./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c28c916d59e15fbb84eacdc574b21cac712312e1644083eaa396f6071a295218 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:54:41,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:54:41,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:54:41,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:54:41,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:54:41,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:54:41,647 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:54:41,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:54:41,648 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:54:41,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:54:41,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:54:41,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:54:41,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:54:41,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:54:41,649 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:54:41,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:54:41,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:54:41,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:54:41,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:54:41,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:54:41,650 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:54:41,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:54:41,651 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:54:41,651 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:54:41,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:54:41,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:54:41,652 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:54:41,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:54:41,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:54:41,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:54:41,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:54:41,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:54:41,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:54:41,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:54:41,654 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:54:41,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:54:41,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:54:41,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:54:41,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:54:41,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:54:41,655 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:54:41,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:54:41,655 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_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c28c916d59e15fbb84eacdc574b21cac712312e1644083eaa396f6071a295218 [2024-11-28 03:54:42,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:54:42,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:54:42,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:54:42,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:54:42,059 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:54:42,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i [2024-11-28 03:54:45,735 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/data/18cc25c19/d8e2e5842c7c4cb1bb8372eb769820d9/FLAG34d1598a2 [2024-11-28 03:54:46,157 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:54:46,158 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i [2024-11-28 03:54:46,170 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/data/18cc25c19/d8e2e5842c7c4cb1bb8372eb769820d9/FLAG34d1598a2 [2024-11-28 03:54:46,194 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/data/18cc25c19/d8e2e5842c7c4cb1bb8372eb769820d9 [2024-11-28 03:54:46,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:54:46,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:54:46,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:54:46,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:54:46,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:54:46,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,209 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a1b967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46, skipping insertion in model container [2024-11-28 03:54:46,209 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,255 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:54:46,467 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_d02abc33-868f-44da-965f-c36487b1d4ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i[919,932] [2024-11-28 03:54:46,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:54:46,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:54:46,657 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_d02abc33-868f-44da-965f-c36487b1d4ea/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i[919,932] [2024-11-28 03:54:46,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:54:46,768 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:54:46,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46 WrapperNode [2024-11-28 03:54:46,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:54:46,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:54:46,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:54:46,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:54:46,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,853 INFO L138 Inliner]: procedures = 26, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 228 [2024-11-28 03:54:46,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:54:46,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:54:46,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:54:46,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:54:46,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,909 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:54:46,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,925 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:54:46,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:54:46,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:54:46,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:54:46,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (1/1) ... [2024-11-28 03:54:46,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:54:46,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:46,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:54:46,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:54:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:54:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:54:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:54:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:54:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:54:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:54:47,154 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:54:47,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:54:47,813 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-28 03:54:47,813 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:54:47,827 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:54:47,827 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:54:47,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:54:47 BoogieIcfgContainer [2024-11-28 03:54:47,828 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:54:47,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:54:47,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:54:47,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:54:47,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:54:46" (1/3) ... [2024-11-28 03:54:47,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe1e18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:54:47, skipping insertion in model container [2024-11-28 03:54:47,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:54:46" (2/3) ... [2024-11-28 03:54:47,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fe1e18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:54:47, skipping insertion in model container [2024-11-28 03:54:47,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:54:47" (3/3) ... [2024-11-28 03:54:47,866 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i [2024-11-28 03:54:47,885 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:54:47,887 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i that has 2 procedures, 93 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:54:47,956 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:54:47,971 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;@1570c372, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:54:47,971 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:54:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:54:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:54:47,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:47,996 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:47,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:48,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:48,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1439723346, now seen corresponding path program 1 times [2024-11-28 03:54:48,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:48,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440026631] [2024-11-28 03:54:48,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:48,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-28 03:54:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:48,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440026631] [2024-11-28 03:54:48,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440026631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:48,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705997245] [2024-11-28 03:54:48,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:48,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:54:48,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:54:48,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:54:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:48,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:54:48,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:54:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2024-11-28 03:54:48,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:54:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705997245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:48,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:54:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:54:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099453445] [2024-11-28 03:54:48,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:48,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:54:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:48,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:54:48,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:54:48,899 INFO L87 Difference]: Start difference. First operand has 93 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 71 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:54:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:48,950 INFO L93 Difference]: Finished difference Result 179 states and 306 transitions. [2024-11-28 03:54:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:54:48,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2024-11-28 03:54:48,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:48,966 INFO L225 Difference]: With dead ends: 179 [2024-11-28 03:54:48,966 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 03:54:48,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:54:48,974 INFO L435 NwaCegarLoop]: 139 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, 139 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:48,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:54:48,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 03:54:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 03:54:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 67 states have internal predecessors, (99), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-28 03:54:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2024-11-28 03:54:49,042 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 139 transitions. Word has length 141 [2024-11-28 03:54:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:49,042 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 139 transitions. [2024-11-28 03:54:49,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:54:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 139 transitions. [2024-11-28 03:54:49,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:54:49,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:49,049 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:49,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:54:49,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:54:49,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:49,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash -102599018, now seen corresponding path program 1 times [2024-11-28 03:54:49,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:49,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369433970] [2024-11-28 03:54:49,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:49,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:54:50,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:50,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369433970] [2024-11-28 03:54:50,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369433970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:50,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:50,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:54:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863406741] [2024-11-28 03:54:50,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:50,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:54:50,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:50,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:54:50,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:54:50,368 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:54:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:50,672 INFO L93 Difference]: Finished difference Result 301 states and 475 transitions. [2024-11-28 03:54:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:54:50,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 141 [2024-11-28 03:54:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:50,677 INFO L225 Difference]: With dead ends: 301 [2024-11-28 03:54:50,677 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 03:54:50,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:54:50,680 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 172 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:50,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 454 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:54:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 03:54:50,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 175. [2024-11-28 03:54:50,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 132 states have (on average 1.4772727272727273) internal successors, (195), 132 states have internal predecessors, (195), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 03:54:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 275 transitions. [2024-11-28 03:54:50,727 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 275 transitions. Word has length 141 [2024-11-28 03:54:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:50,728 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 275 transitions. [2024-11-28 03:54:50,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:54:50,728 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 275 transitions. [2024-11-28 03:54:50,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-28 03:54:50,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:50,732 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:50,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:54:50,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:50,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:50,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1750704072, now seen corresponding path program 1 times [2024-11-28 03:54:50,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:50,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901261736] [2024-11-28 03:54:50,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:54:51,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901261736] [2024-11-28 03:54:51,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901261736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:51,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:51,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:54:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424420689] [2024-11-28 03:54:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:51,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:54:51,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:51,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:54:51,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:54:51,464 INFO L87 Difference]: Start difference. First operand 175 states and 275 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:54:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:51,973 INFO L93 Difference]: Finished difference Result 514 states and 808 transitions. [2024-11-28 03:54:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:54:51,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 142 [2024-11-28 03:54:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:51,979 INFO L225 Difference]: With dead ends: 514 [2024-11-28 03:54:51,980 INFO L226 Difference]: Without dead ends: 342 [2024-11-28 03:54:51,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:54:51,983 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 170 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:51,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 523 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:54:51,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-28 03:54:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 179. [2024-11-28 03:54:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 136 states have (on average 1.463235294117647) internal successors, (199), 136 states have internal predecessors, (199), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 03:54:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 279 transitions. [2024-11-28 03:54:52,082 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 279 transitions. Word has length 142 [2024-11-28 03:54:52,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:52,085 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 279 transitions. [2024-11-28 03:54:52,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:54:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 279 transitions. [2024-11-28 03:54:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:54:52,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:52,093 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:52,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:54:52,094 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:52,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash -2015514019, now seen corresponding path program 1 times [2024-11-28 03:54:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234565342] [2024-11-28 03:54:52,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:54:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:54:57,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:54:57,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234565342] [2024-11-28 03:54:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234565342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:54:57,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:54:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:54:57,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050132804] [2024-11-28 03:54:57,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:54:57,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:54:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:54:57,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:54:57,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:54:57,038 INFO L87 Difference]: Start difference. First operand 179 states and 279 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:54:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:54:57,833 INFO L93 Difference]: Finished difference Result 588 states and 925 transitions. [2024-11-28 03:54:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:54:57,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-28 03:54:57,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:54:57,837 INFO L225 Difference]: With dead ends: 588 [2024-11-28 03:54:57,837 INFO L226 Difference]: Without dead ends: 412 [2024-11-28 03:54:57,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:54:57,839 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 279 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:54:57,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 426 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:54:57,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-28 03:54:57,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 238. [2024-11-28 03:54:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 174 states have (on average 1.4310344827586208) internal successors, (249), 174 states have internal predecessors, (249), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:54:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 369 transitions. [2024-11-28 03:54:57,907 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 369 transitions. Word has length 143 [2024-11-28 03:54:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:54:57,909 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 369 transitions. [2024-11-28 03:54:57,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:54:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 369 transitions. [2024-11-28 03:54:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:54:57,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:54:57,914 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:54:57,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:54:57,914 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:54:57,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:54:57,915 INFO L85 PathProgramCache]: Analyzing trace with hash 674019886, now seen corresponding path program 1 times [2024-11-28 03:54:57,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:54:57,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203860961] [2024-11-28 03:54:57,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:54:57,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:54:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:55:07,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:07,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203860961] [2024-11-28 