./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd --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 aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:15:55,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:15:55,931 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:15:55,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:15:55,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:15:55,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:15:55,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:15:55,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:15:55,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:15:55,982 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:15:55,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:15:55,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:15:55,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:15:55,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:15:55,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:15:55,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:15:55,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:15:55,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:15:55,986 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:15:55,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:15:55,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:15:55,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:15:55,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:15:55,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:15:55,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:15:55,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:15:55,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:15:55,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:15:55,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:15:55,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:15:55,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:15:55,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:15:55,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:15:55,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:15:55,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:15:55,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:15:55,989 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_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd 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 -> aa83d3f5173117ef698c13f0bcf19338ee3f6f59e63ac9b8ac7bd80f7d40c635 [2024-11-13 14:15:56,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:15:56,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:15:56,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:15:56,409 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:15:56,409 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:15:56,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c Unable to find full path for "g++" [2024-11-13 14:15:58,766 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:15:59,575 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:15:59,576 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-13 14:15:59,625 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/data/941a76d37/bbc5c5ad4d32434a9afc02f3b254117f/FLAG9e2c3dd22 [2024-11-13 14:15:59,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/data/941a76d37/bbc5c5ad4d32434a9afc02f3b254117f [2024-11-13 14:15:59,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:15:59,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:15:59,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:15:59,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:15:59,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:15:59,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:15:59" (1/1) ... [2024-11-13 14:15:59,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67dd61f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:59, skipping insertion in model container [2024-11-13 14:15:59,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:15:59" (1/1) ... [2024-11-13 14:15:59,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:16:00,234 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_888536d1-9d5e-4282-956c-a5c9db65ecd3/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2024-11-13 14:16:00,318 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_888536d1-9d5e-4282-956c-a5c9db65ecd3/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2024-11-13 14:16:01,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:16:01,402 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:16:01,464 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_888536d1-9d5e-4282-956c-a5c9db65ecd3/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[8786,8799] [2024-11-13 14:16:01,489 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_888536d1-9d5e-4282-956c-a5c9db65ecd3/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[14341,14354] [2024-11-13 14:16:02,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:16:02,158 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:16:02,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02 WrapperNode [2024-11-13 14:16:02,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:16:02,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:16:02,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:16:02,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:16:02,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:02,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:02,804 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2024-11-13 14:16:02,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:16:02,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:16:02,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:16:02,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:16:02,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:02,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:02,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,171 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]. [2024-11-13 14:16:03,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,440 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:16:03,441 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:16:03,441 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:16:03,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:16:03,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (1/1) ... [2024-11-13 14:16:03,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:16:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:03,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:16:03,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:16:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:16:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:16:03,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:16:03,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:16:03,722 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:16:03,725 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:16:11,727 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-13 14:16:11,728 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:16:11,788 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:16:11,788 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:16:11,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:16:11 BoogieIcfgContainer [2024-11-13 14:16:11,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:16:11,795 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:16:11,795 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:16:11,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:16:11,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:15:59" (1/3) ... [2024-11-13 14:16:11,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a528b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:16:11, skipping insertion in model container [2024-11-13 14:16:11,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:02" (2/3) ... [2024-11-13 14:16:11,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a528b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:16:11, skipping insertion in model container [2024-11-13 14:16:11,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:16:11" (3/3) ... [2024-11-13 14:16:11,808 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-13 14:16:11,829 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:16:11,832 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c that has 1 procedures, 885 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 14:16:11,934 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:16:11,949 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;@34d603f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:16:11,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 14:16:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 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) [2024-11-13 14:16:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:16:11,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:11,975 INFO L215 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] [2024-11-13 14:16:11,976 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:11,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1342635826, now seen corresponding path program 1 times [2024-11-13 14:16:11,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:11,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000402140] [2024-11-13 14:16:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:11,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:12,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:12,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000402140] [2024-11-13 14:16:12,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000402140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:12,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:16:12,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5418228] [2024-11-13 14:16:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:12,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:16:12,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:12,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:16:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:16:12,361 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-11-13 14:16:12,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:12,517 INFO L93 Difference]: Finished difference Result 1739 states and 3306 transitions. [2024-11-13 14:16:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:16:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2024-11-13 14:16:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:12,538 INFO L225 Difference]: With dead ends: 1739 [2024-11-13 14:16:12,538 INFO L226 Difference]: Without dead ends: 819 [2024-11-13 14:16:12,549 INFO L431 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 [2024-11-13 14:16:12,554 INFO L432 NwaCegarLoop]: 1612 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, 1612 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 [2024-11-13 14:16:12,555 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:12,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-13 14:16:12,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-13 14:16:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 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) [2024-11-13 14:16:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2024-11-13 14:16:12,703 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2024-11-13 14:16:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:12,703 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2024-11-13 14:16:12,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2024-11-13 14:16:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2024-11-13 14:16:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:16:12,709 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:12,709 