./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/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_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/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_8a37f130-7a15-4d27-aafa-20a3a3314850/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 205f0e0aff0d53187144e7eaaf7c9176a7ca6bc04dd0065235effeefd306421c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:15:07,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:15:07,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:15:07,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:15:07,269 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:15:07,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:15:07,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:15:07,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:15:07,312 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:15:07,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:15:07,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:15:07,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:15:07,313 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:15:07,313 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:15:07,313 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:15:07,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:15:07,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:15:07,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:15:07,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:15:07,316 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:15:07,316 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:15:07,317 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:15:07,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:15:07,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:15:07,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:15:07,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:07,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:07,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:15:07,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:15:07,319 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:15:07,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:15:07,319 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:15:07,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:15:07,319 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_8a37f130-7a15-4d27-aafa-20a3a3314850/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 -> 205f0e0aff0d53187144e7eaaf7c9176a7ca6bc04dd0065235effeefd306421c [2024-11-27 23:15:07,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:15:07,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:15:07,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:15:07,678 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:15:07,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:15:07,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2024-11-27 23:15:10,707 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/data/807a192dd/8adb7fbbfe5146ce8f06ba17755f0026/FLAG3373fc669 [2024-11-27 23:15:10,994 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:15:10,997 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2024-11-27 23:15:11,010 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/data/807a192dd/8adb7fbbfe5146ce8f06ba17755f0026/FLAG3373fc669 [2024-11-27 23:15:11,297 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/data/807a192dd/8adb7fbbfe5146ce8f06ba17755f0026 [2024-11-27 23:15:11,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:15:11,304 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:15:11,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:15:11,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:15:11,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:15:11,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc67080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11, skipping insertion in model container [2024-11-27 23:15:11,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,351 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:15:11,629 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_8a37f130-7a15-4d27-aafa-20a3a3314850/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2024-11-27 23:15:11,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:15:11,647 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:15:11,744 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_8a37f130-7a15-4d27-aafa-20a3a3314850/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c[14511,14524] [2024-11-27 23:15:11,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:15:11,766 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:15:11,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11 WrapperNode [2024-11-27 23:15:11,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:15:11,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:15:11,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:15:11,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:15:11,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,820 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 495 [2024-11-27 23:15:11,820 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:15:11,821 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:15:11,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:15:11,821 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:15:11,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,859 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]. [2024-11-27 23:15:11,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:15:11,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:15:11,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:15:11,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:15:11,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (1/1) ... [2024-11-27 23:15:11,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:11,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:15:11,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:15:11,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a37f130-7a15-4d27-aafa-20a3a3314850/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:15:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:15:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:15:11,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:15:11,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:15:12,061 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:15:12,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:15:12,984 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-27 23:15:12,984 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:15:13,005 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:15:13,007 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:15:13,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:15:13 BoogieIcfgContainer [2024-11-27 23:15:13,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:15:13,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:15:13,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:15:13,018 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:15:13,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:15:11" (1/3) ... [2024-11-27 23:15:13,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad11693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:15:13, skipping insertion in model container [2024-11-27 23:15:13,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:11" (2/3) ... [2024-11-27 23:15:13,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad11693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:15:13, skipping insertion in model container [2024-11-27 23:15:13,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:15:13" (3/3) ... [2024-11-27 23:15:13,021 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c [2024-11-27 23:15:13,036 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:15:13,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c that has 1 procedures, 137 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:15:13,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:15:13,122 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;@47975aeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:15:13,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:15:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7703703703703704) internal successors, (239), 136 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:15:13,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:13,136 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:13,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:13,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:13,142 INFO L85 PathProgramCache]: Analyzing trace with hash 395135632, now seen corresponding path program 1 times [2024-11-27 23:15:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840472136] [2024-11-27 23:15:13,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:13,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:13,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840472136] [2024-11-27 23:15:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840472136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:13,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:15:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582169959] [2024-11-27 