03:55:07,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203860961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:07,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:07,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:55:07,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693738675] [2024-11-28 03:55:07,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:07,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:55:07,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:07,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:55:07,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:55:07,352 INFO L87 Difference]: Start difference. First operand 238 states and 369 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:16,409 INFO L93 Difference]: Finished difference Result 705 states and 1094 transitions. [2024-11-28 03:55:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:55:16,410 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-28 03:55:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:16,415 INFO L225 Difference]: With dead ends: 705 [2024-11-28 03:55:16,415 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 03:55:16,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:55:16,420 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 590 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:16,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 574 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 03:55:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 03:55:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 346. [2024-11-28 03:55:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 270 states have (on average 1.4703703703703703) internal successors, (397), 272 states have internal predecessors, (397), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-28 03:55:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 537 transitions. [2024-11-28 03:55:16,498 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 537 transitions. Word has length 143 [2024-11-28 03:55:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:16,499 INFO L471 AbstractCegarLoop]: Abstraction has 346 states and 537 transitions. [2024-11-28 03:55:16,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 537 transitions. [2024-11-28 03:55:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:55:16,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:16,502 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:16,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:55:16,503 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:16,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -337097364, now seen corresponding path program 1 times [2024-11-28 03:55:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:16,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432146804] [2024-11-28 03:55:16,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:16,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:55:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:19,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432146804] [2024-11-28 03:55:19,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432146804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:19,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:19,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:55:19,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855511018] [2024-11-28 03:55:19,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:19,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:55:19,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:19,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:55:19,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:55:19,913 INFO L87 Difference]: Start difference. First operand 346 states and 537 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:21,599 INFO L93 Difference]: Finished difference Result 1129 states and 1771 transitions. [2024-11-28 03:55:21,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:55:21,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-28 03:55:21,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:21,604 INFO L225 Difference]: With dead ends: 1129 [2024-11-28 03:55:21,605 INFO L226 Difference]: Without dead ends: 845 [2024-11-28 03:55:21,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:55:21,606 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 488 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:21,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 538 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:55:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-28 03:55:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 409. [2024-11-28 03:55:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 333 states have (on average 1.4414414414414414) internal successors, (480), 335 states have internal predecessors, (480), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-28 03:55:21,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 620 transitions. [2024-11-28 03:55:21,658 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 620 transitions. Word has length 143 [2024-11-28 03:55:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:21,659 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 620 transitions. [2024-11-28 03:55:21,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 620 transitions. [2024-11-28 03:55:21,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:55:21,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:21,661 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:21,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:55:21,661 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:21,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:21,662 INFO L85 PathProgramCache]: Analyzing trace with hash -347048468, now seen corresponding path program 1 times [2024-11-28 03:55:21,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:21,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017116736] [2024-11-28 03:55:21,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:21,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:55:24,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017116736] [2024-11-28 03:55:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017116736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:55:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612317438] [2024-11-28 03:55:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:24,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:55:24,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:24,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:55:24,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:55:24,768 INFO L87 Difference]: Start difference. First operand 409 states and 620 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:26,469 INFO L93 Difference]: Finished difference Result 1217 states and 1868 transitions. [2024-11-28 03:55:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:55:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-28 03:55:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:26,475 INFO L225 Difference]: With dead ends: 1217 [2024-11-28 03:55:26,475 INFO L226 Difference]: Without dead ends: 872 [2024-11-28 03:55:26,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:55:26,478 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 435 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:26,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 529 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:55:26,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-28 03:55:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 684. [2024-11-28 03:55:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 608 states have (on average 1.5148026315789473) internal successors, (921), 610 states have internal predecessors, (921), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-28 03:55:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1061 transitions. [2024-11-28 03:55:26,571 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1061 transitions. Word has length 143 [2024-11-28 03:55:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:26,572 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1061 transitions. [2024-11-28 03:55:26,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1061 transitions. [2024-11-28 03:55:26,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:55:26,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:26,575 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:26,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:55:26,575 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:26,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1592812193, now seen corresponding path program 1 times [2024-11-28 03:55:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243713942] [2024-11-28 03:55:26,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:26,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:27,095 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:55:27,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:27,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243713942] [2024-11-28 03:55:27,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243713942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:27,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:27,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:55:27,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077276511] [2024-11-28 03:55:27,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:27,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:55:27,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:27,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:55:27,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:55:27,098 INFO L87 Difference]: Start difference. First operand 684 states and 1061 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:27,490 INFO L93 Difference]: Finished difference Result 1172 states and 1834 transitions. [2024-11-28 03:55:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:55:27,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 143 [2024-11-28 03:55:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:27,495 INFO L225 Difference]: With dead ends: 1172 [2024-11-28 03:55:27,495 INFO L226 Difference]: Without dead ends: 664 [2024-11-28 03:55:27,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:55:27,498 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 105 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:27,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 340 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:55:27,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-28 03:55:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 610. [2024-11-28 03:55:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 534 states have (on average 1.4887640449438202) internal successors, (795), 536 states have internal predecessors, (795), 70 states have call successors, (70), 5 states have call predecessors, (70), 5 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-28 03:55:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 935 transitions. [2024-11-28 03:55:27,575 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 935 transitions. Word has length 143 [2024-11-28 03:55:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:27,576 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 935 transitions. [2024-11-28 03:55:27,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 935 transitions. [2024-11-28 03:55:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:55:27,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:27,583 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:27,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:55:27,584 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:27,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1716157245, now seen corresponding path program 1 times [2024-11-28 03:55:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:27,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617507323] [2024-11-28 03:55:27,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:27,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:55:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:55:31,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:55:31,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617507323] [2024-11-28 03:55:31,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617507323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:55:31,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:55:31,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:55:31,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323291979] [2024-11-28 03:55:31,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:55:31,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:55:31,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:55:31,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:55:31,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:55:31,964 INFO L87 Difference]: Start difference. First operand 610 states and 935 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:34,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:55:34,257 INFO L93 Difference]: Finished difference Result 1308 states and 2041 transitions. [2024-11-28 03:55:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:55:34,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:55:34,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:55:34,263 INFO L225 Difference]: With dead ends: 1308 [2024-11-28 03:55:34,263 INFO L226 Difference]: Without dead ends: 974 [2024-11-28 03:55:34,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:55:34,265 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 557 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:55:34,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 575 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:55:34,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-11-28 03:55:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 494. [2024-11-28 03:55:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 428 states have (on average 1.4602803738317758) internal successors, (625), 428 states have internal predecessors, (625), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:55:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 745 transitions. [2024-11-28 03:55:34,329 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 745 transitions. Word has length 144 [2024-11-28 03:55:34,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:55:34,331 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 745 transitions. [2024-11-28 03:55:34,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:55:34,332 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 745 transitions. [2024-11-28 03:55:34,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:55:34,334 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:55:34,334 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:55:34,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:55:34,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:55:34,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:55:34,335 INFO L85 PathProgramCache]: Analyzing trace with hash 928109453, now seen corresponding path program 1 times [2024-11-28 03:55:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:55:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659003052] [2024-11-28 03:55:34,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:55:34,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:55:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:56:15,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:15,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659003052] [2024-11-28 03:56:15,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659003052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:15,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:15,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:56:15,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696855434] [2024-11-28 03:56:15,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:15,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:56:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:15,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:56:15,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:56:15,869 INFO L87 Difference]: Start difference. First operand 494 states and 745 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:22,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:22,338 INFO L93 Difference]: Finished difference Result 1208 states and 1820 transitions. [2024-11-28 03:56:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:56:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:56:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:22,344 INFO L225 Difference]: With dead ends: 1208 [2024-11-28 03:56:22,344 INFO L226 Difference]: Without dead ends: 815 [2024-11-28 03:56:22,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:56:22,347 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 518 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1826 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:22,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1012 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1826 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 03:56:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2024-11-28 03:56:22,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 639. [2024-11-28 03:56:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 573 states have (on average 1.4851657940663177) internal successors, (851), 573 states have internal predecessors, (851), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:56:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 971 transitions. [2024-11-28 03:56:22,406 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 971 transitions. Word has length 144 [2024-11-28 03:56:22,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:22,406 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 971 transitions. [2024-11-28 03:56:22,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 971 transitions. [2024-11-28 03:56:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-28 03:56:22,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:22,411 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:22,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:56:22,411 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:22,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:22,412 INFO L85 PathProgramCache]: Analyzing trace with hash 794095947, now seen corresponding path program 1 times [2024-11-28 03:56:22,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:22,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083276818] [2024-11-28 03:56:22,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:56:32,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083276818] [2024-11-28 03:56:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083276818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:32,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:32,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:56:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642937130] [2024-11-28 03:56:32,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:32,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:56:32,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:32,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:56:32,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:56:32,701 INFO L87 Difference]: Start difference. First operand 639 states and 971 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:35,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:35,376 INFO L93 Difference]: Finished difference Result 991 states and 1475 transitions. [2024-11-28 03:56:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:56:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 144 [2024-11-28 03:56:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:35,381 INFO L225 Difference]: With dead ends: 991 [2024-11-28 03:56:35,381 INFO L226 Difference]: Without dead ends: 777 [2024-11-28 03:56:35,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:56:35,383 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 360 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:35,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 832 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:56:35,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-28 03:56:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 611. [2024-11-28 03:56:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 545 states have (on average 1.4807339449541284) internal successors, (807), 545 states have internal predecessors, (807), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:56:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 927 transitions. [2024-11-28 03:56:35,444 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 927 transitions. Word has length 144 [2024-11-28 03:56:35,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:35,444 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 927 transitions. [2024-11-28 03:56:35,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 927 transitions. [2024-11-28 03:56:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:56:35,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:35,447 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:35,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:56:35,448 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:35,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1744971523, now seen corresponding path program 1 times [2024-11-28 03:56:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:35,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365830156] [2024-11-28 03:56:35,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:35,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:56:44,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365830156] [2024-11-28 03:56:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365830156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:44,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:44,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:56:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401935025] [2024-11-28 03:56:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:44,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:56:44,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:44,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:56:44,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:56:44,018 INFO L87 Difference]: Start difference. First operand 611 states and 927 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:46,629 INFO L93 Difference]: Finished difference Result 953 states and 1419 transitions. [2024-11-28 