INFO L215 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] [2024-11-13 14:16:12,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:16:12,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:12,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:12,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1931263116, now seen corresponding path program 1 times [2024-11-13 14:16:12,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:12,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78192231] [2024-11-13 14:16:12,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:12,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:13,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:13,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78192231] [2024-11-13 14:16:13,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78192231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:13,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:13,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:16:13,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033093542] [2024-11-13 14:16:13,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:13,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:16:13,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:16:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:16:13,114 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-13 14:16:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:13,309 INFO L93 Difference]: Finished difference Result 859 states and 1609 transitions. [2024-11-13 14:16:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:16:13,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2024-11-13 14:16:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:13,316 INFO L225 Difference]: With dead ends: 859 [2024-11-13 14:16:13,316 INFO L226 Difference]: Without dead ends: 819 [2024-11-13 14:16:13,317 INFO L431 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 [2024-11-13 14:16:13,318 INFO L432 NwaCegarLoop]: 1546 mSDtfsCounter, 0 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6156 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:13,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6156 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-11-13 14:16:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-11-13 14:16:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 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) [2024-11-13 14:16:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2024-11-13 14:16:13,352 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2024-11-13 14:16:13,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:13,353 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2024-11-13 14:16:13,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2024-11-13 14:16:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2024-11-13 14:16:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:16:13,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:13,355 INFO L215 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] [2024-11-13 14:16:13,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:16:13,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:13,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1933304313, now seen corresponding path program 1 times [2024-11-13 14:16:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555555108] [2024-11-13 14:16:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:13,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:13,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555555108] [2024-11-13 14:16:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555555108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:16:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112913787] [2024-11-13 14:16:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:13,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:16:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:16:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:16:13,628 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-13 14:16:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:13,924 INFO L93 Difference]: Finished difference Result 1107 states and 1981 transitions. [2024-11-13 14:16:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:16:13,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2024-11-13 14:16:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:13,932 INFO L225 Difference]: With dead ends: 1107 [2024-11-13 14:16:13,932 INFO L226 Difference]: Without dead ends: 1071 [2024-11-13 14:16:13,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:16:13,934 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:13,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:13,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-13 14:16:13,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 853. [2024-11-13 14:16:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8554641598119859) internal successors, (1579), 852 states have internal predecessors, (1579), 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) [2024-11-13 14:16:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1579 transitions. [2024-11-13 14:16:13,969 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1579 transitions. Word has length 44 [2024-11-13 14:16:13,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:13,969 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1579 transitions. [2024-11-13 14:16:13,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2024-11-13 14:16:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1579 transitions. [2024-11-13 14:16:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:16:13,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:13,971 INFO L215 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] [2024-11-13 14:16:13,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:16:13,972 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:13,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash 466188703, now seen corresponding path program 1 times [2024-11-13 14:16:13,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:13,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799010762] [2024-11-13 14:16:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:13,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:14,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799010762] [2024-11-13 14:16:14,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799010762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:14,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:14,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:16:14,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286819986] [2024-11-13 14:16:14,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:14,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:16:14,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:16:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:16:14,421 INFO L87 Difference]: Start difference. First operand 853 states and 1579 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2024-11-13 14:16:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:14,606 INFO L93 Difference]: Finished difference Result 925 states and 1691 transitions. [2024-11-13 14:16:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:16:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2024-11-13 14:16:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:14,612 INFO L225 Difference]: With dead ends: 925 [2024-11-13 14:16:14,612 INFO L226 Difference]: Without dead ends: 855 [2024-11-13 14:16:14,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:16:14,614 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 5924 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:14,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1678 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:14,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2024-11-13 14:16:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 853. [2024-11-13 14:16:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.854289071680376) internal successors, (1578), 852 states have internal predecessors, (1578), 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) [2024-11-13 14:16:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1578 transitions. [2024-11-13 14:16:14,652 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1578 transitions. Word has length 46 [2024-11-13 14:16:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:14,653 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1578 transitions. [2024-11-13 14:16:14,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2024-11-13 14:16:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1578 transitions. [2024-11-13 14:16:14,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:16:14,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:14,654 INFO L215 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] [2024-11-13 14:16:14,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:16:14,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:14,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:14,655 INFO L85 PathProgramCache]: Analyzing trace with hash 399695191, now seen corresponding path program 1 times [2024-11-13 14:16:14,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802124983] [2024-11-13 14:16:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:14,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:14,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:14,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802124983] [2024-11-13 14:16:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802124983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:14,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:14,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:14,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678602782] [2024-11-13 14:16:14,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:14,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:14,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:14,813 INFO L87 Difference]: Start difference. First operand 853 states and 1578 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-13 14:16:14,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:14,860 INFO L93 Difference]: Finished difference Result 982 states and 1779 transitions. [2024-11-13 14:16:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2024-11-13 14:16:14,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:14,865 INFO L225 Difference]: With dead ends: 982 [2024-11-13 14:16:14,865 INFO L226 Difference]: Without dead ends: 912 [2024-11-13 14:16:14,866 INFO L431 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 [2024-11-13 14:16:14,867 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:14,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1576 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-13 14:16:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-11-13 14:16:14,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8337004405286343) internal successors, (1665), 909 states have internal predecessors, (1665), 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) [2024-11-13 14:16:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1665 transitions. [2024-11-13 14:16:14,901 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1665 transitions. Word has length 46 [2024-11-13 14:16:14,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:14,901 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1665 transitions. [2024-11-13 14:16:14,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-13 14:16:14,902 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1665 transitions. [2024-11-13 14:16:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:16:14,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:14,903 INFO L215 