23:15:13,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:13,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:15:13,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:13,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:15:13,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:15:13,586 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7703703703703704) internal successors, (239), 136 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:13,620 INFO L93 Difference]: Finished difference Result 211 states and 367 transitions. [2024-11-27 23:15:13,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:15:13,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 23:15:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:13,635 INFO L225 Difference]: With dead ends: 211 [2024-11-27 23:15:13,635 INFO L226 Difference]: Without dead ends: 133 [2024-11-27 23:15:13,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:15:13,645 INFO L435 NwaCegarLoop]: 232 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, 232 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 [2024-11-27 23:15:13,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-27 23:15:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-27 23:15:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7575757575757576) internal successors, (232), 132 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 232 transitions. [2024-11-27 23:15:13,690 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 232 transitions. Word has length 37 [2024-11-27 23:15:13,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:13,692 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 232 transitions. [2024-11-27 23:15:13,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 232 transitions. [2024-11-27 23:15:13,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 23:15:13,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:13,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:13,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:15:13,695 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:13,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:13,696 INFO L85 PathProgramCache]: Analyzing trace with hash -422512818, now seen corresponding path program 1 times [2024-11-27 23:15:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:13,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542106185] [2024-11-27 23:15:13,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:14,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:14,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542106185] [2024-11-27 23:15:14,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542106185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:14,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:14,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:14,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644290564] [2024-11-27 23:15:14,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:14,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:14,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:14,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:14,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:14,194 INFO L87 Difference]: Start difference. First operand 133 states and 232 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:14,301 INFO L93 Difference]: Finished difference Result 210 states and 360 transitions. [2024-11-27 23:15:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:14,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 23:15:14,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:14,305 INFO L225 Difference]: With dead ends: 210 [2024-11-27 23:15:14,305 INFO L226 Difference]: Without dead ends: 133 [2024-11-27 23:15:14,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:14,306 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 0 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:14,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 885 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:14,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-27 23:15:14,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-27 23:15:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2024-11-27 23:15:14,316 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2024-11-27 23:15:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:14,316 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2024-11-27 23:15:14,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2024-11-27 23:15:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 23:15:14,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:14,318 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:14,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:15:14,319 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:14,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1398422292, now seen corresponding path program 1 times [2024-11-27 23:15:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:14,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691544826] [2024-11-27 23:15:14,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:14,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:14,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691544826] [2024-11-27 23:15:14,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691544826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:14,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:14,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:14,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969521415] [2024-11-27 23:15:14,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:14,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:14,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:14,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:14,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:14,550 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:14,644 INFO L93 Difference]: Finished difference Result 265 states and 424 transitions. [2024-11-27 23:15:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:14,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-27 23:15:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:14,646 INFO L225 Difference]: With dead ends: 265 [2024-11-27 23:15:14,646 INFO L226 Difference]: Without dead ends: 192 [2024-11-27 23:15:14,647 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 [2024-11-27 23:15:14,647 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 97 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:14,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 344 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-27 23:15:14,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2024-11-27 23:15:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.553191489361702) internal successors, (292), 188 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 292 transitions. [2024-11-27 23:15:14,663 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 292 transitions. Word has length 66 [2024-11-27 23:15:14,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:14,664 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 292 transitions. [2024-11-27 23:15:14,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,664 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 292 transitions. [2024-11-27 23:15:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 23:15:14,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:14,673 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:14,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:15:14,673 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:14,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:14,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1852534978, now seen corresponding path program 1 times [2024-11-27 23:15:14,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:14,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65668262] [2024-11-27 23:15:14,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:14,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:14,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65668262] [2024-11-27 23:15:14,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65668262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:14,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:14,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643440112] [2024-11-27 23:15:14,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:14,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:14,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:14,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:14,893 INFO L87 Difference]: Start difference. First operand 189 states and 292 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:14,947 INFO L93 Difference]: Finished difference Result 431 states and 692 transitions. [2024-11-27 23:15:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:14,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-27 23:15:14,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:14,950 INFO L225 Difference]: With dead ends: 431 [2024-11-27 23:15:14,954 INFO L226 Difference]: Without dead ends: 302 [2024-11-27 23:15:14,955 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 [2024-11-27 23:15:14,956 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 99 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:14,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 365 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-27 23:15:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 298. [2024-11-27 23:15:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.5858585858585859) internal successors, (471), 297 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 471 transitions. [2024-11-27 23:15:14,989 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 471 transitions. Word has length 68 [2024-11-27 23:15:14,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:14,989 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 471 transitions. [2024-11-27 23:15:14,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 471 transitions. [2024-11-27 23:15:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-27 23:15:14,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:14,991 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:14,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:15:14,991 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:14,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1172652176, now seen corresponding path program 1 times [2024-11-27 23:15:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:14,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663709837] [2024-11-27 23:15:14,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:15,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:15,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663709837] [2024-11-27 23:15:15,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663709837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:15,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:15,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:15,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124711662] [2024-11-27 23:15:15,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:15,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:15,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:15,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:15,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:15,197 INFO L87 Difference]: Start difference. First operand 298 states and 471 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:15,252 INFO L93 Difference]: Finished difference Result 742 states and 1201 transitions. [2024-11-27 23:15:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:15,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-27 23:15:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:15,256 INFO L225 Difference]: With dead ends: 742 [2024-11-27 23:15:15,257 INFO L226 Difference]: Without dead ends: 504 [2024-11-27 23:15:15,259 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 [2024-11-27 23:15:15,261 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 93 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:15,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 366 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-27 23:15:15,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2024-11-27 23:15:15,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.5995975855130784) internal successors, (795), 497 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:15,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 795 transitions. [2024-11-27 23:15:15,307 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 795 transitions. Word has length 70 [2024-11-27 23:15:15,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:15,307 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 795 transitions. [2024-11-27 23:15:15,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:15,308 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 795 transitions. [2024-11-27 23:15:15,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:15:15,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:15,312 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:15,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:15:15,312 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:15,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 648029982, now seen corresponding path program 1 times [2024-11-27 23:15:15,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:15,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437793748] [2024-11-27 23:15:15,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:15,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:15,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:15,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437793748] [2024-11-27 23:15:15,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437793748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:15,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:15,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127268764] [2024-11-27 23:15:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:15,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:15,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:15,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:15,550 INFO L87 Difference]: Start difference. First operand 498 states and 795 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:15,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:15,821 INFO L93 Difference]: Finished difference Result 2494 states and 4085 transitions. [2024-11-27 23:15:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:15:15,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-27 23:15:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:15,835 INFO L225 Difference]: With dead ends: 2494 [2024-11-27 23:15:15,838 INFO L226 Difference]: Without dead ends: 2056 [2024-11-27 23:15:15,839 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:15:15,843 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 812 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:15,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 1144 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:15:15,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2024-11-27 23:15:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 918. [2024-11-27 23:15:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 917 states have (on average 1.612868047982552) internal successors, (1479), 917 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1479 transitions. [2024-11-27 23:15:15,920 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1479 transitions. Word has length 72 [2024-11-27 23:15:15,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:15,921 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1479 transitions. [2024-11-27 23:15:15,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1479 transitions. [2024-11-27 23:15:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-27 23:15:15,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:15,925 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:15,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:15:15,925 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:15,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:15,926 INFO L85 PathProgramCache]: Analyzing trace with hash 986227649, now seen corresponding path program 1 times [2024-11-27 23:15:15,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:15,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967456943] [2024-11-27 23:15:15,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:15,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:16,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967456943] [2024-11-27 23:15:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967456943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722529245] [2024-11-27 23:15:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:16,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:16,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:16,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:16,116 INFO L87 Difference]: Start difference. First operand 918 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:16,240 INFO L93 Difference]: Finished difference Result 3318 states and 5402 transitions. [2024-11-27 23:15:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:15:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-27 23:15:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:16,251 INFO L225 Difference]: With dead ends: 3318 [2024-11-27 23:15:16,251 INFO L226 Difference]: Without dead ends: 2460 [2024-11-27 23:15:16,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:16,254 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 359 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:16,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 578 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:16,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2024-11-27 23:15:16,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1680. [2024-11-27 23:15:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 1.614651578320429) internal successors, (2711), 1679 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2711 transitions. [2024-11-27 23:15:16,324 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2711 transitions. Word has length 73 [2024-11-27 