03:56:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:56:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:56:46,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:46,634 INFO L225 Difference]: With dead ends: 953 [2024-11-28 03:56:46,634 INFO L226 Difference]: Without dead ends: 725 [2024-11-28 03:56:46,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:56:46,636 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 608 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:46,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 589 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:56:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-28 03:56:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 603. [2024-11-28 03:56:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 537 states have (on average 1.4767225325884543) internal successors, (793), 537 states have internal predecessors, (793), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:56:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 913 transitions. [2024-11-28 03:56:46,699 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 913 transitions. Word has length 145 [2024-11-28 03:56:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:46,699 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 913 transitions. [2024-11-28 03:56:46,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 913 transitions. [2024-11-28 03:56:46,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:56:46,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:46,703 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:46,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:56:46,703 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:46,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash 403125199, now seen corresponding path program 1 times [2024-11-28 03:56:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:46,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989454761] [2024-11-28 03:56:46,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:46,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:56:50,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:56:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989454761] [2024-11-28 03:56:50,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989454761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:56:50,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:56:50,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:56:50,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683033822] [2024-11-28 03:56:50,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:56:50,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:56:50,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:56:50,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:56:50,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:56:50,929 INFO L87 Difference]: Start difference. First operand 603 states and 913 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:55,438 INFO L93 Difference]: Finished difference Result 1249 states and 1905 transitions. [2024-11-28 03:56:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:56:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:56:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:55,442 INFO L225 Difference]: With dead ends: 1249 [2024-11-28 03:56:55,442 INFO L226 Difference]: Without dead ends: 1035 [2024-11-28 03:56:55,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:56:55,444 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 416 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:55,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 586 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 03:56:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-28 03:56:55,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 617. [2024-11-28 03:56:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 551 states have (on average 1.4754990925589837) internal successors, (813), 551 states have internal predecessors, (813), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:56:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 933 transitions. [2024-11-28 03:56:55,500 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 933 transitions. Word has length 145 [2024-11-28 03:56:55,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:55,500 INFO L471 AbstractCegarLoop]: Abstraction has 617 states and 933 transitions. [2024-11-28 03:56:55,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:56:55,501 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 933 transitions. [2024-11-28 03:56:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:56:55,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:55,503 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:55,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:56:55,503 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:56:55,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:55,504 INFO L85 PathProgramCache]: Analyzing trace with hash 393174095, now seen corresponding path program 1 times [2024-11-28 03:56:55,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:56:55,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750889272] [2024-11-28 03:56:55,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:55,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:56:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:06,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:06,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750889272] [2024-11-28 03:57:06,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750889272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:06,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:06,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:57:06,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697431355] [2024-11-28 03:57:06,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:06,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:57:06,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:06,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:57:06,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:57:06,284 INFO L87 Difference]: Start difference. First operand 617 states and 933 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:09,342 INFO L93 Difference]: Finished difference Result 1236 states and 1882 transitions. [2024-11-28 03:57:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:57:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:57:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:09,346 INFO L225 Difference]: With dead ends: 1236 [2024-11-28 03:57:09,346 INFO L226 Difference]: Without dead ends: 825 [2024-11-28 03:57:09,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:57:09,348 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 373 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:09,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 626 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:57:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-11-28 03:57:09,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 649. [2024-11-28 03:57:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 583 states have (on average 1.4785591766723842) internal successors, (862), 583 states have internal predecessors, (862), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:57:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 982 transitions. [2024-11-28 03:57:09,400 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 982 transitions. Word has length 145 [2024-11-28 03:57:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:09,400 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 982 transitions. [2024-11-28 03:57:09,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 982 transitions. [2024-11-28 03:57:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-28 03:57:09,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:09,403 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:09,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:57:09,403 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:09,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:09,404 INFO L85 PathProgramCache]: Analyzing trace with hash -617943155, now seen corresponding path program 1 times [2024-11-28 03:57:09,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:09,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428712121] [2024-11-28 03:57:09,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:09,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:14,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:14,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428712121] [2024-11-28 03:57:14,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428712121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 03:57:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917331091] [2024-11-28 03:57:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:14,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:57:14,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:14,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:57:14,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:57:14,490 INFO L87 Difference]: Start difference. First operand 649 states and 982 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:17,657 INFO L93 Difference]: Finished difference Result 1315 states and 1994 transitions. [2024-11-28 03:57:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:57:17,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2024-11-28 03:57:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:17,660 INFO L225 Difference]: With dead ends: 1315 [2024-11-28 03:57:17,660 INFO L226 Difference]: Without dead ends: 1087 [2024-11-28 03:57:17,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=124, Invalid=218, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:57:17,662 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 342 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:17,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 778 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:57:17,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-11-28 03:57:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 677. [2024-11-28 03:57:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 611 states have (on average 1.4828150572831424) internal successors, (906), 611 states have internal predecessors, (906), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:57:17,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1026 transitions. [2024-11-28 03:57:17,723 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1026 transitions. Word has length 145 [2024-11-28 03:57:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:17,724 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 1026 transitions. [2024-11-28 03:57:17,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:57:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1026 transitions. [2024-11-28 03:57:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:57:17,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:17,727 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:17,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:57:17,727 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:17,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1738707070, now seen corresponding path program 1 times [2024-11-28 03:57:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:17,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824446346] [2024-11-28 03:57:17,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:17,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:38,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:38,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824446346] [2024-11-28 03:57:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824446346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:38,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:38,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:57:38,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506404474] [2024-11-28 03:57:38,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:38,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:57:38,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:38,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:57:38,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:57:38,381 INFO L87 Difference]: Start difference. First operand 677 states and 1026 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:57:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:57:40,177 INFO L93 Difference]: Finished difference Result 1135 states and 1696 transitions. [2024-11-28 03:57:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:57:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2024-11-28 03:57:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:57:40,180 INFO L225 Difference]: With dead ends: 1135 [2024-11-28 03:57:40,181 INFO L226 Difference]: Without dead ends: 1133 [2024-11-28 03:57:40,181 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:57:40,182 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 440 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:57:40,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1081 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:57:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2024-11-28 03:57:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 757. [2024-11-28 03:57:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 691 states have (on average 1.4790159189580319) internal successors, (1022), 691 states have internal predecessors, (1022), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:57:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1142 transitions. [2024-11-28 03:57:40,238 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1142 transitions. Word has length 146 [2024-11-28 03:57:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:57:40,239 INFO L471 AbstractCegarLoop]: Abstraction has 757 states and 1142 transitions. [2024-11-28 03:57:40,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:57:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1142 transitions. [2024-11-28 03:57:40,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:57:40,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:57:40,241 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:57:40,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:57:40,241 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:57:40,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:57:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash -633032192, now seen corresponding path program 1 times [2024-11-28 03:57:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:57:40,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660274954] [2024-11-28 03:57:40,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:57:40,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:57:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:57:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:57:59,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:57:59,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660274954] [2024-11-28 03:57:59,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660274954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:57:59,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:57:59,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:57:59,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104531137] [2024-11-28 03:57:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:57:59,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:57:59,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:57:59,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:57:59,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:57:59,896 INFO L87 Difference]: Start difference. First operand 757 states and 1142 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:58:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:01,843 INFO L93 Difference]: Finished difference Result 1186 states and 1768 transitions. [2024-11-28 03:58:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:58:01,844 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 146 [2024-11-28 03:58:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:01,848 INFO L225 Difference]: With dead ends: 1186 [2024-11-28 03:58:01,848 INFO L226 Difference]: Without dead ends: 1184 [2024-11-28 03:58:01,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:58:01,850 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 377 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:01,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 900 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:58:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2024-11-28 03:58:01,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 854. [2024-11-28 03:58:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 788 states have (on average 1.4708121827411167) internal successors, (1159), 788 states have internal predecessors, (1159), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1279 transitions. [2024-11-28 03:58:01,906 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1279 transitions. Word has length 146 [2024-11-28 03:58:01,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:01,907 INFO L471 AbstractCegarLoop]: Abstraction has 854 states and 1279 transitions. [2024-11-28 03:58:01,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:58:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1279 transitions. [2024-11-28 03:58:01,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:58:01,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:01,909 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:01,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:58:01,909 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:01,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:01,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1229233980, now seen corresponding path program 1 times [2024-11-28 03:58:01,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:01,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249146645] [2024-11-28 03:58:01,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:02,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:02,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249146645] [2024-11-28 03:58:02,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249146645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:02,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:02,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:58:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392675219] [2024-11-28 03:58:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:02,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:58:02,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:02,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:58:02,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:58:02,077 INFO L87 Difference]: Start difference. First operand 854 states and 1279 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:02,281 INFO L93 Difference]: Finished difference Result 1480 states and 2227 transitions. [2024-11-28 03:58:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:58:02,282 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 03:58:02,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:02,285 INFO L225 Difference]: With dead ends: 1480 [2024-11-28 03:58:02,285 INFO L226 Difference]: Without dead ends: 881 [2024-11-28 03:58:02,286 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 [2024-11-28 03:58:02,287 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 115 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:02,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 518 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:58:02,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-28 03:58:02,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 857. [2024-11-28 03:58:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 791 states have (on average 1.4690265486725664) internal successors, (1162), 791 states have internal predecessors, (1162), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1282 transitions. [2024-11-28 03:58:02,348 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1282 transitions. Word has length 146 [2024-11-28 03:58:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:02,349 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1282 transitions. [2024-11-28 03:58:02,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1282 transitions. [2024-11-28 03:58:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:58:02,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:02,351 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:02,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:58:02,351 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:02,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1188913052, now seen corresponding path program 1 times [2024-11-28 03:58:02,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:02,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432061097] [2024-11-28 03:58:02,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:02,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432061097] [2024-11-28 03:58:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432061097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:58:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15673888] [2024-11-28 03:58:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:06,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:58:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:06,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:58:06,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:58:06,566 INFO L87 Difference]: Start difference. First operand 857 states and 1282 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:08,370 INFO L93 Difference]: Finished difference Result 1563 states and 2363 transitions. [2024-11-28 03:58:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:58:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 03:58:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:08,373 INFO L225 Difference]: With dead ends: 1563 [2024-11-28 03:58:08,373 INFO L226 Difference]: Without dead ends: 1327 [2024-11-28 03:58:08,374 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:58:08,374 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 420 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:08,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 594 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:58:08,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2024-11-28 03:58:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 967. [2024-11-28 03:58:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 901 states have (on average 1.483906770255272) internal successors, (1337), 901 states have internal