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] [2024-11-13 14:16:14,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:16:14,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:14,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1152224751, now seen corresponding path program 1 times [2024-11-13 14:16:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700730000] [2024-11-13 14:16:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:15,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700730000] [2024-11-13 14:16:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700730000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:15,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:15,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:16:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523430393] [2024-11-13 14:16:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:15,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:16:15,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:16:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:16:15,275 INFO L87 Difference]: Start difference. First operand 910 states and 1665 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-11-13 14:16:15,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:15,335 INFO L93 Difference]: Finished difference Result 918 states and 1674 transitions. [2024-11-13 14:16:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:16:15,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2024-11-13 14:16:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:15,343 INFO L225 Difference]: With dead ends: 918 [2024-11-13 14:16:15,343 INFO L226 Difference]: Without dead ends: 916 [2024-11-13 14:16:15,344 INFO L431 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 [2024-11-13 14:16:15,344 INFO L432 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:15,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:15,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-11-13 14:16:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2024-11-13 14:16:15,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8271334792122538) internal successors, (1670), 915 states have internal predecessors, (1670), 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) [2024-11-13 14:16:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1670 transitions. [2024-11-13 14:16:15,379 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1670 transitions. Word has length 47 [2024-11-13 14:16:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:15,380 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1670 transitions. [2024-11-13 14:16:15,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-11-13 14:16:15,380 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1670 transitions. [2024-11-13 14:16:15,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:16:15,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:15,382 INFO L215 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] [2024-11-13 14:16:15,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:16:15,382 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:15,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:15,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1996531839, now seen corresponding path program 1 times [2024-11-13 14:16:15,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:15,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174399647] [2024-11-13 14:16:15,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:15,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:15,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:15,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174399647] [2024-11-13 14:16:15,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174399647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:15,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:15,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:15,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445531267] [2024-11-13 14:16:15,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:15,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:15,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:15,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:15,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:15,484 INFO L87 Difference]: Start difference. First operand 916 states and 1670 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:15,525 INFO L93 Difference]: Finished difference Result 1062 states and 1891 transitions. [2024-11-13 14:16:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-11-13 14:16:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:15,530 INFO L225 Difference]: With dead ends: 1062 [2024-11-13 14:16:15,531 INFO L226 Difference]: Without dead ends: 986 [2024-11-13 14:16:15,531 INFO L431 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 [2024-11-13 14:16:15,532 INFO L432 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:15,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:15,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-11-13 14:16:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-11-13 14:16:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.8034623217922607) internal successors, (1771), 983 states have internal predecessors, (1771), 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) [2024-11-13 14:16:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1771 transitions. [2024-11-13 14:16:15,564 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1771 transitions. Word has length 48 [2024-11-13 14:16:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:15,565 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1771 transitions. [2024-11-13 14:16:15,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1771 transitions. [2024-11-13 14:16:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:16:15,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:15,566 INFO L215 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] [2024-11-13 14:16:15,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:16:15,566 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:15,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1019325055, now seen corresponding path program 1 times [2024-11-13 14:16:15,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:15,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286202266] [2024-11-13 14:16:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:15,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:15,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286202266] [2024-11-13 14:16:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286202266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:15,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386682693] [2024-11-13 14:16:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:15,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:15,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:15,645 INFO L87 Difference]: Start difference. First operand 984 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:15,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:15,693 INFO L93 Difference]: Finished difference Result 1358 states and 2331 transitions. [2024-11-13 14:16:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:15,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-11-13 14:16:15,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:15,701 INFO L225 Difference]: With dead ends: 1358 [2024-11-13 14:16:15,702 INFO L226 Difference]: Without dead ends: 1159 [2024-11-13 14:16:15,703 INFO L431 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 [2024-11-13 14:16:15,703 INFO L432 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:15,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:15,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-13 14:16:15,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-11-13 14:16:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7515151515151515) internal successors, (2023), 1156 states have internal predecessors, (2023), 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) [2024-11-13 14:16:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2023 transitions. [2024-11-13 14:16:15,750 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2023 transitions. Word has length 48 [2024-11-13 14:16:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:15,750 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2023 transitions. [2024-11-13 14:16:15,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2023 transitions. [2024-11-13 14:16:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:16:15,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:15,751 INFO L215 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] [2024-11-13 14:16:15,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:16:15,752 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:15,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:15,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1494709377, now seen corresponding path program 1 times [2024-11-13 14:16:15,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:15,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517675173] [2024-11-13 14:16:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:15,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517675173] [2024-11-13 14:16:15,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517675173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:15,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:15,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693811032] [2024-11-13 14:16:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:15,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:15,876 INFO L87 Difference]: Start difference. First operand 1157 states and 2023 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:15,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:15,936 INFO L93 Difference]: Finished difference Result 1853 states and 3045 transitions. [2024-11-13 14:16:15,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:15,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-11-13 14:16:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:15,947 INFO L225 Difference]: With dead ends: 1853 [2024-11-13 14:16:15,947 INFO L226 Difference]: Without dead ends: 1481 [2024-11-13 14:16:15,948 INFO L431 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 [2024-11-13 14:16:15,951 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:15,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:15,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-11-13 14:16:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2024-11-13 14:16:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6784021665538253) internal successors, (2479), 1478 states have internal predecessors, (2479), 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) [2024-11-13 14:16:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2479 transitions. [2024-11-13 14:16:16,008 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2479 transitions. Word has length 48 [2024-11-13 14:16:16,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:16,009 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2479 transitions. [2024-11-13 14:16:16,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:16,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2479 transitions. [2024-11-13 14:16:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:16:16,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:16,011 INFO L215 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] [2024-11-13 14:16:16,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:16:16,012 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:16,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:16,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1060173441, now seen corresponding path program 1 times [2024-11-13 