23:15:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:16,325 INFO L471 AbstractCegarLoop]: Abstraction has 1680 states and 2711 transitions. [2024-11-27 23:15:16,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2711 transitions. [2024-11-27 23:15:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-27 23:15:16,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:16,326 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:16,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:15:16,327 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:16,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:16,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1245542219, now seen corresponding path program 1 times [2024-11-27 23:15:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482977021] [2024-11-27 23:15:16,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482977021] [2024-11-27 23:15:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482977021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:16,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:16,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268934021] [2024-11-27 23:15:16,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:16,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:16,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:16,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:16,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:16,494 INFO L87 Difference]: Start difference. First operand 1680 states and 2711 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:16,684 INFO L93 Difference]: Finished difference Result 4944 states and 8046 transitions. [2024-11-27 23:15:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:15:16,685 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-27 23:15:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:16,698 INFO L225 Difference]: With dead ends: 4944 [2024-11-27 23:15:16,698 INFO L226 Difference]: Without dead ends: 3324 [2024-11-27 23:15:16,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:16,702 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 357 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:16,703 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 652 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2024-11-27 23:15:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 2486. [2024-11-27 23:15:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2486 states, 2485 states have (on average 1.6116700201207244) internal successors, (4005), 2485 states have internal predecessors, (4005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4005 transitions. [2024-11-27 23:15:16,802 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4005 transitions. Word has length 74 [2024-11-27 23:15:16,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:16,803 INFO L471 AbstractCegarLoop]: Abstraction has 2486 states and 4005 transitions. [2024-11-27 23:15:16,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4005 transitions. [2024-11-27 23:15:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-27 23:15:16,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:16,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:16,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:15:16,808 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:16,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1541927048, now seen corresponding path program 1 times [2024-11-27 23:15:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:16,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126356352] [2024-11-27 23:15:16,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:16,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:16,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:16,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126356352] [2024-11-27 23:15:16,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126356352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:16,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:16,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:16,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432111221] [2024-11-27 23:15:16,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:16,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:16,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:16,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:16,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:16,944 INFO L87 Difference]: Start difference. First operand 2486 states and 4005 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:17,137 INFO L93 Difference]: Finished difference Result 7296 states and 11834 transitions. [2024-11-27 23:15:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:15:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-27 23:15:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:17,156 INFO L225 Difference]: With dead ends: 7296 [2024-11-27 23:15:17,156 INFO L226 Difference]: Without dead ends: 4870 [2024-11-27 23:15:17,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:17,160 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 355 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:17,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:17,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2024-11-27 23:15:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 3656. [2024-11-27 23:15:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3655 states have (on average 1.6073871409028728) internal successors, (5875), 3655 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5875 transitions. [2024-11-27 23:15:17,289 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5875 transitions. Word has length 75 [2024-11-27 23:15:17,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:17,289 INFO L471 AbstractCegarLoop]: Abstraction has 3656 states and 5875 transitions. [2024-11-27 23:15:17,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5875 transitions. [2024-11-27 23:15:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:15:17,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:17,291 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:17,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:15:17,292 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:17,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash 268884983, now seen corresponding path program 1 times [2024-11-27 23:15:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575162148] [2024-11-27 23:15:17,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575162148] [2024-11-27 23:15:17,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575162148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:17,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:17,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649996201] [2024-11-27 23:15:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:17,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:17,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:17,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:17,403 INFO L87 Difference]: Start difference. First operand 3656 states and 5875 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:17,549 INFO L93 Difference]: Finished difference Result 8284 states and 13306 transitions. [2024-11-27 23:15:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:17,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 23:15:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:17,572 INFO L225 Difference]: With dead ends: 8284 [2024-11-27 23:15:17,572 INFO L226 Difference]: Without dead ends: 5684 [2024-11-27 23:15:17,576 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 [2024-11-27 23:15:17,577 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 92 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:17,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 413 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:17,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2024-11-27 23:15:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5682. [2024-11-27 23:15:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5682 states, 5681 states have (on average 1.588804787889456) internal successors, (9026), 5681 states have internal predecessors, (9026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5682 states to 5682 states and 9026 transitions. [2024-11-27 23:15:17,806 INFO L78 Accepts]: Start accepts. Automaton has 5682 states and 9026 transitions. Word has length 76 [2024-11-27 23:15:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:17,806 INFO L471 AbstractCegarLoop]: Abstraction has 5682 states and 9026 transitions. [2024-11-27 23:15:17,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5682 states and 9026 transitions. [2024-11-27 23:15:17,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:15:17,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:17,808 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:17,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:15:17,809 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:17,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1813417673, now seen corresponding path program 1 times [2024-11-27 23:15:17,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:17,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684019162] [2024-11-27 