predecessors, (1337), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1457 transitions. [2024-11-28 03:58:08,449 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1457 transitions. Word has length 146 [2024-11-28 03:58:08,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:08,450 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1457 transitions. [2024-11-28 03:58:08,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:08,450 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1457 transitions. [2024-11-28 03:58:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:58:08,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:08,452 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:08,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:58:08,452 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:08,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:08,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2084985890, now seen corresponding path program 1 times [2024-11-28 03:58:08,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:08,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648414845] [2024-11-28 03:58:08,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:08,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:16,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:16,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648414845] [2024-11-28 03:58:16,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648414845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:16,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:16,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:58:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960321191] [2024-11-28 03:58:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:16,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:58:16,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:16,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:58:16,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:58:16,338 INFO L87 Difference]: Start difference. First operand 967 states and 1457 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:18,658 INFO L93 Difference]: Finished difference Result 1467 states and 2192 transitions. [2024-11-28 03:58:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:58:18,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 03:58:18,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:18,663 INFO L225 Difference]: With dead ends: 1467 [2024-11-28 03:58:18,664 INFO L226 Difference]: Without dead ends: 1121 [2024-11-28 03:58:18,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:58:18,666 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 362 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:18,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 876 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:58:18,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2024-11-28 03:58:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 907. [2024-11-28 03:58:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 841 states have (on average 1.478002378121284) internal successors, (1243), 841 states have internal predecessors, (1243), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1363 transitions. [2024-11-28 03:58:18,733 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1363 transitions. Word has length 146 [2024-11-28 03:58:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:18,734 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1363 transitions. [2024-11-28 03:58:18,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1363 transitions. [2024-11-28 03:58:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:58:18,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:18,736 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:18,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:58:18,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:18,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1255211522, now seen corresponding path program 1 times [2024-11-28 03:58:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776718095] [2024-11-28 03:58:18,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776718095] [2024-11-28 03:58:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776718095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:21,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:58:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308857512] [2024-11-28 03:58:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:21,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:58:21,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:21,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:58:21,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:58:21,875 INFO L87 Difference]: Start difference. First operand 907 states and 1363 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:23,657 INFO L93 Difference]: Finished difference Result 1634 states and 2497 transitions. [2024-11-28 03:58:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:58:23,658 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 146 [2024-11-28 03:58:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:23,660 INFO L225 Difference]: With dead ends: 1634 [2024-11-28 03:58:23,660 INFO L226 Difference]: Without dead ends: 1292 [2024-11-28 03:58:23,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:58:23,662 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 412 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:23,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 592 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:58:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-11-28 03:58:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 903. [2024-11-28 03:58:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 837 states have (on average 1.4778972520908005) internal successors, (1237), 837 states have internal predecessors, (1237), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1357 transitions. [2024-11-28 03:58:23,708 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1357 transitions. Word has length 146 [2024-11-28 03:58:23,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:23,708 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1357 transitions. [2024-11-28 03:58:23,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:23,708 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1357 transitions. [2024-11-28 03:58:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:58:23,710 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:23,710 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:23,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:58:23,711 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:23,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2060369463, now seen corresponding path program 1 times [2024-11-28 03:58:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:23,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280639342] [2024-11-28 03:58:23,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:23,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280639342] [2024-11-28 03:58:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280639342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:58:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015875168] [2024-11-28 03:58:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:48,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:58:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:48,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:58:48,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:58:48,987 INFO L87 Difference]: Start difference. First operand 903 states and 1357 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:58:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:52,965 INFO L93 Difference]: Finished difference Result 1314 states and 1950 transitions. [2024-11-28 03:58:52,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:58:52,965 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 147 [2024-11-28 03:58:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:52,970 INFO L225 Difference]: With dead ends: 1314 [2024-11-28 03:58:52,970 INFO L226 Difference]: Without dead ends: 1312 [2024-11-28 03:58:52,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:58:52,973 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 714 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:52,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 854 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 03:58:52,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2024-11-28 03:58:53,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 967. [2024-11-28 03:58:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 901 states have (on average 1.4872364039955606) internal successors, (1340), 901 states have internal predecessors, (1340), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1460 transitions. [2024-11-28 03:58:53,032 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1460 transitions. Word has length 147 [2024-11-28 03:58:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:53,032 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1460 transitions. [2024-11-28 03:58:53,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:58:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1460 transitions. [2024-11-28 03:58:53,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:58:53,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:53,035 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:53,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:58:53,035 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:53,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:53,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1637667637, now seen corresponding path program 1 times [2024-11-28 03:58:53,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:53,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126416235] [2024-11-28 03:58:53,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:58:53,153 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:58:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:58:53,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126416235] [2024-11-28 03:58:53,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126416235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:58:53,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:58:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:58:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215618406] [2024-11-28 03:58:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:58:53,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:58:53,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:58:53,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:58:53,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:53,154 INFO L87 Difference]: Start difference. First operand 967 states and 1460 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:58:53,223 INFO L93 Difference]: Finished difference Result 1752 states and 2688 transitions. [2024-11-28 03:58:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:58:53,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-28 03:58:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:58:53,227 INFO L225 Difference]: With dead ends: 1752 [2024-11-28 03:58:53,227 INFO L226 Difference]: Without dead ends: 1194 [2024-11-28 03:58:53,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:58:53,228 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 28 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:58:53,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 245 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:58:53,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2024-11-28 03:58:53,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 967. [2024-11-28 03:58:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 901 states have (on average 1.4728079911209766) internal successors, (1327), 901 states have internal predecessors, (1327), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:58:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1447 transitions. [2024-11-28 03:58:53,286 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1447 transitions. Word has length 147 [2024-11-28 03:58:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:58:53,286 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1447 transitions. [2024-11-28 03:58:53,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:58:53,287 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1447 transitions. [2024-11-28 03:58:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:58:53,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:58:53,288 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:58:53,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:58:53,289 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:58:53,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:58:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1725124743, now seen corresponding path program 1 times [2024-11-28 03:58:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:58:53,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308235689] [2024-11-28 03:58:53,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:58:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:58:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:18,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:18,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308235689] [2024-11-28 03:59:18,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308235689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:18,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 03:59:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055980865] [2024-11-28 03:59:18,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:18,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:59:18,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:18,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:59:18,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:59:18,846 INFO L87 Difference]: Start difference. First operand 967 states and 1447 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:59:21,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:21,962 INFO L93 Difference]: Finished difference Result 1211 states and 1776 transitions. [2024-11-28 03:59:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:59:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 147 [2024-11-28 03:59:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:21,968 INFO L225 Difference]: With dead ends: 1211 [2024-11-28 03:59:21,968 INFO L226 Difference]: Without dead ends: 1209 [2024-11-28 03:59:21,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:59:21,970 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 338 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:21,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 841 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:59:21,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-28 03:59:22,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1019. [2024-11-28 03:59:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 953 states have (on average 1.4774396642182581) internal successors, (1408), 953 states have internal predecessors, (1408), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:59:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1528 transitions. [2024-11-28 03:59:22,016 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1528 transitions. Word has length 147 [2024-11-28 03:59:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:22,016 INFO L471 AbstractCegarLoop]: Abstraction has 1019 states and 1528 transitions. [2024-11-28 03:59:22,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 03:59:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1528 transitions. [2024-11-28 03:59:22,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:59:22,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:22,018 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:22,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:59:22,018 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:22,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash 134283430, now seen corresponding path program 1 times [2024-11-28 03:59:22,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:22,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593159769] [2024-11-28 03:59:22,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:22,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:34,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:34,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593159769] [2024-11-28 03:59:34,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593159769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:34,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:34,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 03:59:34,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917229639] [2024-11-28 03:59:34,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:34,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:59:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:34,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:59:34,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:59:34,381 INFO L87 Difference]: Start difference. First operand 1019 states and 1528 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:39,970 INFO L93 Difference]: Finished difference Result 1919 states and 2825 transitions. [2024-11-28 03:59:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:59:39,971 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-28 03:59:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:39,975 INFO L225 Difference]: With dead ends: 1919 [2024-11-28 03:59:39,975 INFO L226 Difference]: Without dead ends: 1527 [2024-11-28 03:59:39,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:59:39,976 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 1110 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:39,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 705 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:59:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2024-11-28 03:59:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1134. [2024-11-28 03:59:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1134 states, 1068 states have (on average 1.4840823970037453) internal successors, (1585), 1068 states have internal predecessors, (1585), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:59:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1705 transitions. [2024-11-28 03:59:40,040 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1705 transitions. Word has length 147 [2024-11-28 03:59:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:40,040 INFO L471 AbstractCegarLoop]: Abstraction has 1134 states and 1705 transitions. [2024-11-28 03:59:40,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1705 transitions. [2024-11-28 03:59:40,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:59:40,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:40,042 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:40,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:59:40,043 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:40,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:40,043 INFO L85 PathProgramCache]: Analyzing trace with hash -876833820, now seen corresponding path program 1 times [2024-11-28 03:59:40,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:40,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393405538] [2024-11-28 03:59:40,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:40,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:45,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:45,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393405538] [2024-11-28 03:59:45,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393405538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:45,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:45,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:59:45,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818323341] [2024-11-28 03:59:45,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:45,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:59:45,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:45,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:59:45,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:59:45,030 INFO L87 Difference]: Start difference. First operand 1134 states and 1705 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:49,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:49,407 INFO L93 Difference]: Finished difference Result 2485 states and 3767 transitions. [2024-11-28 03:59:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:59:49,408 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-28 03:59:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:49,414 INFO L225 Difference]: With dead ends: 2485 [2024-11-28 03:59:49,414 INFO L226 Difference]: Without dead ends: 2143 [2024-11-28 03:59:49,416 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=297, Invalid=695, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:59:49,416 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 950 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:49,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 606 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:59:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2024-11-28 03:59:49,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 1566. [2024-11-28 03:59:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1456 states have (on average 1.477335164835165) internal successors, (2151), 1456 states have internal predecessors, (2151), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2351 transitions. [2024-11-28 03:59:49,482 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2351 transitions. Word has length 147 [2024-11-28 03:59:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:49,483 INFO L471 AbstractCegarLoop]: Abstraction has 1566 states and 2351 transitions. [2024-11-28 03:59:49,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2351 transitions. [2024-11-28 03:59:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-28 03:59:49,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:49,484 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:49,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 03:59:49,484 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:49,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:49,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1897902174, now seen corresponding path program 1 times [2024-11-28 03:59:49,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:49,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459855960] [2024-11-28 03:59:49,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:49,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:53,488 