14:16:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039884585] [2024-11-13 14:16:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039884585] [2024-11-13 14:16:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039884585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:16,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946183261] [2024-11-13 14:16:16,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:16,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:16,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:16,116 INFO L87 Difference]: Start difference. First operand 1479 states and 2479 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:16,177 INFO L93 Difference]: Finished difference Result 2771 states and 4329 transitions. [2024-11-13 14:16:16,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:16,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-11-13 14:16:16,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:16,186 INFO L225 Difference]: With dead ends: 2771 [2024-11-13 14:16:16,186 INFO L226 Difference]: Without dead ends: 2077 [2024-11-13 14:16:16,188 INFO L431 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 [2024-11-13 14:16:16,189 INFO L432 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:16,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-13 14:16:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2075. [2024-11-13 14:16:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2073 states have (on average 1.5894838398456343) internal successors, (3295), 2074 states have internal predecessors, (3295), 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) [2024-11-13 14:16:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3295 transitions. [2024-11-13 14:16:16,276 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3295 transitions. Word has length 48 [2024-11-13 14:16:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:16,276 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3295 transitions. [2024-11-13 14:16:16,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3295 transitions. [2024-11-13 14:16:16,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:16:16,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:16,278 INFO L215 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] [2024-11-13 14:16:16,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:16:16,278 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:16,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash -480029004, now seen corresponding path program 1 times [2024-11-13 14:16:16,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:16,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933534706] [2024-11-13 14:16:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:16,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933534706] [2024-11-13 14:16:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933534706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:16,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:16,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663898134] [2024-11-13 14:16:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:16,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:16:16,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:16:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:16:16,566 INFO L87 Difference]: Start difference. First operand 2075 states and 3295 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:27,026 INFO L93 Difference]: Finished difference Result 4330 states and 7604 transitions. [2024-11-13 14:16:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:16:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2024-11-13 14:16:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:27,043 INFO L225 Difference]: With dead ends: 4330 [2024-11-13 14:16:27,043 INFO L226 Difference]: Without dead ends: 3577 [2024-11-13 14:16:27,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:16:27,046 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 2389 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:27,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 779 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2024-11-13 14:16:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2024-11-13 14:16:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3577. [2024-11-13 14:16:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3575 states have (on average 1.513006993006993) internal successors, (5409), 3576 states have internal predecessors, (5409), 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) [2024-11-13 14:16:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5409 transitions. [2024-11-13 14:16:27,178 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5409 transitions. Word has length 48 [2024-11-13 14:16:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:27,178 INFO L471 AbstractCegarLoop]: Abstraction has 3577 states and 5409 transitions. [2024-11-13 14:16:27,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2024-11-13 14:16:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5409 transitions. [2024-11-13 14:16:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:16:27,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:27,180 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:27,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:16:27,181 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:27,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:27,182 INFO L85 PathProgramCache]: Analyzing trace with hash 671339203, now seen corresponding path program 1 times [2024-11-13 14:16:27,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:27,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618830330] [2024-11-13 14:16:27,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:27,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:16:27,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:27,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618830330] [2024-11-13 14:16:27,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618830330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:27,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:27,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:16:27,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209937315] [2024-11-13 14:16:27,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:27,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:16:27,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:16:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:16:27,399 INFO L87 Difference]: Start difference. First operand 3577 states and 5409 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2024-11-13 14:16:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:27,703 INFO L93 Difference]: Finished difference Result 8667 states and 12598 transitions. [2024-11-13 14:16:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:16:27,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 65 [2024-11-13 14:16:27,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:27,735 INFO L225 Difference]: With dead ends: 8667 [2024-11-13 14:16:27,735 INFO L226 Difference]: Without dead ends: 7737 [2024-11-13 14:16:27,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:16:27,740 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4645 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:27,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 3320 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2024-11-13 14:16:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 4689. [2024-11-13 14:16:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4687 states have (on average 1.4851717516535097) internal successors, (6961), 4688 states have internal predecessors, (6961), 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) [2024-11-13 14:16:27,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6961 transitions. [2024-11-13 14:16:27,960 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6961 transitions. Word has length 65 [2024-11-13 14:16:27,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:27,960 INFO L471 AbstractCegarLoop]: Abstraction has 4689 states and 6961 transitions. [2024-11-13 14:16:27,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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) [2024-11-13 14:16:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6961 transitions. [2024-11-13 14:16:27,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:16:27,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:27,966 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:27,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:16:27,966 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:27,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:27,967 INFO L85 PathProgramCache]: Analyzing trace with hash -305867581, now seen corresponding path program 1 times [2024-11-13 14:16:27,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:27,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554175683] [2024-11-13 14:16:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:27,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:16:28,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:28,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554175683] [2024-11-13 14:16:28,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554175683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:28,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:28,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:16:28,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639161764] [2024-11-13 14:16:28,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:28,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:16:28,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:28,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:16:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:16:28,160 INFO L87 Difference]: Start difference. First operand 4689 states and 6961 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2024-11-13 14:16:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:28,479 INFO L93 Difference]: Finished difference Result 9955 states and 14406 transitions. [2024-11-13 14:16:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:16:28,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 65 [2024-11-13 14:16:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:28,510 INFO L225 Difference]: With dead ends: 9955 [2024-11-13 14:16:28,510 INFO L226 Difference]: Without dead ends: 8665 [2024-11-13 14:16:28,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:16:28,515 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4683 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:28,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4683 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8665 states. [2024-11-13 14:16:28,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8665 to 6441. [2024-11-13 14:16:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6439 states have (on average 1.4600093182171145) internal successors, (9401), 6440 states have internal predecessors, (9401), 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) [2024-11-13 14:16:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 9401 transitions. [2024-11-13 14:16:28,877 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 9401 transitions. Word has length 65 [2024-11-13 14:16:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:28,878 INFO L471 AbstractCegarLoop]: Abstraction has 6441 states and 9401 transitions. [2024-11-13 14:16:28,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2024-11-13 14:16:28,879 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 9401 transitions. [2024-11-13 14:16:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:16:28,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:28,881 