23:15:17,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:17,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:17,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684019162] [2024-11-27 23:15:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684019162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:17,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:17,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215309078] [2024-11-27 23:15:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:17,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:17,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:17,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:17,902 INFO L87 Difference]: Start difference. First operand 5682 states and 9026 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:18,135 INFO L93 Difference]: Finished difference Result 12456 states and 19800 transitions. [2024-11-27 23:15:18,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:18,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 23:15:18,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:18,181 INFO L225 Difference]: With dead ends: 12456 [2024-11-27 23:15:18,185 INFO L226 Difference]: Without dead ends: 8428 [2024-11-27 23:15:18,189 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 [2024-11-27 23:15:18,191 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 98 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:18,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 441 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8428 states. [2024-11-27 23:15:18,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8428 to 8426. [2024-11-27 23:15:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8426 states, 8425 states have (on average 1.5717507418397627) internal successors, (13242), 8425 states have internal predecessors, (13242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 13242 transitions. [2024-11-27 23:15:18,524 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 13242 transitions. Word has length 76 [2024-11-27 23:15:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:18,524 INFO L471 AbstractCegarLoop]: Abstraction has 8426 states and 13242 transitions. [2024-11-27 23:15:18,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 13242 transitions. [2024-11-27 23:15:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:15:18,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:18,525 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:18,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:15:18,526 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:18,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1616320119, now seen corresponding path program 1 times [2024-11-27 23:15:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853024658] [2024-11-27 23:15:18,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:18,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:18,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853024658] [2024-11-27 23:15:18,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853024658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:18,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:18,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:18,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157583197] [2024-11-27 23:15:18,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:18,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:18,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:18,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:18,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:18,620 INFO L87 Difference]: Start difference. First operand 8426 states and 13242 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:18,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:18,917 INFO L93 Difference]: Finished difference Result 20215 states and 31930 transitions. [2024-11-27 23:15:18,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:18,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-27 23:15:18,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:18,952 INFO L225 Difference]: With dead ends: 20215 [2024-11-27 23:15:18,952 INFO L226 Difference]: Without dead ends: 11867 [2024-11-27 23:15:18,962 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 [2024-11-27 23:15:18,962 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:18,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 461 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:18,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2024-11-27 23:15:19,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 11865. [2024-11-27 23:15:19,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11865 states, 11864 states have (on average 1.5761968981793661) internal successors, (18700), 11864 states have internal predecessors, (18700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 18700 transitions. [2024-11-27 23:15:19,455 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 18700 transitions. Word has length 76 [2024-11-27 23:15:19,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:19,455 INFO L471 AbstractCegarLoop]: Abstraction has 11865 states and 18700 transitions. [2024-11-27 23:15:19,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:19,456 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 18700 transitions. [2024-11-27 23:15:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 23:15:19,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:19,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:19,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:15:19,457 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:19,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2139270896, now seen corresponding path program 1 times [2024-11-27 23:15:19,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:19,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757384965] [2024-11-27 23:15:19,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:19,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:19,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757384965] [2024-11-27 23:15:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757384965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:19,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:19,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:19,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934690005] [2024-11-27 23:15:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:19,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:19,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:19,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:19,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:19,848 INFO L87 Difference]: Start difference. First operand 11865 states and 18700 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:20,169 INFO L93 Difference]: Finished difference Result 23654 states and 37297 transitions. [2024-11-27 23:15:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:20,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-27 23:15:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:20,199 INFO L225 Difference]: With dead ends: 23654 [2024-11-27 23:15:20,200 INFO L226 Difference]: Without dead ends: 11867 [2024-11-27 23:15:20,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:15:20,212 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 189 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:20,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 537 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2024-11-27 23:15:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 11865. [2024-11-27 23:15:20,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11865 states, 11864 states have (on average 1.563553607552259) internal successors, (18550), 11864 states have internal predecessors, (18550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11865 states to 11865 states and 18550 transitions. [2024-11-27 23:15:20,629 INFO L78 Accepts]: Start accepts. Automaton has 11865 states and 18550 transitions. Word has length 77 [2024-11-27 23:15:20,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:20,631 INFO L471 AbstractCegarLoop]: Abstraction has 11865 states and 18550 transitions. [2024-11-27 23:15:20,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:20,631 INFO L276 IsEmpty]: Start isEmpty. Operand 11865 states and 18550 transitions. [2024-11-27 23:15:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-27 23:15:20,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:20,632 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:20,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:15:20,632 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:20,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:20,633 INFO L85 PathProgramCache]: Analyzing trace with hash -297465128, now seen corresponding path program 1 times [2024-11-27 23:15:20,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:20,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404800722] [2024-11-27 23:15:20,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:20,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:20,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404800722] [2024-11-27 