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459855960] [2024-11-28 03:59:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459855960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:53,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:53,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:59:53,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693615627] [2024-11-28 03:59:53,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:53,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:59:53,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:53,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:59:53,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:59:53,489 INFO L87 Difference]: Start difference. First operand 1566 states and 2351 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:55,837 INFO L93 Difference]: Finished difference Result 3084 states and 4706 transitions. [2024-11-28 03:59:55,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:59:55,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 147 [2024-11-28 03:59:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:55,845 INFO L225 Difference]: With dead ends: 3084 [2024-11-28 03:59:55,846 INFO L226 Difference]: Without dead ends: 2408 [2024-11-28 03:59:55,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:59:55,852 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 298 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:55,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 817 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:59:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2024-11-28 03:59:55,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1516. [2024-11-28 03:59:55,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1406 states have (on average 1.468705547652916) internal successors, (2065), 1406 states have internal predecessors, (2065), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2265 transitions. [2024-11-28 03:59:55,976 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2265 transitions. Word has length 147 [2024-11-28 03:59:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:55,976 INFO L471 AbstractCegarLoop]: Abstraction has 1516 states and 2265 transitions. [2024-11-28 03:59:55,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:55,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2265 transitions. [2024-11-28 03:59:55,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:59:55,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:55,978 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:55,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 03:59:55,978 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:55,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:55,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1663147992, now seen corresponding path program 1 times [2024-11-28 03:59:55,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:55,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614431959] [2024-11-28 03:59:55,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:55,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614431959] [2024-11-28 03:59:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614431959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:56,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:59:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76597173] [2024-11-28 03:59:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:56,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:59:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:56,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:59:56,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:59:56,287 INFO L87 Difference]: Start difference. First operand 1516 states and 2265 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:56,656 INFO L93 Difference]: Finished difference Result 2464 states and 3674 transitions. [2024-11-28 03:59:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:59:56,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-28 03:59:56,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:56,662 INFO L225 Difference]: With dead ends: 2464 [2024-11-28 03:59:56,662 INFO L226 Difference]: Without dead ends: 1553 [2024-11-28 03:59:56,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:56,664 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 114 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:56,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 379 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:59:56,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2024-11-28 03:59:56,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1515. [2024-11-28 03:59:56,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1405 states have (on average 1.4683274021352313) internal successors, (2063), 1405 states have internal predecessors, (2063), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2263 transitions. [2024-11-28 03:59:56,738 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2263 transitions. Word has length 148 [2024-11-28 03:59:56,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:56,738 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 2263 transitions. [2024-11-28 03:59:56,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2263 transitions. [2024-11-28 03:59:56,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-28 03:59:56,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:56,740 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:56,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 03:59:56,740 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:56,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1403265330, now seen corresponding path program 1 times [2024-11-28 03:59:56,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:56,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319850484] [2024-11-28 03:59:56,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:56,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:57,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:57,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319850484] [2024-11-28 03:59:57,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319850484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:57,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:57,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:59:57,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799730215] [2024-11-28 03:59:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:57,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:59:57,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:57,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:59:57,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:57,084 INFO L87 Difference]: Start difference. First operand 1515 states and 2263 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:57,687 INFO L93 Difference]: Finished difference Result 2309 states and 3448 transitions. [2024-11-28 03:59:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:59:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2024-11-28 03:59:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:57,691 INFO L225 Difference]: With dead ends: 2309 [2024-11-28 03:59:57,691 INFO L226 Difference]: Without dead ends: 1595 [2024-11-28 03:59:57,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:59:57,692 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 191 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:57,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 483 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:59:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2024-11-28 03:59:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1511. [2024-11-28 03:59:57,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1401 states have (on average 1.46395431834404) internal successors, (2051), 1401 states have internal predecessors, (2051), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2251 transitions. [2024-11-28 03:59:57,762 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2251 transitions. Word has length 148 [2024-11-28 03:59:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:57,762 INFO L471 AbstractCegarLoop]: Abstraction has 1511 states and 2251 transitions. [2024-11-28 03:59:57,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2251 transitions. [2024-11-28 03:59:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 03:59:57,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:57,763 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:57,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 03:59:57,764 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:57,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:57,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1997471653, now seen corresponding path program 1 times [2024-11-28 03:59:57,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:57,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376887885] [2024-11-28 03:59:57,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:57,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:57,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:57,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376887885] [2024-11-28 03:59:57,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376887885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:57,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:57,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:59:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744670198] [2024-11-28 03:59:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:57,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:59:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:57,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:59:57,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:59:57,828 INFO L87 Difference]: Start difference. First operand 1511 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:57,995 INFO L93 Difference]: Finished difference Result 2612 states and 3924 transitions. [2024-11-28 03:59:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:59:57,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2024-11-28 03:59:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:57,998 INFO L225 Difference]: With dead ends: 2612 [2024-11-28 03:59:57,999 INFO L226 Difference]: Without dead ends: 1706 [2024-11-28 03:59:58,000 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 [2024-11-28 03:59:58,000 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 72 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:58,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 251 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:59:58,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2024-11-28 03:59:58,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1524. [2024-11-28 03:59:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1414 states have (on average 1.461103253182461) internal successors, (2066), 1414 states have internal predecessors, (2066), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2266 transitions. [2024-11-28 03:59:58,064 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2266 transitions. Word has length 150 [2024-11-28 03:59:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:58,064 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 2266 transitions. [2024-11-28 03:59:58,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:58,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2266 transitions. [2024-11-28 03:59:58,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 03:59:58,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:58,066 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:58,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 03:59:58,066 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:58,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 894960769, now seen corresponding path program 1 times [2024-11-28 03:59:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583891260] [2024-11-28 03:59:58,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:58,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583891260] [2024-11-28 03:59:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583891260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:58,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:59:58,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151075636] [2024-11-28 03:59:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:58,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:59:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:58,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:59:58,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:58,300 INFO L87 Difference]: Start difference. First operand 1524 states and 2266 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:58,829 INFO L93 Difference]: Finished difference Result 2723 states and 4062 transitions. [2024-11-28 03:59:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:59:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-11-28 03:59:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:58,834 INFO L225 Difference]: With dead ends: 2723 [2024-11-28 03:59:58,834 INFO L226 Difference]: Without dead ends: 1757 [2024-11-28 03:59:58,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:59:58,836 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 146 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:58,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 692 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:59:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2024-11-28 03:59:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1592. [2024-11-28 03:59:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1482 states have (on average 1.4649122807017543) internal successors, (2171), 1482 states have internal predecessors, (2171), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2371 transitions. [2024-11-28 03:59:58,897 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2371 transitions. Word has length 151 [2024-11-28 03:59:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:58,898 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2371 transitions. [2024-11-28 03:59:58,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2371 transitions. [2024-11-28 03:59:58,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-28 03:59:58,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:58,899 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:58,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 03:59:58,899 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:58,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1738009060, now seen corresponding path program 1 times [2024-11-28 03:59:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:58,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469805736] [2024-11-28 03:59:58,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:59:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 03:59:59,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:59:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469805736] [2024-11-28 03:59:59,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469805736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:59:59,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:59:59,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:59:59,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206346518] [2024-11-28 03:59:59,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:59:59,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:59:59,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:59:59,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:59:59,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:59:59,144 INFO L87 Difference]: Start difference. First operand 1592 states and 2371 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:59:59,723 INFO L93 Difference]: Finished difference Result 2608 states and 3903 transitions. [2024-11-28 03:59:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:59:59,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2024-11-28 03:59:59,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:59:59,728 INFO L225 Difference]: With dead ends: 2608 [2024-11-28 03:59:59,728 INFO L226 Difference]: Without dead ends: 1658 [2024-11-28 03:59:59,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:59:59,731 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 139 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:59:59,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 673 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:59:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2024-11-28 03:59:59,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1588. [2024-11-28 03:59:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1478 states have (on average 1.4634641407307172) internal successors, (2163), 1478 states have internal predecessors, (2163), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 03:59:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2363 transitions. [2024-11-28 03:59:59,804 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2363 transitions. Word has length 151 [2024-11-28 03:59:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:59:59,804 INFO L471 AbstractCegarLoop]: Abstraction has 1588 states and 2363 transitions. [2024-11-28 03:59:59,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 03:59:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2363 transitions. [2024-11-28 03:59:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 03:59:59,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:59:59,805 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:59:59,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 03:59:59,805 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:59:59,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:59:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1661410654, now seen corresponding path program 1 times [2024-11-28 03:59:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:59:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623050263] [2024-11-28 03:59:59,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:59:59,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:59:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:00:00,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:00,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623050263] [2024-11-28 04:00:00,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623050263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:00,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:00:00,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245377994] [2024-11-28 04:00:00,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:00,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:00:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:00,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:00:00,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:00:00,064 INFO L87 Difference]: Start difference. First operand 1588 states and 2363 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:00,420 INFO L93 Difference]: Finished difference Result 2572 states and 3863 transitions. [2024-11-28 04:00:00,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:00:00,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-28 04:00:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:00,425 INFO L225 Difference]: With dead ends: 2572 [2024-11-28 04:00:00,426 INFO L226 Difference]: Without dead ends: 1505 [2024-11-28 04:00:00,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:00:00,428 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 105 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:00,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 405 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:00:00,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-11-28 04:00:00,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1471. [2024-11-28 04:00:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1361 states have (on average 1.4687729610580456) internal successors, (1999), 1361 states have internal predecessors, (1999), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:00:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2199 transitions. [2024-11-28 04:00:00,493 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2199 transitions. Word has length 154 [2024-11-28 04:00:00,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:00,494 INFO L471 AbstractCegarLoop]: Abstraction has 1471 states and 2199 transitions. [2024-11-28 04:00:00,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2199 transitions. [2024-11-28 04:00:00,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 04:00:00,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:00,495 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:00,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:00:00,495 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:00,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1388800709, now seen corresponding path program 1 times [2024-11-28 04:00:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555048580] [2024-11-28 04:00:00,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:00:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555048580] [2024-11-28 04:00:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555048580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:00:00,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138200426] [2024-11-28 04:00:00,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:00,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:00:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:00,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:00:00,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:00:00,916 INFO L87 Difference]: Start difference. First operand 1471 states and 2199 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:02,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:02,007 INFO L93 Difference]: Finished difference Result 2605 states and 3879 transitions. [2024-11-28 04:00:02,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:00:02,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-28 04:00:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:02,010 INFO L225 Difference]: With dead ends: 2605 [2024-11-28 04:00:02,010 INFO L226 Difference]: Without dead ends: 1655 [2024-11-28 04:00:02,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:00:02,012 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 225 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:02,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 943 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:00:02,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2024-11-28 04:00:02,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1471. [2024-11-28 