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:28,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:16:28,882 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:28,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1475065283, now seen corresponding path program 1 times [2024-11-13 14:16:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303154509] [2024-11-13 14:16:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:16:29,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:29,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303154509] [2024-11-13 14:16:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303154509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:29,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:16:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179887590] [2024-11-13 14:16:29,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:29,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:16:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:16:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:16:29,056 INFO L87 Difference]: Start difference. First operand 6441 states and 9401 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-13 14:16:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:29,369 INFO L93 Difference]: Finished difference Result 11243 states and 16206 transitions. [2024-11-13 14:16:29,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:16:29,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 65 [2024-11-13 14:16:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:29,394 INFO L225 Difference]: With dead ends: 11243 [2024-11-13 14:16:29,394 INFO L226 Difference]: Without dead ends: 9953 [2024-11-13 14:16:29,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:16:29,399 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 4679 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:29,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4679 Valid, 3329 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2024-11-13 14:16:29,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 7729. [2024-11-13 14:16:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7729 states, 7727 states have (on average 1.4495923385531253) internal successors, (11201), 7728 states have internal predecessors, (11201), 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) [2024-11-13 14:16:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 11201 transitions. [2024-11-13 14:16:29,681 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 11201 transitions. Word has length 65 [2024-11-13 14:16:29,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:29,682 INFO L471 AbstractCegarLoop]: Abstraction has 7729 states and 11201 transitions. [2024-11-13 14:16:29,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2024-11-13 14:16:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 11201 transitions. [2024-11-13 14:16:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 14:16:29,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:29,684 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:29,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:16:29,684 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:29,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1909601219, now seen corresponding path program 1 times [2024-11-13 14:16:29,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:29,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113623393] [2024-11-13 14:16:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:29,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:16:29,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:29,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113623393] [2024-11-13 14:16:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113623393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:16:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031868780] [2024-11-13 14:16:29,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:29,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:16:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:16:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:16:29,854 INFO L87 Difference]: Start difference. First operand 7729 states and 11201 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-13 14:16:30,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:30,176 INFO L93 Difference]: Finished difference Result 12531 states and 18006 transitions. [2024-11-13 14:16:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:16:30,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 65 [2024-11-13 14:16:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:30,206 INFO L225 Difference]: With dead ends: 12531 [2024-11-13 14:16:30,206 INFO L226 Difference]: Without dead ends: 11241 [2024-11-13 14:16:30,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:16:30,212 INFO L432 NwaCegarLoop]: 1573 mSDtfsCounter, 4649 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:30,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4649 Valid, 3364 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2024-11-13 14:16:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 9017. [2024-11-13 14:16:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4421519689406546) internal successors, (13001), 9016 states have internal predecessors, (13001), 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) [2024-11-13 14:16:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 13001 transitions. [2024-11-13 14:16:30,622 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 13001 transitions. Word has length 65 [2024-11-13 14:16:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:30,622 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 13001 transitions. [2024-11-13 14:16:30,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-11-13 14:16:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 13001 transitions. [2024-11-13 14:16:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-13 14:16:30,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:30,625 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:30,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:16:30,625 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:30,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:30,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1137070396, now seen corresponding path program 1 times [2024-11-13 14:16:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:30,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956923981] [2024-11-13 14:16:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:30,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956923981] [2024-11-13 14:16:30,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956923981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:30,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:30,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:30,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682113054] [2024-11-13 14:16:30,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:30,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:30,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:30,794 INFO L87 Difference]: Start difference. First operand 9017 states and 13001 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) [2024-11-13 14:16:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:31,013 INFO L93 Difference]: Finished difference Result 15749 states and 22419 transitions. [2024-11-13 14:16:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:31,013 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 [2024-11-13 14:16:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:31,037 INFO L225 Difference]: With dead ends: 15749 [2024-11-13 14:16:31,038 INFO L226 Difference]: Without dead ends: 9019 [2024-11-13 14:16:31,047 INFO L431 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 [2024-11-13 14:16:31,048 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:31,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:31,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9019 states. [2024-11-13 14:16:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9019 to 9017. [2024-11-13 14:16:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4283971159179145) internal successors, (12877), 9016 states have internal predecessors, (12877), 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) [2024-11-13 14:16:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12877 transitions. [2024-11-13 14:16:31,357 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12877 transitions. Word has length 66 [2024-11-13 14:16:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:31,357 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 12877 transitions. [2024-11-13 14:16:31,357 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) [2024-11-13 14:16:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12877 transitions. [2024-11-13 14:16:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 14:16:31,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:31,359 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:31,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:16:31,360 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:31,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:31,362 INFO L85 PathProgramCache]: Analyzing trace with hash -173469605, now seen corresponding path program 1 times [2024-11-13 14:16:31,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:31,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341458821] [2024-11-13 14:16:31,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:31,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:31,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:31,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341458821] [2024-11-13 14:16:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341458821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:31,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:31,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:31,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587980767] [2024-11-13 14:16:31,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:31,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:31,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:31,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:31,517 INFO L87 Difference]: Start difference. First operand 9017 states and 12877 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-13 14:16:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:31,618 INFO L93 Difference]: Finished difference Result 11590 states and 16461 transitions. [2024-11-13 14:16:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2024-11-13 14:16:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:31,630 INFO L225 Difference]: With dead ends: 11590 [2024-11-13 14:16:31,631 INFO L226 Difference]: Without dead ends: 4860 [2024-11-13 14:16:31,638 INFO L431 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 [2024-11-13 14:16:31,640 INFO L432 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:31,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:31,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2024-11-13 14:16:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4852. [2024-11-13 14:16:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4850 states have (on average 1.4672164948453608) internal successors, (7116), 4851 states have internal predecessors, (7116), 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) [2024-11-13 14:16:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 7116 transitions. [2024-11-13 14:16:31,821 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 7116 transitions. Word has length 67 [2024-11-13 14:16:31,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:31,822 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 7116 transitions. [2024-11-13 14:16:31,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-13 