23:15:20,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404800722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:20,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:20,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462930069] [2024-11-27 23:15:20,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:20,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:20,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:20,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:20,922 INFO L87 Difference]: Start difference. First operand 11865 states and 18550 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:21,526 INFO L93 Difference]: Finished difference Result 34237 states and 53673 transitions. [2024-11-27 23:15:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-27 23:15:21,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:21,595 INFO L225 Difference]: With dead ends: 34237 [2024-11-27 23:15:21,596 INFO L226 Difference]: Without dead ends: 22450 [2024-11-27 23:15:21,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:15:21,613 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 93 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:21,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 715 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22450 states. [2024-11-27 23:15:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22450 to 22448. [2024-11-27 23:15:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22448 states, 22447 states have (on average 1.5508531206842786) internal successors, (34812), 22447 states have internal predecessors, (34812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22448 states to 22448 states and 34812 transitions. [2024-11-27 23:15:22,484 INFO L78 Accepts]: Start accepts. Automaton has 22448 states and 34812 transitions. Word has length 80 [2024-11-27 23:15:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:22,485 INFO L471 AbstractCegarLoop]: Abstraction has 22448 states and 34812 transitions. [2024-11-27 23:15:22,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 22448 states and 34812 transitions. [2024-11-27 23:15:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-27 23:15:22,486 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:22,488 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:22,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:15:22,489 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:22,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1060060007, now seen corresponding path program 1 times [2024-11-27 23:15:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276598726] [2024-11-27 23:15:22,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:22,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:23,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:23,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276598726] [2024-11-27 23:15:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276598726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:15:23,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226093957] [2024-11-27 23:15:23,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:23,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:15:23,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:23,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:15:23,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:15:23,179 INFO L87 Difference]: Start difference. First operand 22448 states and 34812 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:23,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:23,682 INFO L93 Difference]: Finished difference Result 23611 states and 36361 transitions. [2024-11-27 23:15:23,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:15:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-27 23:15:23,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:23,750 INFO L225 Difference]: With dead ends: 23611 [2024-11-27 23:15:23,750 INFO L226 Difference]: Without dead ends: 23609 [2024-11-27 23:15:23,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:15:23,761 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:23,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1354 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23609 states. [2024-11-27 23:15:24,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23609 to 23609. [2024-11-27 23:15:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23609 states, 23608 states have (on average 1.5233819044391732) internal successors, (35964), 23608 states have internal predecessors, (35964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23609 states to 23609 states and 35964 transitions. [2024-11-27 23:15:24,436 INFO L78 Accepts]: Start accepts. Automaton has 23609 states and 35964 transitions. Word has length 81 [2024-11-27 23:15:24,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:24,437 INFO L471 AbstractCegarLoop]: Abstraction has 23609 states and 35964 transitions. [2024-11-27 23:15:24,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 23609 states and 35964 transitions. [2024-11-27 23:15:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-27 23:15:24,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:24,439 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:24,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:15:24,440 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:24,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1195435618, now seen corresponding path program 1 times [2024-11-27 23:15:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718227388] [2024-11-27 23:15:24,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:15:24,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:24,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718227388] [2024-11-27 23:15:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718227388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:24,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207807591] [2024-11-27 23:15:24,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:24,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:24,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:24,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:24,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:24,747 INFO L87 Difference]: Start difference. First operand 23609 states and 35964 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:25,382 INFO L93 Difference]: Finished difference Result 59107 states and 90255 transitions. [2024-11-27 23:15:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:25,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-27 23:15:25,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:25,501 INFO L225 Difference]: With dead ends: 59107 [2024-11-27 23:15:25,501 INFO L226 Difference]: Without dead ends: 48161 [2024-11-27 23:15:25,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:15:25,526 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 452 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:25,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 823 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48161 states. [2024-11-27 23:15:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48161 to 37091. [2024-11-27 23:15:26,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37091 states, 37090 states have (on average 1.5195740091668914) internal successors, (56361), 37090 states have internal predecessors, (56361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:26,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37091 states to 37091 states and 56361 transitions. [2024-11-27 23:15:26,571 INFO L78 Accepts]: Start accepts. Automaton has 37091 states and 56361 transitions. Word has length 109 [2024-11-27 23:15:26,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:26,573 INFO L471 AbstractCegarLoop]: Abstraction has 37091 states and 56361 transitions. [2024-11-27 23:15:26,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:26,573 INFO L276 IsEmpty]: Start isEmpty. Operand 37091 states and 56361 transitions. [2024-11-27 23:15:26,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-27 23:15:26,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:26,576 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:26,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:15:26,576 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:26,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash -886867038, now seen corresponding path program 1 times [2024-11-27 23:15:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298232363] [2024-11-27 23:15:26,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:15:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298232363] [2024-11-27 23:15:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298232363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531715483] [2024-11-27 23:15:26,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:26,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:26,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:26,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:26,839 INFO L87 Difference]: Start difference. First operand 37091 states and 56361 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:27,894 INFO L93 Difference]: Finished difference Result 63523 states and 97023 transitions. [2024-11-27 