04:00:02,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1361 states have (on average 1.4658339456282146) internal successors, (1995), 1361 states have internal predecessors, (1995), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:00:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2195 transitions. [2024-11-28 04:00:02,110 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2195 transitions. Word has length 154 [2024-11-28 04:00:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:02,111 INFO L471 AbstractCegarLoop]: Abstraction has 1471 states and 2195 transitions. [2024-11-28 04:00:02,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2195 transitions. [2024-11-28 04:00:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 04:00:02,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:02,112 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:02,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:00:02,113 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:02,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash 754481685, now seen corresponding path program 1 times [2024-11-28 04:00:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019670678] [2024-11-28 04:00:02,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:02,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:04,347 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:00:04,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:04,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019670678] [2024-11-28 04:00:04,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019670678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:04,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:04,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 04:00:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355728182] [2024-11-28 04:00:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:04,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:00:04,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:04,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:00:04,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:00:04,348 INFO L87 Difference]: Start difference. First operand 1471 states and 2195 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:06,010 INFO L93 Difference]: Finished difference Result 2633 states and 3953 transitions. [2024-11-28 04:00:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:00:06,010 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-28 04:00:06,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:06,014 INFO L225 Difference]: With dead ends: 2633 [2024-11-28 04:00:06,014 INFO L226 Difference]: Without dead ends: 1611 [2024-11-28 04:00:06,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:00:06,016 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 450 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:06,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 676 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:00:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2024-11-28 04:00:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1545. [2024-11-28 04:00:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1435 states have (on average 1.4696864111498258) internal successors, (2109), 1435 states have internal predecessors, (2109), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:00:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 2309 transitions. [2024-11-28 04:00:06,118 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 2309 transitions. Word has length 154 [2024-11-28 04:00:06,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:06,118 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 2309 transitions. [2024-11-28 04:00:06,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:06,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 2309 transitions. [2024-11-28 04:00:06,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 04:00:06,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:06,120 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:06,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 04:00:06,120 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:06,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1050956649, now seen corresponding path program 1 times [2024-11-28 04:00:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:06,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951537365] [2024-11-28 04:00:06,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:06,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:00:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951537365] [2024-11-28 04:00:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951537365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 04:00:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393406084] [2024-11-28 04:00:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:27,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:00:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:27,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:00:27,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:00:27,707 INFO L87 Difference]: Start difference. First operand 1545 states and 2309 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:00:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:35,213 INFO L93 Difference]: Finished difference Result 1888 states and 2736 transitions. [2024-11-28 04:00:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:00:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2024-11-28 04:00:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:35,218 INFO L225 Difference]: With dead ends: 1888 [2024-11-28 04:00:35,218 INFO L226 Difference]: Without dead ends: 1886 [2024-11-28 04:00:35,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=488, Invalid=2164, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:00:35,219 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 604 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:35,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 853 Invalid, 1624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:00:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2024-11-28 04:00:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1572. [2024-11-28 04:00:35,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1462 states have (on average 1.4692202462380302) internal successors, (2148), 1462 states have internal predecessors, (2148), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:00:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2348 transitions. [2024-11-28 04:00:35,285 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2348 transitions. Word has length 154 [2024-11-28 04:00:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:35,286 INFO L471 AbstractCegarLoop]: Abstraction has 1572 states and 2348 transitions. [2024-11-28 04:00:35,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:00:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2348 transitions. [2024-11-28 04:00:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 04:00:35,287 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:35,288 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:35,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 04:00:35,288 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:35,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1868605099, now seen corresponding path program 1 times [2024-11-28 04:00:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051057107] [2024-11-28 04:00:35,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:00:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:00:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:00:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051057107] [2024-11-28 04:00:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051057107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:00:37,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:00:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:00:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920658717] [2024-11-28 04:00:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:00:37,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:00:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:00:37,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:00:37,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:00:37,742 INFO L87 Difference]: Start difference. First operand 1572 states and 2348 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:00:39,220 INFO L93 Difference]: Finished difference Result 2916 states and 4327 transitions. [2024-11-28 04:00:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:00:39,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-28 04:00:39,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:00:39,225 INFO L225 Difference]: With dead ends: 2916 [2024-11-28 04:00:39,225 INFO L226 Difference]: Without dead ends: 1887 [2024-11-28 04:00:39,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:00:39,227 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 332 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:00:39,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 571 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:00:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2024-11-28 04:00:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1584. [2024-11-28 04:00:39,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1474 states have (on average 1.4647218453188602) internal successors, (2159), 1474 states have internal predecessors, (2159), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:00:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2359 transitions. [2024-11-28 04:00:39,335 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2359 transitions. Word has length 154 [2024-11-28 04:00:39,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:00:39,336 INFO L471 AbstractCegarLoop]: Abstraction has 1584 states and 2359 transitions. [2024-11-28 04:00:39,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:00:39,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2359 transitions. [2024-11-28 04:00:39,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 04:00:39,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:00:39,337 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:00:39,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 04:00:39,338 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:00:39,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:00:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1123343207, now seen corresponding path program 1 times [2024-11-28 04:00:39,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:00:39,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736810446] [2024-11-28 04:00:39,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:00:39,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:00:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:01:00,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:00,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736810446] [2024-11-28 04:01:00,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736810446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:00,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:00,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-28 04:01:00,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120352451] [2024-11-28 04:01:00,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:00,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:01:00,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:00,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:01:00,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:01:00,738 INFO L87 Difference]: Start difference. First operand 1584 states and 2359 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:01:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:10,312 INFO L93 Difference]: Finished difference Result 1937 states and 2800 transitions. [2024-11-28 04:01:10,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 04:01:10,313 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2024-11-28 04:01:10,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:10,318 INFO L225 Difference]: With dead ends: 1937 [2024-11-28 04:01:10,318 INFO L226 Difference]: Without dead ends: 1935 [2024-11-28 04:01:10,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=376, Invalid=1694, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 04:01:10,320 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 618 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:10,320 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 767 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:01:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2024-11-28 04:01:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1601. [2024-11-28 04:01:10,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1491 states have (on average 1.4641180415828303) internal successors, (2183), 1491 states have internal predecessors, (2183), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:01:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2383 transitions. [2024-11-28 04:01:10,437 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2383 transitions. Word has length 154 [2024-11-28 04:01:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:10,438 INFO L471 AbstractCegarLoop]: Abstraction has 1601 states and 2383 transitions. [2024-11-28 04:01:10,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:01:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2383 transitions. [2024-11-28 04:01:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 04:01:10,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:10,440 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:10,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 04:01:10,440 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:10,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:10,440 INFO L85 PathProgramCache]: Analyzing trace with hash -858593464, now seen corresponding path program 1 times [2024-11-28 04:01:10,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:10,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125681250] [2024-11-28 04:01:10,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:10,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:01:38,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:38,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125681250] [2024-11-28 04:01:38,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125681250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:38,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:38,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-28 04:01:38,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464169213] [2024-11-28 04:01:38,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:38,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:01:38,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:38,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:01:38,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:01:38,534 INFO L87 Difference]: Start difference. First operand 1601 states and 2383 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:01:47,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:47,687 INFO L93 Difference]: Finished difference Result 1952 states and 2823 transitions. [2024-11-28 04:01:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:01:47,688 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-28 04:01:47,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:47,693 INFO L225 Difference]: With dead ends: 1952 [2024-11-28 04:01:47,693 INFO L226 Difference]: Without dead ends: 1950 [2024-11-28 04:01:47,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=648, Invalid=2432, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:01:47,695 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 628 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:47,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 992 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 04:01:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2024-11-28 04:01:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1625. [2024-11-28 04:01:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1625 states, 1515 states have (on average 1.4646864686468646) internal successors, (2219), 1515 states have internal predecessors, (2219), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:01:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2419 transitions. [2024-11-28 04:01:47,813 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2419 transitions. Word has length 155 [2024-11-28 04:01:47,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:47,813 INFO L471 AbstractCegarLoop]: Abstraction has 1625 states and 2419 transitions. [2024-11-28 04:01:47,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:01:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2419 transitions. [2024-11-28 04:01:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 04:01:47,815 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:47,815 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:47,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 04:01:47,815 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:01:47,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1676241914, now seen corresponding path program 1 times [2024-11-28 04:01:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:47,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562400163] [2024-11-28 04:01:47,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:47,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:02:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562400163] [2024-11-28 04:02:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562400163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-28 04:02:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084005540] [2024-11-28 04:02:16,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:16,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:02:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:16,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:02:16,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:02:16,499 INFO L87 Difference]: Start difference. First operand 1625 states and 2419 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:02:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:24,634 INFO L93 Difference]: Finished difference Result 1992 states and 2882 transitions. [2024-11-28 04:02:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 04:02:24,635 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-28 04:02:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:24,638 INFO L225 Difference]: With dead ends: 1992 [2024-11-28 04:02:24,638 INFO L226 Difference]: Without dead ends: 1990 [2024-11-28 04:02:24,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=442, Invalid=1720, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:02:24,639 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 669 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:24,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1058 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 04:02:24,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2024-11-28 04:02:24,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1617. [2024-11-28 04:02:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1507 states have (on average 1.462508294625083) internal successors, (2204), 1507 states have internal predecessors, (2204), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:02:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2404 transitions. [2024-11-28 04:02:24,711 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2404 transitions. Word has length 155 [2024-11-28 04:02:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:24,712 INFO L471 AbstractCegarLoop]: Abstraction has 1617 states and 2404 transitions. [2024-11-28 04:02:24,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:02:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2404 transitions. [2024-11-28 04:02:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 04:02:24,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:24,713 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:24,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-28 04:02:24,714 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:24,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:24,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1192390534, now seen corresponding path program 1 times [2024-11-28 04:02:24,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:24,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434692394] [2024-11-28 04:02:24,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:24,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:02:46,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:46,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434692394] [2024-11-28 04:02:46,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434692394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:46,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:46,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-28 04:02:46,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572341913] [2024-11-28 04:02:46,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:46,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:02:46,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:46,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:02:46,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:02:46,207 INFO L87 Difference]: Start difference. First operand 1617 states and 2404 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:02:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:57,206 INFO L93 Difference]: Finished difference Result 2183 states and 3136 transitions. [2024-11-28 04:02:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:02:57,207 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-28 04:02:57,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:57,212 INFO L225 Difference]: With dead ends: 2183 [2024-11-28 04:02:57,212 INFO L226 Difference]: Without dead ends: 2181 [2024-11-28 04:02:57,213 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=442, Invalid=1720, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:02:57,214 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 689 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 2335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:57,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 904 Invalid, 2335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 04:02:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2024-11-28 04:02:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 1641. [2024-11-28 04:02:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1531 states have (on average 1.4630960156760286) internal successors, (2240), 1531 states have internal