14:16:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 7116 transitions. [2024-11-13 14:16:31,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:16:31,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:31,824 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:31,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:16:31,824 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:31,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:31,825 INFO L85 PathProgramCache]: Analyzing trace with hash 997622798, now seen corresponding path program 1 times [2024-11-13 14:16:31,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:31,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354312001] [2024-11-13 14:16:31,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:31,972 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:31,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:31,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354312001] [2024-11-13 14:16:31,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354312001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:31,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:31,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:31,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130576932] [2024-11-13 14:16:31,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:31,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:31,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:31,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:31,974 INFO L87 Difference]: Start difference. First operand 4852 states and 7116 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) [2024-11-13 14:16:32,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:32,043 INFO L93 Difference]: Finished difference Result 6132 states and 8878 transitions. [2024-11-13 14:16:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:32,043 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 [2024-11-13 14:16:32,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:32,052 INFO L225 Difference]: With dead ends: 6132 [2024-11-13 14:16:32,053 INFO L226 Difference]: Without dead ends: 3578 [2024-11-13 14:16:32,057 INFO L431 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 [2024-11-13 14:16:32,058 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:32,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:32,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2024-11-13 14:16:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3576. [2024-11-13 14:16:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3574 states have (on average 1.4924454392837156) internal successors, (5334), 3575 states have internal predecessors, (5334), 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) [2024-11-13 14:16:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 5334 transitions. [2024-11-13 14:16:32,144 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 5334 transitions. Word has length 68 [2024-11-13 14:16:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:32,145 INFO L471 AbstractCegarLoop]: Abstraction has 3576 states and 5334 transitions. [2024-11-13 14:16:32,145 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) [2024-11-13 14:16:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 5334 transitions. [2024-11-13 14:16:32,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-13 14:16:32,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:32,147 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:32,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:16:32,147 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:32,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -812710560, now seen corresponding path program 1 times [2024-11-13 14:16:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:32,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474767526] [2024-11-13 14:16:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474767526] [2024-11-13 14:16:32,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474767526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:32,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:32,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898152992] [2024-11-13 14:16:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:32,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:32,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:32,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:32,290 INFO L87 Difference]: Start difference. First operand 3576 states and 5334 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) [2024-11-13 14:16:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:32,339 INFO L93 Difference]: Finished difference Result 4218 states and 6205 transitions. [2024-11-13 14:16:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:32,340 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 [2024-11-13 14:16:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:32,348 INFO L225 Difference]: With dead ends: 4218 [2024-11-13 14:16:32,348 INFO L226 Difference]: Without dead ends: 2940 [2024-11-13 14:16:32,350 INFO L431 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 [2024-11-13 14:16:32,351 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:32,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:16:32,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2024-11-13 14:16:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2024-11-13 14:16:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.5170299727520435) internal successors, (4454), 2937 states have internal predecessors, (4454), 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) [2024-11-13 14:16:32,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4454 transitions. [2024-11-13 14:16:32,416 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4454 transitions. Word has length 70 [2024-11-13 14:16:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:32,417 INFO L471 AbstractCegarLoop]: Abstraction has 2938 states and 4454 transitions. [2024-11-13 14:16:32,417 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) [2024-11-13 14:16:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4454 transitions. [2024-11-13 14:16:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 14:16:32,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:32,418 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:32,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:16:32,419 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:32,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:32,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1281946930, now seen corresponding path program 1 times [2024-11-13 14:16:32,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658777236] [2024-11-13 14:16:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:32,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658777236] [2024-11-13 14:16:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658777236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288733361] [2024-11-13 14:16:34,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:34,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:34,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:16:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:35,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:16:35,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:35,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:36,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288733361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:36,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:36,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-11-13 14:16:36,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506831510] [2024-11-13 14:16:36,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:36,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:16:36,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:36,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:16:36,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:16:36,216 INFO L87 Difference]: Start difference. First operand 2938 states and 4454 transitions. Second operand has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 states have internal predecessors, (203), 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) [2024-11-13 14:16:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:45,053 INFO L93 Difference]: Finished difference Result 8619 states and 11895 transitions. [2024-11-13 14:16:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-13 14:16:45,054 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 states have internal predecessors, (203), 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 [2024-11-13 14:16:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:45,075 INFO L225 Difference]: With dead ends: 8619 [2024-11-13 14:16:45,075 INFO L226 Difference]: Without dead ends: 7905 [2024-11-13 14:16:45,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4128 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1855, Invalid=9487, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 14:16:45,082 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 18087 mSDsluCounter, 7939 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18087 SdHoareTripleChecker+Valid, 9458 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:45,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18087 Valid, 9458 Invalid, 1784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 14:16:45,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2024-11-13 14:16:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 7233. [2024-11-13 14:16:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 7231 states have (on average 1.3807218918545152) internal successors, (9984), 7232 states have internal predecessors, (9984), 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) [2024-11-13 14:16:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9984 transitions. [2024-11-13 14:16:45,392 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9984 transitions. Word has length 72 [2024-11-13 14:16:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:45,392 INFO L471 AbstractCegarLoop]: Abstraction has 7233 states and 9984 transitions. [2024-11-13 14:16:45,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 states have internal predecessors, (203), 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) [2024-11-13 14:16:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9984 transitions. [2024-11-13 14:16:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 14:16:45,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:45,396 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:45,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:16:45,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:45,600 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:45,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:45,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1524579735, now seen corresponding path program 1 times [2024-11-13 14:16:45,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:45,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454830522] [2024-11-13 14:16:45,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:45,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:48,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:48,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454830522] [2024-11-13 14:16:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454830522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452576790] [2024-11-13 14:16:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:48,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:48,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:48,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:48,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:16:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:48,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:16:48,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:49,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452576790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:50,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-11-13 