23:15:27,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:27,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-27 23:15:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:28,049 INFO L225 Difference]: With dead ends: 63523 [2024-11-27 23:15:28,049 INFO L226 Difference]: Without dead ends: 52577 [2024-11-27 23:15:28,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:15:28,071 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 449 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:28,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 876 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52577 states. [2024-11-27 23:15:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52577 to 50355. [2024-11-27 23:15:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50355 states, 50354 states have (on average 1.5203360209715215) internal successors, (76555), 50354 states have internal predecessors, (76555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:29,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50355 states to 50355 states and 76555 transitions. [2024-11-27 23:15:29,471 INFO L78 Accepts]: Start accepts. Automaton has 50355 states and 76555 transitions. Word has length 109 [2024-11-27 23:15:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:29,472 INFO L471 AbstractCegarLoop]: Abstraction has 50355 states and 76555 transitions. [2024-11-27 23:15:29,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 50355 states and 76555 transitions. [2024-11-27 23:15:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-27 23:15:29,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:29,475 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:29,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:15:29,476 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:29,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1752096542, now seen corresponding path program 1 times [2024-11-27 23:15:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994475426] [2024-11-27 23:15:29,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:15:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:29,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994475426] [2024-11-27 23:15:29,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994475426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:29,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:29,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:29,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711718499] [2024-11-27 23:15:29,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:29,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:29,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:29,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:29,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:29,680 INFO L87 Difference]: Start difference. First operand 50355 states and 76555 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:30,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:30,882 INFO L93 Difference]: Finished difference Result 74957 states and 114494 transitions. [2024-11-27 23:15:30,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:30,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-27 23:15:30,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:31,008 INFO L225 Difference]: With dead ends: 74957 [2024-11-27 23:15:31,009 INFO L226 Difference]: Without dead ends: 61345 [2024-11-27 23:15:31,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:15:31,033 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 440 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:31,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 927 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61345 states. [2024-11-27 23:15:32,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61345 to 59123. [2024-11-27 23:15:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59123 states, 59122 states have (on average 1.5219546023476878) internal successors, (89981), 59122 states have internal predecessors, (89981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59123 states to 59123 states and 89981 transitions. [2024-11-27 23:15:32,867 INFO L78 Accepts]: Start accepts. Automaton has 59123 states and 89981 transitions. Word has length 109 [2024-11-27 23:15:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:32,867 INFO L471 AbstractCegarLoop]: Abstraction has 59123 states and 89981 transitions. [2024-11-27 23:15:32,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 59123 states and 89981 transitions. [2024-11-27 23:15:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:15:32,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:32,870 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:32,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:15:32,871 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:32,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 19451263, now seen corresponding path program 1 times [2024-11-27 23:15:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:32,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515038671] [2024-11-27 23:15:32,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:32,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:15:32,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:33,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515038671] [2024-11-27 23:15:33,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515038671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:33,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:33,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:33,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881599013] [2024-11-27 23:15:33,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:33,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:33,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:33,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:33,004 INFO L87 Difference]: Start difference. First operand 59123 states and 89981 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:34,677 INFO L93 Difference]: Finished difference Result 140669 states and 214402 transitions. [2024-11-27 23:15:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:34,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-27 23:15:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:34,859 INFO L225 Difference]: With dead ends: 140669 [2024-11-27 23:15:34,859 INFO L226 Difference]: Without dead ends: 100375 [2024-11-27 23:15:34,892 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 [2024-11-27 23:15:34,892 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:34,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 366 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:34,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100375 states. [2024-11-27 23:15:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100375 to 100170. [2024-11-27 23:15:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100170 states, 100169 states have (on average 1.5203905399874214) internal successors, (152296), 100169 states have internal predecessors, (152296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:37,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100170 states to 100170 states and 152296 transitions. [2024-11-27 23:15:37,414 INFO L78 Accepts]: Start accepts. Automaton has 100170 states and 152296 transitions. Word has length 110 [2024-11-27 23:15:37,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:37,415 INFO L471 AbstractCegarLoop]: Abstraction has 100170 states and 152296 transitions. [2024-11-27 23:15:37,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 100170 states and 152296 transitions. [2024-11-27 23:15:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 23:15:37,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:37,418 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:37,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:15:37,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:37,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash -403250563, now seen corresponding path program 1 times [2024-11-27 23:15:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:37,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770052996] [2024-11-27 23:15:37,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:15:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770052996] [2024-11-27 23:15:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770052996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:37,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:37,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301978658] [2024-11-27 23:15:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:37,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:37,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:37,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:37,562 INFO L87 Difference]: Start difference. First operand 100170 states and 152296 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:39,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:39,517 INFO L93 Difference]: Finished difference Result 184883 states and 282023 transitions. [2024-11-27 23:15:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:15:39,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2024-11-27 23:15:39,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:39,753 