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 101.2MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 06:18:15,129 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.98ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 96.2MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:18:15,129 INFO L158 Benchmark]: Boogie Preprocessor took 65.09ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 90.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:18:15,129 INFO L158 Benchmark]: RCFGBuilder took 529.88ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 59.6MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 06:18:15,129 INFO L158 Benchmark]: TraceAbstraction took 845646.28ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 58.8MB in the beginning and 923.1MB in the end (delta: -864.3MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. [2024-12-02 06:18:15,130 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.97ms. Allocated memory is still 142.6MB. Free memory was 116.4MB in the beginning and 101.2MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.98ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 96.2MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.09ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 90.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 529.88ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 59.6MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 845646.28ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 58.8MB in the beginning and 923.1MB in the end (delta: -864.3MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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 6abe9611945b9347dad66f4454ebe10d21d58cf2fa4c1fd6e8973cdda78a961e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:18:16,838 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:18:16,917 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 06:18:16,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:18:16,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:18:16,948 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:18:16,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:18:16,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:18:16,949 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:18:16,949 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:18:16,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:18:16,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:18:16,950 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:18:16,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:18:16,950 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:18:16,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:18:16,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:18:16,950 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 06:18:16,951 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:18:16,952 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:18:16,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:18:16,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:18:16,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:18:16,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:18:16,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:18:16,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:18:16,954 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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/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 -> 6abe9611945b9347dad66f4454ebe10d21d58cf2fa4c1fd6e8973cdda78a961e [2024-12-02 06:18:17,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:18:17,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:18:17,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:18:17,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:18:17,202 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:18:17,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i [2024-12-02 06:18:19,878 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/69e3275f3/738bebe97bb340d49c34178faf24c211/FLAG7f94e50e1 [2024-12-02 06:18:20,050 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:18:20,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i [2024-12-02 06:18:20,059 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/69e3275f3/738bebe97bb340d49c34178faf24c211/FLAG7f94e50e1 [2024-12-02 06:18:20,073 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/data/69e3275f3/738bebe97bb340d49c34178faf24c211 [2024-12-02 06:18:20,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:18:20,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:18:20,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:18:20,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:18:20,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:18:20,082 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b46b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20, skipping insertion in model container [2024-12-02 06:18:20,083 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:18:20,231 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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i[919,932] [2024-12-02 06:18:20,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:18:20,302 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:18:20,312 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_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i[919,932] [2024-12-02 06:18:20,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:18:20,359 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:18:20,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20 WrapperNode [2024-12-02 06:18:20,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:18:20,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:18:20,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:18:20,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:18:20,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,398 INFO L138 Inliner]: procedures = 27, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2024-12-02 06:18:20,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:18:20,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:18:20,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:18:20,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:18:20,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,411 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,422 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:18:20,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,431 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:18:20,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:18:20,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:18:20,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:18:20,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (1/1) ... [2024-12-02 06:18:20,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:18:20,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:18:20,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:18:20,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:18:20,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:18:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 06:18:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 06:18:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 06:18:20,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:18:20,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:18:20,569 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:18:20,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:18:21,042 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 06:18:21,042 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:18:21,053 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:18:21,053 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 06:18:21,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:21 BoogieIcfgContainer [2024-12-02 06:18:21,053 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:18:21,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:18:21,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:18:21,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:18:21,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:18:20" (1/3) ... [2024-12-02 06:18:21,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3154d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:18:21, skipping insertion in model container [2024-12-02 06:18:21,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:18:20" (2/3) ... [2024-12-02 06:18:21,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3154d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:18:21, skipping insertion in model container [2024-12-02 06:18:21,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:18:21" (3/3) ... [2024-12-02 06:18:21,063 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i [2024-12-02 06:18:21,076 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:18:21,078 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-86.i that has 2 procedures, 83 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 06:18:21,120 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:18:21,129 