14:16:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135426188] [2024-11-13 14:16:50,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:50,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:16:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:16:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:16:50,887 INFO L87 Difference]: Start difference. First operand 7233 states and 9984 transitions. Second operand has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 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) [2024-11-13 14:16:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:52,456 INFO L93 Difference]: Finished difference Result 17341 states and 23136 transitions. [2024-11-13 14:16:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:16:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 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 [2024-11-13 14:16:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:52,484 INFO L225 Difference]: With dead ends: 17341 [2024-11-13 14:16:52,484 INFO L226 Difference]: Without dead ends: 12525 [2024-11-13 14:16:52,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 14:16:52,491 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 11910 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11910 SdHoareTripleChecker+Valid, 6437 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:52,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11910 Valid, 6437 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:16:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2024-11-13 14:16:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 12373. [2024-11-13 14:16:52,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12373 states, 12371 states have (on average 1.3302077439172257) internal successors, (16456), 12372 states have internal predecessors, (16456), 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) [2024-11-13 14:16:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12373 states to 12373 states and 16456 transitions. [2024-11-13 14:16:52,994 INFO L78 Accepts]: Start accepts. Automaton has 12373 states and 16456 transitions. Word has length 73 [2024-11-13 14:16:52,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:52,996 INFO L471 AbstractCegarLoop]: Abstraction has 12373 states and 16456 transitions. [2024-11-13 14:16:52,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 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) [2024-11-13 14:16:52,997 INFO L276 IsEmpty]: Start isEmpty. Operand 12373 states and 16456 transitions. [2024-11-13 14:16:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 14:16:52,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:52,998 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:16:53,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:16:53,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 14:16:53,199 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:53,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1289280617, now seen corresponding path program 1 times [2024-11-13 14:16:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402638017] [2024-11-13 14:16:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:53,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:53,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:53,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402638017] [2024-11-13 14:16:53,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402638017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:53,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903604593] [2024-11-13 14:16:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:53,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:53,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:53,841 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:53,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:16:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:54,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:16:54,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:54,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903604593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:55,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:55,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-11-13 14:16:55,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566175301] [2024-11-13 14:16:55,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:55,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:16:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:55,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:16:55,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:16:55,760 INFO L87 Difference]: Start difference. First operand 12373 states and 16456 transitions. Second operand has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 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) [2024-11-13 14:16:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:58,762 INFO L93 Difference]: Finished difference Result 51903 states and 67371 transitions. [2024-11-13 14:16:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 14:16:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 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 [2024-11-13 14:16:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:58,834 INFO L225 Difference]: With dead ends: 51903 [2024-11-13 14:16:58,834 INFO L226 Difference]: Without dead ends: 41883 [2024-11-13 14:16:58,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=580, Invalid=2176, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 14:16:58,853 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 23196 mSDsluCounter, 6726 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23196 SdHoareTripleChecker+Valid, 8247 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:58,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23196 Valid, 8247 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:16:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41883 states. [2024-11-13 14:17:01,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41883 to 41327. [2024-11-13 14:17:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41327 states, 41325 states have (on average 1.2727162734422262) internal successors, (52595), 41326 states have internal predecessors, (52595), 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) [2024-11-13 14:17:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41327 states to 41327 states and 52595 transitions. [2024-11-13 14:17:01,227 INFO L78 Accepts]: Start accepts. Automaton has 41327 states and 52595 transitions. Word has length 73 [2024-11-13 14:17:01,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:01,227 INFO L471 AbstractCegarLoop]: Abstraction has 41327 states and 52595 transitions. [2024-11-13 14:17:01,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 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) [2024-11-13 14:17:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 41327 states and 52595 transitions. [2024-11-13 14:17:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 14:17:01,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:01,230 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:17:01,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:17:01,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 14:17:01,431 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:01,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1581616100, now seen corresponding path program 1 times [2024-11-13 14:17:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:01,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296224224] [2024-11-13 14:17:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296224224] [2024-11-13 14:17:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296224224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:17:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670120496] [2024-11-13 14:17:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:01,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:01,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:01,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:17:01,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:17:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:01,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:17:01,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:17:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:02,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:17:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:04,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670120496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:17:04,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:17:04,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-11-13 14:17:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938424989] [2024-11-13 14:17:04,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:17:04,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 14:17:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 14:17:04,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:17:04,265 INFO L87 Difference]: Start difference. First operand 41327 states and 52595 transitions. Second operand has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 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) [2024-11-13 14:17:06,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:06,662 INFO L93 Difference]: Finished difference Result 80201 states and 101767 transitions. [2024-11-13 14:17:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:17:06,663 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 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 [2024-11-13 14:17:06,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:06,743 INFO L225 Difference]: With dead ends: 80201 [2024-11-13 14:17:06,743 INFO L226 Difference]: Without dead ends: 43011 [2024-11-13 14:17:06,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 14:17:06,776 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 17886 mSDsluCounter, 7893 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17886 SdHoareTripleChecker+Valid, 9406 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:06,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17886 Valid, 9406 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:17:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43011 states. [2024-11-13 14:17:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43011 to 40527. [2024-11-13 14:17:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40527 states, 40525 states have (on average 1.2622085132634175) internal successors, (51151), 40526 states have internal predecessors, (51151), 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) [2024-11-13 14:17:09,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40527 states to 40527 states and 51151 transitions. [2024-11-13 14:17:09,080 INFO L78 Accepts]: Start accepts. Automaton has 40527 states and 51151 transitions. Word has length 74 [2024-11-13 14:17:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:09,081 INFO L471 AbstractCegarLoop]: Abstraction has 40527 states and 51151 transitions. [2024-11-13 14:17:09,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 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) [2024-11-13 14:17:09,081 INFO L276 IsEmpty]: Start isEmpty. Operand 40527 states and 51151 transitions. [2024-11-13 14:17:09,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 14:17:09,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:09,084 