INFO L225 Difference]: With dead ends: 184883 [2024-11-27 23:15:39,753 INFO L226 Difference]: Without dead ends: 140207 [2024-11-27 23:15:39,793 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:39,794 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 191 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:39,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 609 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140207 states. [2024-11-27 23:15:42,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140207 to 135714. [2024-11-27 23:15:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135714 states, 135713 states have (on average 1.516988055676317) internal successors, (205875), 135713 states have internal predecessors, (205875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:43,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135714 states to 135714 states and 205875 transitions. [2024-11-27 23:15:43,131 INFO L78 Accepts]: Start accepts. Automaton has 135714 states and 205875 transitions. Word has length 110 [2024-11-27 23:15:43,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:43,132 INFO L471 AbstractCegarLoop]: Abstraction has 135714 states and 205875 transitions. [2024-11-27 23:15:43,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:43,132 INFO L276 IsEmpty]: Start isEmpty. Operand 135714 states and 205875 transitions. [2024-11-27 23:15:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:15:43,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:43,135 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:43,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:15:43,135 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:43,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1187171385, now seen corresponding path program 1 times [2024-11-27 23:15:43,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:43,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714793778] [2024-11-27 23:15:43,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:43,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:15:43,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714793778] [2024-11-27 23:15:43,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714793778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:43,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:43,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362634397] [2024-11-27 23:15:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:43,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:43,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:43,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:43,301 INFO L87 Difference]: Start difference. First operand 135714 states and 205875 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:46,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:46,290 INFO L93 Difference]: Finished difference Result 206334 states and 314440 transitions. [2024-11-27 23:15:46,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:15:46,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-27 23:15:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:46,597 INFO L225 Difference]: With dead ends: 206334 [2024-11-27 23:15:46,598 INFO L226 Difference]: Without dead ends: 167968 [2024-11-27 23:15:46,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:46,660 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 197 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:46,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 609 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167968 states. [2024-11-27 23:15:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167968 to 159116. [2024-11-27 23:15:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159116 states, 159115 states have (on average 1.5164566508500141) internal successors, (241291), 159115 states have internal predecessors, (241291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159116 states to 159116 states and 241291 transitions. [2024-11-27 23:15:50,527 INFO L78 Accepts]: Start accepts. Automaton has 159116 states and 241291 transitions. Word has length 111 [2024-11-27 23:15:50,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:50,527 INFO L471 AbstractCegarLoop]: Abstraction has 159116 states and 241291 transitions. [2024-11-27 23:15:50,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 159116 states and 241291 transitions. [2024-11-27 23:15:50,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:15:50,530 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:50,531 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:50,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:15:50,531 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:50,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash 166103031, now seen corresponding path program 1 times [2024-11-27 23:15:50,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:50,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327165797] [2024-11-27 23:15:50,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:50,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:15:50,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:50,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327165797] [2024-11-27 23:15:50,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327165797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:50,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546581692] [2024-11-27 23:15:50,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:50,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:50,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:50,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:50,668 INFO L87 Difference]: Start difference. First operand 159116 states and 241291 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:15:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:54,902 INFO L93 Difference]: Finished difference Result 336554 states and 511577 transitions. [2024-11-27 23:15:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:54,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-27 23:15:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:55,314 INFO L225 Difference]: With dead ends: 336554 [2024-11-27 23:15:55,314 INFO L226 Difference]: Without dead ends: 261260 [2024-11-27 23:15:55,363 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 [2024-11-27 23:15:55,365 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 81 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:55,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 367 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261260 states. [2024-11-27 23:16:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261260 to 260526. [2024-11-27 23:16:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260526 states, 260525 states have (on average 1.514422800115152) internal successors, (394545), 260525 states have internal predecessors, (394545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260526 states to 260526 states and 394545 transitions. [2024-11-27 23:16:01,489 INFO L78 Accepts]: Start accepts. Automaton has 260526 states and 394545 transitions. Word has length 111 [2024-11-27 23:16:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:16:01,489 INFO L471 AbstractCegarLoop]: Abstraction has 260526 states and 394545 transitions. [2024-11-27 23:16:01,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:16:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 260526 states and 394545 transitions. [2024-11-27 23:16:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-27 23:16:01,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:16:01,493 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:16:01,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:16:01,493 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:16:01,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:16:01,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1809869492, now seen corresponding path program 1 times [2024-11-27 23:16:01,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:16:01,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145524219] [2024-11-27 23:16:01,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:16:01,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:16:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:16:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:16:01,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:16:01,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145524219] [2024-11-27 23:16:01,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145524219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:16:01,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:16:01,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:16:01,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649269200] [2024-11-27 23:16:01,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:16:01,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:16:01,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:16:01,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:16:01,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:16:01,608 INFO L87 Difference]: Start difference. First operand 260526 states and 394545 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)