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;@50b644ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:18:21,129 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:18:21,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 54 states have internal predecessors, (77), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 06:18:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 06:18:21,141 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:18:21,142 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:18:21,142 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:18:21,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:18:21,146 INFO L85 PathProgramCache]: Analyzing trace with hash 679376721, now seen corresponding path program 1 times [2024-12-02 06:18:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:18:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1899407281] [2024-12-02 06:18:21,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:18:21,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:21,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:18:21,157 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:18:21,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 06:18:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:18:21,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 06:18:21,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:18:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-12-02 06:18:21,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:18:21,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:18:21,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899407281] [2024-12-02 06:18:21,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899407281] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:18:21,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:18:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 06:18:21,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193050670] [2024-12-02 06:18:21,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:18:21,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 06:18:21,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:18:21,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 06:18:21,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 06:18:21,430 INFO L87 Difference]: Start difference. First operand has 83 states, 53 states have (on average 1.4528301886792452) internal successors, (77), 54 states have internal predecessors, (77), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:18:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:18:21,452 INFO L93 Difference]: Finished difference Result 159 states and 283 transitions. [2024-12-02 06:18:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 06:18:21,454 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 173 [2024-12-02 06:18:21,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:18:21,460 INFO L225 Difference]: With dead ends: 159 [2024-12-02 06:18:21,460 INFO L226 Difference]: Without dead ends: 79 [2024-12-02 06:18:21,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 172 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 06:18:21,466 INFO L435 NwaCegarLoop]: 122 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, 122 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 06:18:21,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 06:18:21,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-02 06:18:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-12-02 06:18:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-12-02 06:18:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 122 transitions. [2024-12-02 06:18:21,504 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 122 transitions. Word has length 173 [2024-12-02 06:18:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:18:21,505 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 122 transitions. [2024-12-02 06:18:21,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-12-02 06:18:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 122 transitions. [2024-12-02 06:18:21,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:18:21,509 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:18:21,509 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:18:21,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 06:18:21,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:21,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:18:21,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:18:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 634964055, now seen corresponding path program 1 times [2024-12-02 06:18:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:18:21,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132435954] [2024-12-02 06:18:21,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:18:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:18:21,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:18:21,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 06:18:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:18:21,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:18:21,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:18:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-12-02 06:18:23,006 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:18:23,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:18:23,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132435954] [2024-12-02 06:18:23,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132435954] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:18:23,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:18:23,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 06:18:23,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911865161] [2024-12-02 06:18:23,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:18:23,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 06:18:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:18:23,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 06:18:23,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:18:23,010 INFO L87 Difference]: Start difference. First operand 79 states and 122 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:18:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:18:23,546 INFO L93 Difference]: Finished difference Result 232 states and 361 transitions. [2024-12-02 06:18:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 06:18:23,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2024-12-02 06:18:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:18:23,554 INFO L225 Difference]: With dead ends: 232 [2024-12-02 06:18:23,555 INFO L226 Difference]: Without dead ends: 156 [2024-12-02 06:18:23,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 06:18:23,556 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 82 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 06:18:23,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 393 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 06:18:23,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-12-02 06:18:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 126. [2024-12-02 06:18:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 69 states have internal predecessors, (87), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 06:18:23,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 195 transitions. [2024-12-02 06:18:23,589 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 195 transitions. Word has length 174 [2024-12-02 06:18:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:18:23,590 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 195 transitions. [2024-12-02 06:18:23,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-12-02 06:18:23,590 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 195 transitions. [2024-12-02 06:18:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-12-02 06:18:23,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:18:23,594 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 06:18:23,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 06:18:23,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:23,795 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:18:23,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:18:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1057665881, now seen corresponding path program 1 times [2024-12-02 06:18:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:18:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188932439] [2024-12-02 06:18:23,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:18:23,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 06:18:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:18:23,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 06:18:23,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5559d83-fcc4-4d4a-8b2a-415e88b79f7a/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 06:18:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:18:23,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 06:18:23,995 INFO L279 TraceCheckSpWp]: Computing forward predicates...