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:17:09,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:17:09,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:09,288 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:09,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:09,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1672030297, now seen corresponding path program 1 times [2024-11-13 14:17:09,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:09,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94353248] [2024-11-13 14:17:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:09,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:09,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:10,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:10,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94353248] [2024-11-13 14:17:10,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94353248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:17:10,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590090546] [2024-11-13 14:17:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:10,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:10,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:17:10,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:17:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:10,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:17:10,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:17:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:15,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:17:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:17,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590090546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:17:17,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:17:17,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 41 [2024-11-13 14:17:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092803497] [2024-11-13 14:17:17,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:17:17,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 14:17:17,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:17,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 14:17:17,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:17:17,246 INFO L87 Difference]: Start difference. First operand 40527 states and 51151 transitions. Second operand has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 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) [2024-11-13 14:17:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:21,544 INFO L93 Difference]: Finished difference Result 58423 states and 73339 transitions. [2024-11-13 14:17:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 14:17:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 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 [2024-11-13 14:17:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:21,599 INFO L225 Difference]: With dead ends: 58423 [2024-11-13 14:17:21,599 INFO L226 Difference]: Without dead ends: 44957 [2024-11-13 14:17:21,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=819, Invalid=3213, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 14:17:21,612 INFO L432 NwaCegarLoop]: 1500 mSDtfsCounter, 12399 mSDsluCounter, 26663 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12399 SdHoareTripleChecker+Valid, 28163 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:21,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12399 Valid, 28163 Invalid, 922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:17:21,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44957 states. [2024-11-13 14:17:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44957 to 37487. [2024-11-13 14:17:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37487 states, 37485 states have (on average 1.2611711351207149) internal successors, (47275), 37486 states have internal predecessors, (47275), 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) [2024-11-13 14:17:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37487 states to 37487 states and 47275 transitions. [2024-11-13 14:17:24,047 INFO L78 Accepts]: Start accepts. Automaton has 37487 states and 47275 transitions. Word has length 75 [2024-11-13 14:17:24,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:24,047 INFO L471 AbstractCegarLoop]: Abstraction has 37487 states and 47275 transitions. [2024-11-13 14:17:24,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 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) [2024-11-13 14:17:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 37487 states and 47275 transitions. [2024-11-13 14:17:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 14:17:24,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:24,050 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:17:24,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:17:24,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:17:24,251 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:24,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:24,251 INFO L85 PathProgramCache]: Analyzing trace with hash 868693635, now seen corresponding path program 1 times [2024-11-13 14:17:24,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:24,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702094714] [2024-11-13 14:17:24,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:24,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:25,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702094714] [2024-11-13 14:17:25,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702094714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:17:25,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272898545] [2024-11-13 14:17:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:25,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:25,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:25,326 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:17:25,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:17:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:25,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:17:25,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:17:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:26,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:17:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:28,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272898545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:17:28,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:17:28,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-11-13 14:17:28,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114226085] [2024-11-13 14:17:28,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:17:28,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 14:17:28,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:28,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 14:17:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:17:28,170 INFO L87 Difference]: Start difference. First operand 37487 states and 47275 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 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) [2024-11-13 14:17:45,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:45,537 INFO L93 Difference]: Finished difference Result 104939 states and 131614 transitions. [2024-11-13 14:17:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-13 14:17:45,538 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 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 [2024-11-13 14:17:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:45,618 INFO L225 Difference]: With dead ends: 104939 [2024-11-13 14:17:45,618 INFO L226 Difference]: Without dead ends: 84365 [2024-11-13 14:17:45,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8651 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=4417, Invalid=19453, Unknown=0, NotChecked=0, Total=23870 [2024-11-13 14:17:45,641 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 18815 mSDsluCounter, 22774 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18815 SdHoareTripleChecker+Valid, 24284 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:45,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18815 Valid, 24284 Invalid, 1887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 14:17:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84365 states. [2024-11-13 14:17:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84365 to 30057. [2024-11-13 14:17:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30057 states, 30055 states have (on average 1.2636832473798036) internal successors, (37980), 30056 states have internal predecessors, (37980), 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) [2024-11-13 14:17:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30057 states to 30057 states and 37980 transitions. [2024-11-13 14:17:47,446 INFO L78 Accepts]: Start accepts. Automaton has 30057 states and 37980 transitions. Word has length 75 [2024-11-13 14:17:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:47,446 INFO L471 AbstractCegarLoop]: Abstraction has 30057 states and 37980 transitions. [2024-11-13 14:17:47,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 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) [2024-11-13 14:17:47,447 INFO L276 IsEmpty]: Start isEmpty. Operand 30057 states and 37980 transitions. [2024-11-13 14:17:47,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:17:47,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:47,448 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-13 14:17:47,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:17:47,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 14:17:47,650 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:47,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash 824756126, now seen corresponding path program 1 times [2024-11-13 14:17:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936061811] [2024-11-13 14:17:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936061811] [2024-11-13 14:17:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936061811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:17:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339370006] [2024-11-13 14:17:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:50,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:50,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:17:50,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888536d1-9d5e-4282-956c-a5c9db65ecd3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:17:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:50,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 14:17:50,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:17:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:56,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:18:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:18:04,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339370006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:18:04,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:18:04,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 21] total 72 [2024-11-13 14:18:04,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270050133] [2024-11-13 14:18:04,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:18:04,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-13 14:18:04,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:04,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-13 14:18:04,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=4495, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 14:18:04,562 INFO L87 Difference]: Start difference. First operand 30057 states and 37980 transitions. Second operand has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 states have internal predecessors, (210), 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)