predecessors, (2240), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:02:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2440 transitions. [2024-11-28 04:02:57,333 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2440 transitions. Word has length 155 [2024-11-28 04:02:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:57,334 INFO L471 AbstractCegarLoop]: Abstraction has 1641 states and 2440 transitions. [2024-11-28 04:02:57,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:02:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2440 transitions. [2024-11-28 04:02:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 04:02:57,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:57,336 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:57,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 04:02:57,336 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:02:57,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash 374742084, now seen corresponding path program 1 times [2024-11-28 04:02:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:57,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008741492] [2024-11-28 04:02:57,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:03:17,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008741492] [2024-11-28 04:03:17,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008741492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:17,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:17,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-28 04:03:17,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933088362] [2024-11-28 04:03:17,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:17,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:03:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:17,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:03:17,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:03:17,602 INFO L87 Difference]: Start difference. First operand 1641 states and 2440 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:03:25,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:25,369 INFO L93 Difference]: Finished difference Result 1973 states and 2849 transitions. [2024-11-28 04:03:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:03:25,370 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2024-11-28 04:03:25,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:25,375 INFO L225 Difference]: With dead ends: 1973 [2024-11-28 04:03:25,375 INFO L226 Difference]: Without dead ends: 1971 [2024-11-28 04:03:25,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=460, Invalid=1892, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:03:25,377 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 515 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:25,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 993 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 04:03:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2024-11-28 04:03:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1633. [2024-11-28 04:03:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1523 states have (on average 1.4609323703217334) internal successors, (2225), 1523 states have internal predecessors, (2225), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:03:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2425 transitions. [2024-11-28 04:03:25,499 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2425 transitions. Word has length 155 [2024-11-28 04:03:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:25,500 INFO L471 AbstractCegarLoop]: Abstraction has 1633 states and 2425 transitions. [2024-11-28 04:03:25,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:03:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2425 transitions. [2024-11-28 04:03:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:03:25,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:25,501 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:25,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-28 04:03:25,502 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:25,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash -452119136, now seen corresponding path program 1 times [2024-11-28 04:03:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885363536] [2024-11-28 04:03:25,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:25,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:03:48,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885363536] [2024-11-28 04:03:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885363536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:48,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 04:03:48,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399422239] [2024-11-28 04:03:48,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:48,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:03:48,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:48,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:03:48,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:03:48,621 INFO L87 Difference]: Start difference. First operand 1633 states and 2425 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:03:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:53,831 INFO L93 Difference]: Finished difference Result 1834 states and 2668 transitions. [2024-11-28 04:03:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:03:53,832 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-28 04:03:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:53,836 INFO L225 Difference]: With dead ends: 1834 [2024-11-28 04:03:53,836 INFO L226 Difference]: Without dead ends: 1832 [2024-11-28 04:03:53,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:03:53,837 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 596 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:53,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1007 Invalid, 1616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:03:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2024-11-28 04:03:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1647. [2024-11-28 04:03:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1647 states, 1537 states have (on average 1.4625894599869875) internal successors, (2248), 1537 states have internal predecessors, (2248), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:03:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2448 transitions. [2024-11-28 04:03:53,912 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2448 transitions. Word has length 158 [2024-11-28 04:03:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:53,912 INFO L471 AbstractCegarLoop]: Abstraction has 1647 states and 2448 transitions. [2024-11-28 04:03:53,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:03:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2448 transitions. [2024-11-28 04:03:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:03:53,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:53,914 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:53,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 04:03:53,914 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:03:53,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash -524505694, now seen corresponding path program 1 times [2024-11-28 04:03:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:53,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876491380] [2024-11-28 04:03:53,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:53,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:04:15,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876491380] [2024-11-28 04:04:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876491380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:15,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 04:04:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854517214] [2024-11-28 04:04:15,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:15,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:04:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:15,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:04:15,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:04:15,171 INFO L87 Difference]: Start difference. First operand 1647 states and 2448 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:04:19,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:19,971 INFO L93 Difference]: Finished difference Result 1957 states and 2841 transitions. [2024-11-28 04:04:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:04:19,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-28 04:04:19,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:19,975 INFO L225 Difference]: With dead ends: 1957 [2024-11-28 04:04:19,975 INFO L226 Difference]: Without dead ends: 1955 [2024-11-28 04:04:19,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=202, Invalid=854, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:04:19,976 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 473 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:19,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 959 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:04:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2024-11-28 04:04:20,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1661. [2024-11-28 04:04:20,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1551 states have (on average 1.4642166344294003) internal successors, (2271), 1551 states have internal predecessors, (2271), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:04:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2471 transitions. [2024-11-28 04:04:20,099 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2471 transitions. Word has length 158 [2024-11-28 04:04:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:20,099 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2471 transitions. [2024-11-28 04:04:20,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:04:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2471 transitions. [2024-11-28 04:04:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:04:20,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:20,101 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:20,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-28 04:04:20,101 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:20,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1342154144, now seen corresponding path program 1 times [2024-11-28 04:04:20,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:20,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164380289] [2024-11-28 04:04:20,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:20,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:04:37,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:37,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164380289] [2024-11-28 04:04:37,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164380289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:37,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:37,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 04:04:37,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248870212] [2024-11-28 04:04:37,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:37,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:04:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:37,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:04:37,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:04:37,096 INFO L87 Difference]: Start difference. First operand 1661 states and 2471 transitions. Second operand has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:04:40,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:40,854 INFO L93 Difference]: Finished difference Result 1896 states and 2758 transitions. [2024-11-28 04:04:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:04:40,855 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-28 04:04:40,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:40,859 INFO L225 Difference]: With dead ends: 1896 [2024-11-28 04:04:40,859 INFO L226 Difference]: Without dead ends: 1894 [2024-11-28 04:04:40,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2024-11-28 04:04:40,860 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 395 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:40,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 990 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 04:04:40,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2024-11-28 04:04:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1661. [2024-11-28 04:04:40,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1551 states have (on average 1.4642166344294003) internal successors, (2271), 1551 states have internal predecessors, (2271), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:04:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2471 transitions. [2024-11-28 04:04:40,958 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2471 transitions. Word has length 158 [2024-11-28 04:04:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:40,958 INFO L471 AbstractCegarLoop]: Abstraction has 1661 states and 2471 transitions. [2024-11-28 04:04:40,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.588235294117647) internal successors, (61), 17 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:04:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2471 transitions. [2024-11-28 04:04:40,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:04:40,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:40,959 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:40,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 04:04:40,959 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:40,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1598864862, now seen corresponding path program 1 times [2024-11-28 04:04:40,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:40,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376787830] [2024-11-28 04:04:40,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:40,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:04:43,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:43,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376787830] [2024-11-28 04:04:43,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376787830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:43,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:43,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 04:04:43,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519241333] [2024-11-28 04:04:43,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:43,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:04:43,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:43,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:04:43,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:04:43,373 INFO L87 Difference]: Start difference. First operand 1661 states and 2471 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:04:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:46,291 INFO L93 Difference]: Finished difference Result 2803 states and 4175 transitions. [2024-11-28 04:04:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:04:46,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2024-11-28 04:04:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:46,294 INFO L225 Difference]: With dead ends: 2803 [2024-11-28 04:04:46,294 INFO L226 Difference]: Without dead ends: 1797 [2024-11-28 04:04:46,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:04:46,295 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 370 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:46,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 860 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 04:04:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2024-11-28 04:04:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1673. [2024-11-28 04:04:46,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1563 states have (on average 1.4593730006397954) internal successors, (2281), 1563 states have internal predecessors, (2281), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:04:46,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2481 transitions. [2024-11-28 04:04:46,399 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2481 transitions. Word has length 158 [2024-11-28 04:04:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:46,400 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2481 transitions. [2024-11-28 04:04:46,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:04:46,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2481 transitions. [2024-11-28 04:04:46,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:04:46,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:46,401 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:46,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-28 04:04:46,402 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:46,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:46,402 INFO L85 PathProgramCache]: Analyzing trace with hash 781216412, now seen corresponding path program 1 times [2024-11-28 04:04:46,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:46,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856279359] [2024-11-28 04:04:46,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:46,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:04:47,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:47,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856279359] [2024-11-28 04:04:47,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856279359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:47,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:47,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:04:47,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603716205] [2024-11-28 04:04:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:47,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:04:47,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:47,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:04:47,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:04:47,941 INFO L87 Difference]: Start difference. First operand 1673 states and 2481 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:04:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:49,181 INFO L93 Difference]: Finished difference Result 2899 states and 4326 transitions. [2024-11-28 04:04:49,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:04:49,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2024-11-28 04:04:49,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:49,185 INFO L225 Difference]: With dead ends: 2899 [2024-11-28 04:04:49,186 INFO L226 Difference]: Without dead ends: 1835 [2024-11-28 04:04:49,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:04:49,188 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 266 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:49,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 459 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:04:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2024-11-28 04:04:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1663. [2024-11-28 04:04:49,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1553 states have (on average 1.4584674822923374) internal successors, (2265), 1553 states have internal predecessors, (2265), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:04:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2465 transitions. [2024-11-28 04:04:49,295 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2465 transitions. Word has length 158 [2024-11-28 04:04:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:49,295 INFO L471 AbstractCegarLoop]: Abstraction has 1663 states and 2465 transitions. [2024-11-28 04:04:49,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:04:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2465 transitions. [2024-11-28 04:04:49,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 04:04:49,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:49,297 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:49,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 04:04:49,297 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:04:49,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash 525500255, now seen corresponding path program 1 times [2024-11-28 04:04:49,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:49,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982867742] [2024-11-28 04:04:49,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:08,569 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:05:08,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982867742] [2024-11-28 04:05:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982867742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:08,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:05:08,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 04:05:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635434277] [2024-11-28 04:05:08,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:08,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:05:08,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:08,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:05:08,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:05:08,571 INFO L87 Difference]: Start difference. First operand 1663 states and 2465 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:05:13,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:13,069 INFO L93 Difference]: Finished difference Result 1852 states and 2688 transitions. [2024-11-28 04:05:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:05:13,069 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2024-11-28 04:05:13,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:13,072 INFO L225 Difference]: With dead ends: 1852 [2024-11-28 04:05:13,072 INFO L226 Difference]: Without dead ends: 1850 [2024-11-28 04:05:13,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:05:13,074 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 613 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:13,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1039 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:05:13,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2024-11-28 04:05:13,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1632. [2024-11-28 04:05:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1522 states have (on average 1.4559789750328516) internal successors, (2216), 1522 states have internal predecessors, (2216), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:05:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2416 transitions. [2024-11-28 04:05:13,188 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2416 transitions. Word has length 159 [2024-11-28 04:05:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:13,189 INFO L471 AbstractCegarLoop]: Abstraction has 1632 states and 2416 transitions. [2024-11-28 04:05:13,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:05:13,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2416 transitions. [2024-11-28 04:05:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 04:05:13,191 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:13,191 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:13,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-28 04:05:13,191 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:05:13,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:13,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1718483043, now seen corresponding path program 1 times [2024-11-28 04:05:13,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:13,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059961410] [2024-11-28 04:05:13,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:13,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:05:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:05:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059961410] [2024-11-28 04:05:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059961410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:05:39,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:05:39,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-28 04:05:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467724007] [2024-11-28 04:05:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:05:39,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:05:39,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:05:39,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:05:39,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:05:39,950 INFO L87 Difference]: Start difference. First operand 1632 states and 2416 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:05:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:47,123 INFO L93 Difference]: Finished difference Result 3087 states and 4548 transitions. [2024-11-28 04:05:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:05:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2024-11-28 04:05:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:47,126 INFO L225 Difference]: With dead ends: 3087 [2024-11-28 04:05:47,126 INFO L226 Difference]: Without dead ends: 2021 [2024-11-28 04:05:47,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=340, Invalid=1382, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 04:05:47,128 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 410 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:47,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1210 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 04:05:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2024-11-28 04:05:47,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1659. [2024-11-28 04:05:47,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1549 states have (on average 1.4544867656552614) internal successors, (2253), 1549 states have internal predecessors, (2253), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:05:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2453 transitions. [2024-11-28 04:05:47,209 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2453 transitions. Word has length 159 [2024-11-28 04:05:47,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:47,209 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2453 transitions. [2024-11-28 04:05:47,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:05:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2453 transitions. [2024-11-28 04:05:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 04:05:47,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:47,211 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:47,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-28 04:05:47,211 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:05:47,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1758835803, now seen corresponding path program 1 times [2024-11-28 04:05:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:05:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2254000] [2024-11-28 04:05:47,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:47,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:05:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:06:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:14,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2254000] [2024-11-28 04:06:14,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2254000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:14,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:14,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 04:06:14,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023667804] [2024-11-28 04:06:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:14,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:06:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:14,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:06:14,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:06:14,027 INFO L87 Difference]: Start difference. First operand 1659 states and 2453 transitions. Second operand has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:06:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:19,724 INFO L93 Difference]: Finished difference Result 2005 states and 2891 transitions. [2024-11-28 04:06:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:06:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2024-11-28 04:06:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:19,728 INFO L225 Difference]: With dead ends: 2005 [2024-11-28 04:06:19,728 INFO L226 Difference]: Without dead ends: 2003 [2024-11-28 04:06:19,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=257, Invalid=1003, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:06:19,729 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 478 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:19,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1129 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:06:19,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2024-11-28 04:06:19,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 1633. [2024-11-28 04:06:19,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1523 states have (on average 1.4530531845042678) internal successors, (2213), 1523 states have internal predecessors, (2213), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:06:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2413 transitions. [2024-11-28 04:06:19,851 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2413 transitions. Word has length 159 [2024-11-28 04:06:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:19,852 INFO L471 AbstractCegarLoop]: Abstraction has 1633 states and 2413 transitions. [2024-11-28 04:06:19,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.1) internal successors, (62), 20 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:06:19,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2413 transitions. [2024-11-28 04:06:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-28 04:06:19,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:19,853 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:19,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-28 04:06:19,853 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:19,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash -318505247, now seen corresponding path program 1 times [2024-11-28 04:06:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860532304] [2024-11-28 04:06:19,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:20,387 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:06:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:20,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860532304] [2024-11-28 04:06:20,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860532304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:06:20,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:06:20,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:06:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296345765] [2024-11-28 04:06:20,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:06:20,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:06:20,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:20,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:06:20,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:06:20,389 INFO L87 Difference]: Start difference. First operand 1633 states and 2413 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:06:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:21,584 INFO L93 Difference]: Finished difference Result 2703 states and 4024 transitions. [2024-11-28 04:06:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:06:21,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2024-11-28 04:06:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:21,588 INFO L225 Difference]: With dead ends: 2703 [2024-11-28 04:06:21,588 INFO L226 Difference]: Without dead ends: 1652 [2024-11-28 04:06:21,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:06:21,589 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 156 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:21,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 717 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:06:21,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2024-11-28 04:06:21,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1532. [2024-11-28 04:06:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1422 states have (on average 1.460618846694796) internal successors, (2077), 1422 states have internal predecessors, (2077), 100 states have call successors, (100), 9 states have call predecessors, (100), 9 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:06:21,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2277 transitions. [2024-11-28 04:06:21,664 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2277 transitions. Word has length 159 [2024-11-28 04:06:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:21,664 INFO L471 AbstractCegarLoop]: Abstraction has 1532 states and 2277 transitions. [2024-11-28 04:06:21,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2024-11-28 04:06:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2277 transitions. [2024-11-28 04:06:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-28 04:06:21,666 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:21,666 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:21,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-28 04:06:21,666 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:21,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2037175312, now seen corresponding path program 1 times [2024-11-28 04:06:21,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:21,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113009367] [2024-11-28 04:06:21,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:21,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-28 04:06:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113009367] [2024-11-28 04:06:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113009367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15978907] [2024-11-28 04:06:22,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:22,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:22,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:22,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:06:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:22,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:06:22,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 413 proven. 1662 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2024-11-28 04:06:23,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:06:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 132 proven. 24 refuted. 0 times theorem prover too weak. 3022 trivial. 0 not checked. [2024-11-28 04:06:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15978907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:06:23,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:06:23,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 7] total 19 [2024-11-28 04:06:23,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853828498] [2024-11-28 04:06:23,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:06:23,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:06:23,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:23,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:06:23,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:06:23,746 INFO L87 Difference]: Start difference. First operand 1532 states and 2277 transitions. Second operand has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 6 states have call successors, (88), 4 states have call predecessors, (88), 6 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) [2024-11-28 04:06:24,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:24,680 INFO L93 Difference]: Finished difference Result 2586 states and 3841 transitions. [2024-11-28 04:06:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:06:24,680 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 6 states have call successors, (88), 4 states have call predecessors, (88), 6 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) Word has length 285 [2024-11-28 04:06:24,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:24,683 INFO L225 Difference]: With dead ends: 2586 [2024-11-28 04:06:24,683 INFO L226 Difference]: Without dead ends: 1846 [2024-11-28 04:06:24,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=286, Invalid=770, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:06:24,685 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 1329 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:24,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 1077 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:06:24,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2024-11-28 04:06:24,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1552. [2024-11-28 04:06:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1437 states have (on average 1.4446764091858038) internal successors, (2076), 1437 states have internal predecessors, (2076), 100 states have call successors, (100), 14 states have call predecessors, (100), 14 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2024-11-28 04:06:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2276 transitions. [2024-11-28 04:06:24,843 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2276 transitions. Word has length 285 [2024-11-28 04:06:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:24,843 INFO L471 AbstractCegarLoop]: Abstraction has 1552 states and 2276 transitions. [2024-11-28 04:06:24,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 6 states have call successors, (88), 4 states have call predecessors, (88), 6 states have return successors, (89), 6 states have call predecessors, (89), 6 states have call successors, (89) [2024-11-28 04:06:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2276 transitions. [2024-11-28 04:06:24,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-11-28 04:06:24,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:24,848 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:24,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:06:25,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-28 04:06:25,049 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:25,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 332779600, now seen corresponding path program 1 times [2024-11-28 04:06:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119487039] [2024-11-28 04:06:25,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 14 proven. 44 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-28 04:06:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119487039] [2024-11-28 04:06:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119487039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196535300] [2024-11-28 04:06:28,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:28,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:28,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:28,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:28,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:06:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:28,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-28 04:06:28,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 173 proven. 1695 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2024-11-28 04:06:30,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:06:31,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196535300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:31,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:06:31,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2024-11-28 04:06:31,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031863625] [2024-11-28 04:06:31,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:06:31,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:06:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:31,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:06:31,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:06:31,530 INFO L87 Difference]: Start difference. First operand 1552 states and 2276 transitions. Second operand has 24 states, 24 states have (on average 6.958333333333333) internal successors, (167), 24 states have internal predecessors, (167), 5 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2024-11-28 04:06:34,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:34,312 INFO L93 Difference]: Finished difference Result 3282 states and 4838 transitions. [2024-11-28 04:06:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:06:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.958333333333333) internal successors, (167), 24 states have internal predecessors, (167), 5 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) Word has length 285 [2024-11-28 04:06:34,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:34,315 INFO L225 Difference]: With dead ends: 3282 [2024-11-28 04:06:34,315 INFO L226 Difference]: Without dead ends: 2272 [2024-11-28 04:06:34,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:06:34,318 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 1593 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:34,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1502 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 04:06:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2024-11-28 04:06:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2116. [2024-11-28 04:06:34,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1953 states have (on average 1.439836149513569) internal successors, (2812), 1953 states have internal predecessors, (2812), 140 states have call successors, (140), 22 states have call predecessors, (140), 22 states have return successors, (140), 140 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-28 04:06:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 3092 transitions. [2024-11-28 04:06:34,473 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 3092 transitions. Word has length 285 [2024-11-28 04:06:34,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:34,474 INFO L471 AbstractCegarLoop]: Abstraction has 2116 states and 3092 transitions. [2024-11-28 04:06:34,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.958333333333333) internal successors, (167), 24 states have internal predecessors, (167), 5 states have call successors, (80), 4 states have call predecessors, (80), 5 states have return successors, (80), 5 states have call predecessors, (80), 5 states have call successors, (80) [2024-11-28 04:06:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 3092 transitions. [2024-11-28 04:06:34,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2024-11-28 04:06:34,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:34,476 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:34,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:06:34,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:34,677 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:06:34,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash 306531297, now seen corresponding path program 1 times [2024-11-28 04:06:34,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:06:34,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410620203] [2024-11-28 04:06:34,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:06:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 22 proven. 35 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-11-28 04:06:35,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:06:35,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410620203] [2024-11-28 04:06:35,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410620203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:35,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553010112] [2024-11-28 04:06:35,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:35,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:35,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:35,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:35,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d02abc33-868f-44da-965f-c36487b1d4ea/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:06:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:35,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:06:35,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 421 proven. 1699 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2024-11-28 04:06:37,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:06:43,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 66 proven. 222 refuted. 0 times theorem prover too weak. 2889 trivial. 0 not checked. [2024-11-28 04:06:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553010112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:06:43,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:06:43,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 18] total 40 [2024-11-28 04:06:43,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104935040] [2024-11-28 04:06:43,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:06:43,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 04:06:43,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:06:43,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 04:06:43,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:06:43,950 INFO L87 Difference]: Start difference. First operand 2116 states and 3092 transitions. Second operand has 40 states, 39 states have (on average 6.564102564102564) internal successors, (256), 38 states have internal predecessors, (256), 10 states have call successors, (120), 5 states have call predecessors, (120), 8 states have return successors, (120), 10 states have call predecessors, (120), 10 states have call successors, (120)